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Artifact removal or suppression (e.g., distortion correction)

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382 - Image analysis

382254000 - IMAGE ENHANCEMENT OR RESTORATION

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DocumentTitleDate
20080279474Punched hole detection and removal - A method for removal of punched hole artifacts in digital images includes, for a scanned document page, deriving an original digital image that defines the page in terms of a plurality of input pixels. A reduced resolution bitonal image is generated from the original image. The method further includes providing for identifying of candidate punched hole artifacts in the reduced resolution bitonal image and providing for testing the candidate punched hole artifacts for at least one of shape, size, and location. Where a candidate punched hole artifact meets the at least one test, the method includes generating a modified image. This includes erasing the candidate punched hole artifact from the original digital image.11-13-2008
20080317378DIGITAL IMAGE ENHANCEMENT WITH REFERENCE IMAGES - A digital image processing technique is for detecting and correcting visual imperfections using a reference image. A main image and one or more reference images having a temporal and/or spatial overlap and/or proximity with the original image are captured. Device information, image data and/or meta data are analyzed of the one or more reference images relating to a defect in the main image. The device corrects the defect based on the information, image data and/or meta-data to create an enhanced version of the main image.12-25-2008
20130028536METHODS FOR REDUCING MOTION ARTIFACTS IN SHEAR WAVE IMAGES - Methods and non-transitory computer readable media that store executable instructions to perform a method for reducing motion artifacts in shear wave measurements are presented. Accordingly, reference pulses are delivered to a common motion tracking location (CMTL) and a plurality of target locations in a region of interest (ROI) to detect corresponding initial positions. Further, a shear wave is generated and tracked in the ROI using tracking pulses delivered to the CMTL and the plurality of target locations for determining corresponding displacements. Additionally, an average displacement of the CMTL is computed. Further, a motion corrected displacement for a target location in the plurality of target locations is estimated based on a displacement of the target location at a particular time, a corresponding displacement of the CMTL measured proximate in time to the measurement of the displacement of the target location and the average displacement of the CMTL.01-31-2013
20130028537IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER PROGRAM - An image processing apparatus, an image processing method, and a computer program, visually remove low-frequency noise contained in image data. Image data containing low-frequency noise is input from an input terminal. A window unit designates a window made up of a pixel of interest, and its surrounding pixels. A pixel selector selects a selected pixel to be compared with the pixel of interest from the window, and a pixel value determination unit determines a new pixel value of the pixel of interest on the basis of the pixel values of the selected pixel and pixel of interest. New image data is generated by substituting the pixel value of the pixel of interest by the new pixel value.01-31-2013
20090190856DISTORTION CORRECTING APPARATUS - A distortion correcting apparatus includes a buffer circuit which writes image data having horizontal pixels of a first number and a vertical-distortion different depending on a horizontal pixel position, into an SDRAM. The written image data is read-out for each units of horizontal pixels, which include a reference horizontal pixel and indicates a second number smaller than the first number, in a vertical pixel direction. A buffer control circuit in the vertical-distortion correcting circuit determines a second number in such a manner as to indicate a larger numerical value as a vertical-distortion corresponding to the reference horizontal pixel is smaller so as to start the buffer circuit. Also, the buffer control circuit changes a position of the reference horizontal pixel to a position corresponding to the second number at a timing based on a correction amount of the vertical-distortion correcting circuit so as to start the above-described determining process.07-30-2009
20100074554IMAGE PROCESSING APPARATUS, CONTROL METHOD THEREFOR, AND PROGRAM - An image processing apparatus which corrects input image data based on the image data and foreign substance information containing information on the position and size of a foreign substance includes a correction unit which corrects the influence of the shadow of the foreign substance contained in the image data, based on the image data and the foreign substance information, a still image uniformity determination unit which determines the uniformity of an image in a region around the foreign substance, a moving image uniformity determination unit which determines the uniformity of the image in the region around the foreign substance based on a determination criterion different from one applied to a still image, and a control unit which inhibits correction of the image data when the still image uniformity determination unit or moving image uniformity determination unit determines that the uniformity is less than or equal to a predetermined value.03-25-2010
20130077890Metadata-Driven Method and Apparatus for Constraining Solution Space in Image Processing Techniques - Methods and apparatus for constraining solution space in image processing techniques may use the metadata for a set of images to constrain an image processing solution to a smaller solution space. In one embodiment, a process may require N parameters for processing an image. A determination may be made from metadata that multiple images were captured with the same camera/lens and with the same settings. A set of values may be estimated for the N parameters from data in one or more of the images. The process may then be applied to each of images using the set of values. In one embodiment, a value for a parameter of a process may be estimated for an image. If the estimated value deviates substantially from a value for the parameter in the metadata, the metadata value is used in the process instead of the estimated value.03-28-2013
20130077889IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing apparatus includes a processing unit configured to generate a processed image by processing a plurality of band limit signals based on a parameter for adjusting the band limit signal, and a control unit configured to control the parameter so that an amplitude response of the processed image with respect to an original image is to be a predetermined value or more.03-28-2013
20130034311Denoising and Artifact Removal in Image Upscaling - Methods and systems for denoising and artifact removal in image upscaling are disclosed. In one embodiment, a low frequency band image intermediate is obtained from an input image. An upsampled image intermediate is obtained from the input image by upsampling. A result image is estimated, based at least in part on the upsampled image intermediate, the low frequency band image intermediate, and the input image. The input image is of a smaller scale than the result image. The estimating the result image further includes eliminating from the result image noise that is present in the input image.02-07-2013
20090268981SPATIAL ACTIVITY METRIC AND METHOD FOR EVALUATING THE SAME - A spatial activity metric for characterizing an image is established, typically based one of the image variance, image gradient or DCT coefficients. The spatial activity metric is then reduced by the amount of the estimated noise in the image so that upon the spatial activity metric in connection with spatial masking, the likelihood of unmasked distortion caused by the presence of noise, such as film grain will be reduced. The effectiveness of such a spatial activity metric can be determined by determining similarity of the measures made by the spatial activity metric for regions in the image of similar texture and by determining the difference in the measures made by the spatial activity metric for regions of different texture in the image.10-29-2009
20100046854IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND COMPUTER READABLE MEDIUM - An image processing device includes, a pixel information output section that reads an image along a predetermined direction and outputs saturation information and lightness information, a dust pixel extraction section that extracts dust pixels that are candidates for pixels expressing dust existing in the predetermined direction, a lightness-changed pixel extraction section that extracts lightness-changed pixels, a correction object pixel extraction section that, from among the dust pixels extracted by the dust pixel extraction section, extracts, as pixels that are objects of correction, dust pixels that have not been extracted as lightness-changed pixels and dust pixels in whose vicinities lightness-changed pixels do not exist, a correction section that corrects both of the information of the pixels, using both of the information of neighboring pixels of the pixels, and an image information output section that outputs image information that includes information expressing pixels corrected by the correction section.02-25-2010
20130039598CORRECTING PAGE CURL IN SCANNED BOOKS - A computer implemented method for correcting distortion in an image of a page includes identifying a set of high quality (HQ) words in undistorted regions of one or more images of pages having content related to the content of the page. At least one distorted word in the image the page is identified such that each distorted word corresponds to a high quality word of the set. A global transformation function is generated for application to the image of the page so as to transform the distorted word into its corresponding high quality word. The global transformation function is applied to pixels of the image of the page.02-14-2013
20130039597Comfort Noise and Film Grain Processing for 3 Dimensional Video - Noise, either in the form of comfort noise or film grain, is added to a three dimensional image in accordance with image depth information to reduce human sensitivity to coding artifacts, thereby improving subjective image quality.02-14-2013
20100111442Display method and display device for displaying a design image and a pickup image in a superimposing manner, and storage medium storing a program for executing the display method - Provided is a display method used for a display device that displays a design image and a pickup image in a superimposing manner, including: a distortion correction process of correcting distortion of the pickup image; an alignment process of aligning a position of the design image and a position of the pickup image; and a display process of displaying the design image and the pickup image in the superimposing manner. In the distortion correction process, the distortion of the pickup image is corrected so that a quadrangle formed by connecting four points on the pickup image becomes a rectangle in parallel with a vertical axis and a horizontal axis, the four points specified on the pickup image corresponding to four points on the design image which are connected to form a rectangle in parallel with the vertical axis and the horizontal axis. In the alignment process, the position of the design image is aligned with the position of the pickup image by carrying out at least one of right-left reversal, top-bottom reversal, shift, rotation, enlargement, and reduction, with respect to at least one of the design image and the pickup image.05-06-2010
20130084026IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - This invention provides an image processing apparatus including a unit which generates index image data, a unit which obtains a position of thumbnail image data in the index image data, a unit which divides the index image data so as to prevent overlap of the thumbnail image data, a unit which calculates a histogram of a luminance value of image data corresponding to each partial area including the thumbnail image data, a unit which determines image correction characteristics of each piece of image data based on the histogram and performing image correction, and a unit which reconfiguring the index image data using the corrected image data to output the reconfigured index image data.04-04-2013
20100092104Process, apparatus and computer program for enhancing detail visibility in an input - In the technical field of video cameras gamma correction is an often used technique to compensate the non-linear effects of the CRT (cathode ray tube), in order to enhance visibility in images to be displayed. Gamma correction is—by way of example—expressed by the gamma function: A process for enhancing detail visibility in an input image comprising a step of applying a first transfer function (04-15-2010
20130089272IMAGE PROCESSING METHOD - An image processing method includes a step of extracting an inner circle and an outer circle from an annular image, a step of obtaining the center for the extracted inner circle and the extracted outer circle respectively, and a step of moving a processing center serving as a reference in the polar coordinate conversion gradually between the center of the inner circle and the center of the outer circle to convert the circular image into a panoramic development image. According thereto, when an annular image of a side wall surface of a hole imaged by an omnidirectional imaging device (04-11-2013
20090304301IMAGE PROCESSING APPARATUS, CONTROL METHOD, AND PROGRAM - An image processing apparatus includes a reading unit configured to read an image and information about a target portion recorded along with the image, a correction unit configured to correct distortion occurring in the image, and a recording control unit configured to re-record the information about the target portion which has been changed according to a distortion correction amount performed on the image by the correction unit.12-10-2009
20120219235BLOOMING FILTER FOR MULTIPLE EXPOSURE HIGH DYNAMIC RANGE IMAGE SENSORS - Multiple-exposure high dynamic range image processing may be performed that filters pixel values that are distorted by blooming from nearby saturated pixels. Pixel values that are near saturated pixels may be identified as pixels that may be affected by blooming. The contributions from those pixels may be minimized when producing a final image. Multiple-exposure images may be linearly combined to produce a final high dynamic range image. Pixel values that may be distorted by blooming may be given less weight in the linear combination.08-30-2012
20110013855IMAGE PROCESSING APPARATUS - An image processing apparatus includes a first noise removal unit which removes noise from a pixel signal when a level of the signal falls outside a range defined by first and second threshold levels, a cyclic calculation unit which makes a cyclic calculation based on weighted averaging between signals on an identical column with respect to the signal in which the noise is removed by the first noise removal unit, a column offset detection unit which detects a column offset component for each column based on the calculation result, and a second noise removal unit which performs a noise removal operation with respect to a signal on the identical column using the previously calculated cyclic calculation result when a difference between the previously calculated cyclic calculation value and the current pixel signal value falls outside a range defined by third and fourth threshold levels.01-20-2011
20090268982IMAGE PROCESSING APPARATUS AND CONTROL METHOD THEREOF - Provided herein is an image processing apparatus comprising a scanner that reads an image, in which a plurality of blocks each having a feature value are embedded, and outputs image data of the image, a block position detector that detects a position of each block, which is embedded in the image data outputted by the scanner, a block misalignment calculator that calculates a misalignment value of the position of each block based on the detected position of each block and a specification of each block which has been set in advance, and a block misalignment corrector that corrects the image data based on the misalignment value.10-29-2009
20090060380DEVICE AND METHOD FOR REDUCING VISUAL ARTIFACTS IN COLOR IMAGES - A circuit and method for reducing artifacts in decoded color video and images are disclosed. The circuit includes a buffer for receiving an input pixel in a first color-space, and a detector for determining after transformation into a second color-space, if at least one component of the transformed pixel would fall outside a predetermined range. The determination may be made by comparing components of the input pixel, to corresponding ranges in the first color-space. Upon determining that at least one component of the transformed pixel would be outside a corresponding predetermined bound in the second color-space, the detector causes the circuit to output a pixel in the first color-space, with at least one predetermined component. The output of the circuit may subsequently be converted to the second color-space by an external color-space converter and displayed onto a color display. The method reduces visible artifacts caused by clipping during color-space conversion.03-05-2009
20120224789NOISE SUPPRESSION IN LOW LIGHT IMAGES - A low light noise reduction mechanism may perform denoising prior to demosaicing, and may also use parameters determined during the denoising operation for performing demosaicing. The denoising operation may attempt to find several patches of an image that are similar to a first patch, and use a weighted average based on similarity to determine an appropriate value for denoising a raw digital image. The same weighted average and similar patches may be used for demosaicing the same image after the denoising operation.09-06-2012
20090245682METHOD FOR CORRECTING DISTORTION OF IMAGE PROJECTED BY PROJECTOR, AND PROJECTOR - A method for correcting distortion of an image projected by a projector includes: a first detection image data producing step which produces first detection image data containing marker images; a first detection image displaying step which displays a first detection image; a first image comparing step which compares the first detection image with the first detection image data; an area selecting step which selects an area having larger distortion of the detection image than distortion in other area based on the comparison; a second detection image data producing step which increases positioning density of the marker images in the selected area to produce second detection image data; a second detection image displaying step which displays the second detection image; a second image comparing step which compares the second detection image with the second detection image data; and an image correcting step which corrects the projection image.10-01-2009
20090238490PROJECTOR, ELECTRONIC APPARATUS, AND METHOD OF CONTROLLING PROJECTOR - A projector adapted to correct a keystone distortion of an image, includes a frame memory adapted to store a pre-correction image, a block data storage memory adapted to store the precorrection image by block data that composed of M pixels in a first direction and N pixels in a second direction (M, N≧2), a correction section adapted to correct the pre-correction image based on the block data stored in the block data storage memory, and a control section adapted to perform control of obtaining the pre-correction image from the frame memory by the block data, and storing the obtained pre-correction image in the block data storage memory, and the control section obtains contiguous n×N (n≧2) lines of the image from the frame memory and stores the obtained image in the block data storage memory at the beginning of the correction process.09-24-2009
20090232413Scanning images for pornography - A computer system scans image files for pornographic image content by pre-filtering image files to detect the presence in copyright data fields of stored items of copyright information deemed to indicate that the image file is one of acceptable or unacceptable. On detecting such items of copyright information, a signal is output indicating that the image file does or does not contain pornographic image content without the need to analyse the image content of the image file.09-17-2009
20090016638DEFECTIVE PIXEL DETECTOR, IMAGING DEVICE, AND DEFECTIVE PIXEL DETECTION METHOD - In a defective pixel detector 01-15-2009
20090010565Noise reduction device and method - The invention discloses a noise reduction device for adjusting gray levels of a video sequence to reduce noises. The noise reduction device of the invention includes a motion detector and a first noise reduction module. The motion detector is used for determining whether an inputted pixel is a motion pixel or a static pixel. If the pixel is a motion pixel, the first noise reduction module directly outputs the pixel without adjustment. If the pixel is a static pixel, the first noise reduction module adjusts the gray level of the pixel according to previous image frame. Because the invention only stores previous image frame, and does not utilizes multiple continuous image frames to adjust the present image frame. Therefore, the display system of the invention needs only to be installed with one buffer, and hardware resource can be further saved.01-08-2009
20090010564METHOD AND APPARATUS TO FACILITATE CREATING ANCILLARY INFORMATION REGARDING ERRORED IMAGE CONTENT - Pixels in a provided image for which the content has been provided in error are identified. This image content is processed to provide a version of the image wherein the error is at least partially concealed while also creating ancillary information regarding the errored pixel(s) and the spatial location to which such pixel(s) corresponds to thereby provide a record that describes which pixels in the image content were provided in error. An optional user-selectable option can permit displaying either of the aforementioned corrected version of the image wherein the error is at least partially concealed and a version of the image wherein the ancillary information is used to depict the errored pixel(s) such that provided-in-error pixels are readily distinguished from correctly-provided pixels.01-08-2009
20110019935Reducing Noise in an Image - A computer-implemented method for reducing noise in an image includes receiving a first image in a computer system. The first image depicts an interior of an item and is generated using a technique that provides imaging at selected depths in the item. The first image represents a first interior section having a first thickness. The method includes determining a modification for the first image using a second image of the interior. The second image represents a second interior section encompassing the first interior section and has a second thickness greater than the first thickness. The method includes storing the modification in association with the first image.01-27-2011
20090022419Method for realistic stitching image blocks of an electronically recorded multipart image - A method for realistic stitching and showing image blocks of an electronically recorded multipart image wherein relative positional offset values of the image blocks recorded with overlap are determined in a co-ordinate system in directions x and y and stored in matrix format, and the image blocks to be presented are stitched together on the basis of the stored values the method comprising: subdividing the overlaps of the individual image blocks into smaller regions with fixed relative positions; picking up at least one region most useful for the determination of the stitching; determining the offset goodness value based on the similarity of pattern of the image blocks; stitching the blocks of the image so that first the two image blocks characterised by the best offset goodness values are stitched together and the two image blocks characterised by the worst offset goodness values are stitched together last, whereas only the co-ordinates of the images figuring in a table are modified in the course of the stitching process; and distributing the errors produced by the stitching process over several image blocks.01-22-2009
20100061656NOISE REDUCTION OF AN IMAGE SIGNAL - A process for reducing noise in medical image data is disclosed. Medical image data is received and is converted into a binary image (S03-11-2010
20100046853Multi-bank TDI approach for high-sensitivity scanners - An apparatus and method for acquiring image data from a scanned, multi-bank time-delay and integrate (TDI) focal plane array (FPA) detector. Specifically a method and apparatus for warping and combining sequentially-acquired image data of a scene portion from multiple TDI detector banks into a single image having improved image quality, thereby providing improved FPA sensitivity. Also, a method and apparatus for enabling sensitivity and areal rate trade-offs in a multi-bank, scanning TDI FPA based on the number of TDI banks being used for sequential imaging of the same scene portion.02-25-2010
20090297060IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing apparatus which includes an image processing unit and a system control unit, wherein this system control unit adds information for determining an image height reference position of an image before cropping processing is performed to an image cropped by the image processing unit, and records the resultant image in an external storage device. Alternatively, information for determining an image height reference position of an image before rotation processing is performed is added to an image rotated by the image processing unit, and the resultant image is recorded in an external storage device.12-03-2009
20110299793Motion Blur Device, Method and Program - A motion blur control device uses inter-frame movement computation means to compute an inter-frame movement direction and an inter-frame movement amount from plural frame images acquired at a specific time interval. Motion blur correction means then generates a corrected frame image by correcting motion blur in a specific frame image in plural frame images based on the blur amount set within a range not exceeding the inter-frame movement amount and based on the inter-frame movement direction. Evaluation means evaluates the corrected frame image using a motion blur evaluation function. The motion blur control device controls the blur amount such that the motion blur evaluation function satisfies a specific condition.12-08-2011
20090202171Image processing method, image processing apparatus, and imaging apparatus - A magnification chromatic aberration included in image data in a color filter array captured by an imaging device is corrected by performing a coordinate transformation with respect to each pixel in the image data. A defective pixel due to the color filter array is compensated with respect to magnification-chromatic-aberration-corrected image data.08-13-2009
20090136150METHOD AND APPARATUS FOR REDUCING IMAGE ARTIFACTS BASED ON APERTURE-DRIVEN COLOR KILL WITH COLOR SATURATION ASSESSMENT - A method and apparatus for reducing false color artifacts in digital images. Aperture correction and color saturation values are determined for a portion of an image surrounding a subject pixel. A color attenuation value is determined based at least in part on the aperture correction and color saturation values. A color value of the subject pixel is adjusted by an amount based at least in part on the color attenuation value. In one exemplary embodiment, the method and apparatus operate in the YUV color space and adjust U and V values of the subject pixel proportionally to the color attenuation value.05-28-2009
20100014779METHOD AND SYSTEM FOR REDUCING ARTIFACTS IN IMAGE DETECTION - An imager captures light reflecting off an object of interest and generates two or more images of the object. A controller identifies one or more non-interpretation regions in one of the captured images and uses the non-interpretation regions to reduce a number of artifacts in a final image.01-21-2010
20090161985IMAGE EDITING APPARATUS AND CONTROL METHOD FOR THE SAME, COMPUTER PROGRAM, STORAGE MEDIA - The present invention enables dust removal to be effectively performed even when using the operation history on images containing different pictures. An image editing apparatus includes a storage unit for storing a plurality of image data to be edited and a display unit for displaying the image data to be edited, an image processing unit adapted to perform image processing on the image data to be edited, a history storage unit adapted to store information regarding the processing history of image data to be edited which have previously undergone image processing, a position obtaining unit adapted to obtain position information regarding a position at which the image processing had been applied from the processing history information, and a display controller adapted to cause a portion, to which the image processing would be applied among the images to be edited, to be displayed on a display area for images to be edited on the display unit, based on the position information.06-25-2009
20080310754System and method for assembling substantially distortion-free images - Exemplary systems and methods are provided for imaging a unit under test. Orientation of an imaging system is determined with a machine vision system, a unit under test is scanned with the imaging system, and the scanned image is processed into a substantially distortion-free image. The scanned image may be processed into a substantially distortion-free image by mapping a scanned image to coordinates determined by the machine vision system. By combining the position and orientation information collected at the time each image pixel is collected, the image can be assembled without distortion by mapping a detector signal to the appropriate image coordinate. Alternately, the scanned image may be processed into a substantially distortion-free image by mapping a scanned image to a predetermined matrix grid of coordinates, identifying distortion in the scanned image, and correcting identified distortion in the scanned image.12-18-2008
20100034482METHOD AND APPARATUS FOR PROCESSING A DIGITAL IMAGE SIGNAL, AND A RECORDING MEDIUM HAVING RECORDED THEREON A PROGRAM FOR EXECUTING THE METHOD - A method and apparatus for processing a digital image signal to correct for the effect of hand tremble in a digital photographing apparatus, such as a digital camera or video recorder. The method and apparatus perform the operations of generating original image data, dividing the original image data into at least one block and generating processed image data in which an average of the original image data is calculated according to the block, and decreasing a first contribution of the original image data or increasing a second contribution of the processed image data, as a difference of pixels or blocks between the original image data and the processed image data nears to a boundary.02-11-2010
20100054624RADIOGRAPHIC IMAGING DEVICE, IMAGE PROCESSING DEVICE - There is provided a radiographic imaging device including: a radiation detector having plural sensor portions; a receiving unit that receives request data requesting radiation irradiation permission from a control device that controls a radiation source; a control unit that controls the radiation detector such that an accumulation extraction operation is repeatedly performed that extracts charge that has accumulated in each sensor portions of the radiation detector, the accumulation extraction operation being performed after a specific accumulation period has elapsed that is greater than the irradiation period of radiation; a determination unit that determines whether or not radiation irradiation of the irradiation period from the radiation source is possible within the accumulation period of the accumulation extraction operation; and a permission unit that permits radiation irradiation if the determination unit has determined that irradiation is possible, and otherwise that permits radiographic image after starting the accumulation period of the next accumulation extraction operation.03-04-2010
20090190855Image processsing method, image processing apparatus, and imaging apparatus - A distortion included in image data is corrected by performing a coordinate transformation with respect to the image data based on07-30-2009
20100111443IMAGE PROCESSING APPARATUS AND METHOD - A broadcast display apparatus and an image processing and outputting method thereof. An image processing and outputting method includes determining whether there is noise on an edge of an original image, and performing image processing for the noise. Accordingly, undesired signals inserted on an edge of an image can be effectively removed.05-06-2010
20090310886Device and method for correcting for uneven exposure, and computer-readable recording medium containing program - A direct X-ray region extracting means extracts a direct X-ray region, which is at least a portion of a region without the subject contained therein, from an X-ray image formed by an X-ray applied from an X-ray tube to a subject; an uneven exposure component estimating means estimates an uneven exposure component at individual pixels of the X-ray image based on a relationship between positions and pixel values of at least some of pixels in the direct X-ray region; and an uneven exposure correcting means removes the estimated uneven exposure component from the X-ray image.12-17-2009
20100119174IMAGE PROCESSING APPARATUS - Provided is an image processing apparatus for performing a correction process with respect to object image data, the image processing apparatus including: a first determining unit that determines whether facial image data including a face of a person, which is extracted from the object image data, is attached to relevant object image data; a second determining unit that determines whether reduction image data of the object image data is attached to the relevant object image data; a selecting unit that selects the facial image data or the reduction image data as selection image data; a correction parameter setting unit that extracts a feature amount from the selection image data and sets a correction parameter for image correction based on the feature amount; and a correction processing unit that corrects the object image data based on the correction parameter.05-13-2010
20100142849Method and apparatus for shoot suppression in image detail enhancement - A general shoot suppression method and system for image detail enhancement that provides good suppression in shoot areas while preserving the enhancement (with less or no suppression) in non-shoot areas. Asymmetry checker checks the luminance variation of pixels around the current pixel within a filtering range. Based on the checking result, different patterns of luminance variation in the neighborhood of the current pixel are categorized. Higher suppression is applied to those patterns that are more likely to cause overshoot/undershoot. Optionally, suppression is further associated with the intensity of detail signal at each pixel position. An intensity checker checks the magnitude of the detail signal. If the detail signal is weak at a current pixel position, it is unlikely that obvious shoot artifacts appear at that position, and little or no suppression is applied. Such a method and system provide shoot suppression only in shoot areas while maintaining good enhancement in non-shoot areas.06-10-2010
20120033894Optical Information-Reading Apparatus and Optical Information-Reading Method - A method and apparatus to enable a position of an image to be identified and to enable the image to be recognized reliably even when the image is unclean or external disturbance light is irradiates the image. On a assumption that a binarization threshold value is calculated for every block based on the maximum and minimum values of the brightness values in code symbol data, plural adjacent blocks, the threshold values of which are calculated, are grouped to generate groups. The area of each of the groups thus generated is compared with a predetermined area for a comparison standard and if the area of each of the groups thus compared is larger than that, these groups are selected. The position of the selected groups is identified. Brightness value of the code symbol data are binarized using the threshold value for every block in the selected groups.02-09-2012
20120106868APPARATUS AND METHOD FOR IMAGE CORRECTION - An image correction apparatus for correcting an original image captured by a photographing device is provided. The image correction apparatus includes a storage and a texture mapping module. The storage therein stores mapping data sets associated with the photographing device. The invention is able to construct and utilize mapping data associated with a particular optical lens when used as part of the photographic device. The texture mapping module corrects an original captured image using a texture mapping procedure according to the appropriate mapping data to generate a corrected image. The texture mapping procedure may use mapping data in a polygon based approach to generate corrected images more efficiently.05-03-2012
20090263044IMAGE GENERATION APPARATUS AND IMAGE GENERATION METHOD - An image generation apparatus generates a new video sequence with a high S/N ratio and suppressed motion blurs, from an original video sequence and a still image which are generated by capturing the same dark, moving object. The image generation apparatus includes: a capture condition decision unit (10-22-2009
20090263043BLIND DECONVOLUTION AND SUPER-RESOLUTION METHOD FOR SEQUENCES AND SETS OF IMAGES AND APPLICATIONS THEREOF - The present invention relates to the image achieved by any conventional method of capture and their subsequent computer processing. The process of the invention presented is based on the simultaneous processing of the input images and their restoration (deconvolution) pixel by pixel by means of a new mathematical method. Furthermore, and in the case of having more than one image of the scene in question, the system is capable of providing superresolution of the input images. It has direct application in digital photographic cameras, digital video cameras, mobile phones, video and photography edition programmes, image analysis programmes for microscopy and astronomy, analysis of medical images, forensic image, image-based security systems, aerial image and in the restoration of works of art, among others.10-22-2009
20090274390Method for assessing the quality of a distorted version of a frame sequence - The invention is related to a method for video quality assessment.11-05-2009
20090202172Image Inspection Apparatus, Image Inspection Method and Computer Program - There is provided an image inspection apparatus capable of reliably removing a noise as a non-detection object and stably detecting a defect as a detection object, in which a first threshold setting device sets a minimum luminance value to be detected in a detection object image as a first threshold, a labeling processing device specifies blobs of pixels having luminance values larger than the first threshold from a multi-valued image acquired by an image pickup device, a second threshold setting device sets a second threshold that is larger than the first threshold, and a deletion device deletes the blob made up solely of luminance values smaller than the second threshold from all the blobs of the pixels specified by the labeling processing device and outputs the labeling processing image.08-13-2009
20090202170Blemish Removal - A method of removing blemishes from an image. The method receives a selection of an area of an image, divides the area into at least two interior sub-areas, and replaces the colors of each sub-area independently from each other sub-area.08-13-2009
20090279808Apparatus, Method, and Program Product for Image Processing - In a case where an index indicating the magnitude of the variation rate of pixel values within a target pixel block is greater than an index threshold value, weaker block noise strength is calculated compared with a case where the index is smaller than the index threshold value; and in a case where the calculated block noise strength is greater than a strength threshold value, a stronger smoothing process is carried out compared with a case where block noise strength is less than the strength threshold value.11-12-2009
20090285504Method for estimating noise according to multiresolution model - A method for estimating noise according to a multiresolution model is applied to an imaging device and comprises steps of: using an imaging sensor of the imaging device to capture a series of images of a scene under different imaging conditions; processing the images with a multiresolution transformation process to obtain a series of sub-images corresponding to different frequency layers; processing a series of the sub-images of the images that are in a same frequency layer to generate an averaged image; determining a difference between each of the sub-images in the same frequency layer and the averaged image corresponding to that frequency layer, and calculating the differences and the averaged image to obtain noise level functions of the imaging sensor in the different frequency layers under the different imaging conditions; and defining the noise level functions of the imaging sensor as noise samples for establishing an a priori model database.11-19-2009
20090290810MATTE-BASED VIDEO RESTORATION - Matte-based video restoration technique embodiments are presented which model spatio-temporally varying film wear artifacts found in digitized copies of film media. In general, this is accomplished by employing residual color information in recovering of artifact mattes. To this end, the distributions of artifact colors and their fractional contribution to each pixel of each frame being considered are extracted based on color information from the spatial and temporal neighborhoods of the pixel. The extracted information can then be used to restore the video by removing the artifacts.11-26-2009
20090297059METHOD FOR MINIMIZING SCINTILLATION IN DYNAMIC IMAGES - A scintillation removal in an image of a scene is provided by collecting a plurality of images, dividing the plurality of images into subsets of images, averaging each of the subsets of images to produce corresponding averaged images, differencing the averaged images, masking the difference images, and combining the masked images to produce a composite image.12-03-2009
20100111441METHODS, COMPONENTS, ARRANGEMENTS, AND COMPUTER PROGRAM PRODUCTS FOR HANDLING IMAGES - Artifacts are located in an electronic representation of an image. There is stored a characterisation of a located artifact. There is also output at least one of a characterisation of the artifact or a representation of the artifact. The system may aid the user to correct artifacts, for example by guiding her how to take a new image that contains data that helps in correcting the artifacts.05-06-2010
20100061655Method and Apparatus for Despeckling an Image - A method, computer readable medium, and device for reducing speckle in an image by detecting the edges of the image to create an edge detected image, binarizing the edge detected image to create a binary edge image for processing, creating a list, L, of connected components in the binary edge image, creating a list, C, of connected components in list L that are smaller than a predetermined number of pixels, determining noise candidate pixels from the edge detected image that are covered by the connected components in list C, computing a histogram h03-11-2010
20100061654Scatter estimation and reduction method and apparatus - A method and system are provided for removing or reducing the scatter within the image. In the present technique, two images are acquired at different energies such that one image, typically the higher energy image, provides an estimate of the scatter in the image. In one embodiment, the image providing the estimate of scatter is subtracted from the other image to provide a scatter-reduced image. In another embodiment, a low-frequency image is generated from the image providing the estimate of scatter and the low-frequency image is subtracted from the other image to provide the scatter-reduced image. One or more weighting factors, such as multiplicative weighting factors may be applied to the involved images prior to subtraction.03-11-2010
20100135595IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing apparatus including an image photographing unit, and a control unit, wherein the control unit includes a document image acquiring unit that acquires a document image including at least an image of a document, a contour extracting unit that extracts a contour of the document from the document image, the extracting the contour being performed based on luminance, a distortion position detecting unit that detects a contour straight line located at a location where a distance between the contour and a center point of a rectangle having the minimum area surrounding the contour is shortest, the contour straight line being detected as a distortion position in the document, the contour straight line being located on the contour, and a corrected image generating unit that performs a geometric correction on the document image to extend the contour to a correction reference line determined from the distortion position, and generates a corrected image having the distortion in the document image corrected.06-03-2010
20080240608IMAGE PROCESSING APPARATUS, CONTROL METHOD THEREFOR, PROGRAM, STORAGE MEDIUM, AND IMAGE CAPTURING APPARATUS - There is provided an image processing apparatus which corrects a shot image, which is shot by an image capturing apparatus and on which a shadow of a foreign substance existing on a shooting optical path of the image capturing apparatus is captured, so as to reduce an influence of the shadow of the foreign substance. The image processing apparatus includes a display unit which displays the shot image, a correction unit which corrects the shot image so as to reduce the influence of the shadow of the foreign substance on the basis of foreign substance information, an input unit which is used by a user to perform input operation in accordance with a shot image displayed on the display unit and inputs unregistered foreign substance information which has not been registered in foreign substance information, and an additional registration unit which additionally registers the unregistered foreign substance information.10-02-2008
20080292209Dynamic Range Compensation-Dependent Noise Reduction - Methods and corresponding apparatus are presented that perform digital range compensation (DRC) and noise reduction (NR) together, adjusting the noise reduction parameters in response to the digital range compensation decisions. By such a modification of image noise reduction parameters based on the dynamic range compensation gain or, more generally, other such factors, these techniques make it possible to perform DRC on noisy images, achieving an image with low and uniform noise levels.11-27-2008
20080292208Image Processing Method, Image Processing Device and Recording Medium on Which Image Processing Program is Recorded - A method employing a statistic means to test whether or not luminance signals around a point of interest are distributed according to the same probability distribution with respect to luminance signals of respective pixels constituting the image; determining a range where the same probability distribution can be regarded as being satisfied, estimating the true luminance value of the point of interest by using the luminance data of the range. Especially when the image signals are faint to such an extent that the intensity of the luminance signal is based on the Poisson distribution, it is effective to perform a smoothing processing for each of the probability distributions of the signals and the noises by a test of a uniformity of the Poisson distribution, enabling a clear and denoised image to be obtained.11-27-2008
20080304765IMAGE PROCESSING APPARATUS, CONTROL METHOD THEREOF, AND PROGRAM - An image processing apparatus which corrects image data containing an image of a foreign substance, and outputs the corrected image data that has undergone correction as a visible image includes an image pixel count acquisition unit which acquires the number of pixels of the image, an output resolution acquisition unit which acquires information about the resolution of the image to be output to the output device, a foreign substance correction level setting unit which sets the degree of foreign substance correction on the basis of at least the number of pixels acquired by the image pixel count acquisition unit and the information about the resolution acquired by the output resolution acquisition unit, and a foreign substance correction unit which corrects the image of the foreign substance contained in the image data on the basis of the foreign substance correction level set by the foreign substance correction level setting unit.12-11-2008
20100142850System, method, and product for scanning of biological materials - An embodiment of a scanning system is described including optical elements that direct an excitation beam at a probe array, detectors that receive reflected intensity data responsive to the excitation beam, where the reflected intensity data is responsive to a focusing distance between an optical element and the probe array, a transport frame that adjusts the focusing distance in a direction with respect to the probe array, an auto-focuser that determines a best plane of focus based upon characteristics of the reflected intensity data of at least two focusing distances where the detectors further receive pixel intensity values based upon detected emissions from a plurality of probe features disposed on the probe array at the best plane of focus, and an image generator that associates each of the pixel intensity values with at least one image pixel position of a probe array based upon one or more position correction values.06-10-2010
20090180710IMAGE CORRECTION METHOD, APPARATUS, ARTICLE AND IMAGE - An image correction method able to avoid error image. According to opposite properties of black and white, only the last few bits of the scanned digital signal are extracted for black correction, while only the first few bits of the scanned digital signal are extracted for white correction. Further, the most significant bit of the digital signal is 1 for white correction. Therefore, the unwanted LBB effect on the scanned image caused by dust or spot on the correction document is avoided. In addition, as only a few bits of the scanned digital signal are extracted, the requirement in memory capacity is reduced.07-16-2009
20090052800IMAGE PROCESSING SYSTEM, PROJECTOR, METHOD AND COMPUTER PROGRAM PRODUCT - The disclosure refers to an image processing system, projector, method and computer program product. In one example, an image processing system includes an interpolation unit that performs interpolation using an input image and a reference pixel in an input background part outside of the input image and interpolation pixels including neighboring pixels around the reference pixel, and a target pixel location determination unit that determines a location of a target pixel with respect to an image after distortion correction in a display area of an optical modulator.02-26-2009
20090161982Restoring images - The specification and drawings present a new method, apparatus and software product for restoring (i.e., de-noising and/or stabilizing) images using similar blocks of pixels of one or more different sizes in one or more available image frames of the same scene for providing, e.g., multi-frame image restoration/de-noising/stabilization.06-25-2009
20090161981Method for Enhancing Ground-Based Detection of a Moving Object - A method for enhancing detection of a moving object. The method includes comparing a video image to a historical sequence of images obtained from the same scene or stationary source. The method uses statistical sampling to implement change detection and thresholding operations which extract moving objects from the scene. The method provides for a high degree of sensitivity and noise rejection to motion detection, and is self-adapting to variations in sensor characteristics and operating environments.06-25-2009
20090161983Method for automatic detection and correction of halo artifacts in images - A method of automatically detecting and correcting halo artifacts within a processed image is described. The method computes a two-dimensional (2D) gradient field of the original image and a 2D gradient field of the processed image. Each gradient field includes a gradient vector corresponding to each pixel. To detect halo artifacts, the gradient vector at each pixel of the original image is compared to the gradient vector at the corresponding pixel of the processed image. A halo artifact is determined to exist at a given pixel if a direction of the two corresponding gradient vectors differs by at least a specified threshold. To correct the halo artifacts, a composite gradient field is generated using one of three correction methods. A final image is generated by integrating the newly generated composite gradient field using known integration methods from a 2D gradient field such as ones based on the Fast Fourier Transform.06-25-2009
20120063699METHOD OF REMOVING FOIL SHADOWS OF A SYNCHRONOUS GRID, AND A RADIOGRAPHIC APPARATUS USING THE SAME - Grid foil shadows of a synchronous grid are removable by obtaining an approximate fluoroscopic image by extracting detection signals of pixels not influenced by the grid foil shadows from a fluoroscopic image and carrying out an interpolation process thereon, obtaining a grid foil shadow image by determining a difference between the fluoroscopic image and the approximate fluoroscopic image, obtaining a foil shadow standard image by averaging the grid foil shadow image in a longitudinal direction of the grid foil shadows, and removing the grid foil shadows by determining a difference between the fluoroscopic image and the foil shadow standard image.03-15-2012
20090136151VIDEO PROCESSING APPARATUS AND VIDEO PROCESSING METHOD THEREOF - There are provided a video processing apparatus and a video processing method. The video processing apparatus includes a first motion correcting part which divides a video frame into blocks of a predetermined unit and corrects a motion with respect to at least some area of a present frame by using a motion vector of an adjacent block adjacent to the present block, a second motion correcting part which corrects the motion by using a motion vector of an adjacent frame adjacent to the present frame, and a controller which controls the first motion correcting part to correct the motion if the number of the adjacent blocks on which a video can be displayed is not smaller than a predetermined value, and controls the second motion correcting part to correct the motion if the number of the adjacent blocks on which the video can be displayed is smaller than the predetermined value.05-28-2009
20120063698IMAGE PROCESSING SYSTEM, PROJECTOR, METHOD AND COMPUTER PROGRAM PRODUCT - An image processing system includes a determination unit that determines a distortion state of a projected image, and a correction unit. The correction unit determines a shape of the image after distortion correction according to the distortion state, moves the determined shape in a display area of an optical modulator in a first direction, performs distortion correction of the image, and moves the image after distortion correction in the display area of the optical modulator in a second direction which is opposite to the first direction.03-15-2012
20080317379DIGITAL IMAGE ENHANCEMENT WITH REFERENCE IMAGES - A digital image processing technique detects and corrects visual imperfections using a reference image. A main image and one or more reference images having a temporal and/or spatial overlap and/or proximity with the original image are captured. Device information, image data and/or meta data are analyzed of the one or more reference images relating to a defect in the main image. The device corrects the defect based on the information, image data and/or meta-data to create an enhanced version of the main image.12-25-2008
20090052801Image processing apparatus, camera, image processing program product and image processing method - An image processing apparatus, includes: an information acquisition unit that obtains position information indicating a position of a first pixel group made up with pixels set along a predetermined direction among a plurality of pixels constituting an image; a smoothing processing unit that executes smoothing processing on pixel values indicated at the pixels in the first pixel group; and a control unit that controls the smoothing processing unit so that the smoothing processing unit executes the smoothing processing differently when using pixel values indicated at least at some pixels in the first pixel group during the smoothing processing and when using pixel values indicated at least at some pixels in a second pixel group among the plurality of pixels during the smoothing processing, the second pixel group being different from the first pixel group.02-26-2009
20090324129IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER PROGRAM - The image processing apparatus of the present invention is characterized by including an obtaining unit configured to obtain image data and a detection result of a main subject in the image data; a detecting unit configured to apply main subject detecting processing to the image data obtained by the obtaining unit; a coincidence determining unit configured to determine whether a detection result of the main subject obtained by the obtaining unit and a detection result of the main subject detected by the detecting unit coincide with each other; and a correction amount determining unit configured to determine an amount of correction to be applied to the image data in accordance with a determination result obtained by the coincidence determining unit. Image correction processing is performed in a determined correction processing manner.12-31-2009
20120070100IMAGE PROCESSING APPARATUS AND STORAGE MEDIUM - An image processing apparatus includes a first synthesizing unit that determines a first synthesis ratio of a plurality of images based on correlation amounts between a reference image and the plurality of images excluding the reference image and synthesizes a first image from a plurality of images based on the first synthesis ratio, a noise reducing unit that reduces noise of a plurality of images including the first image using a plurality of parameters and generates a plurality of noise-reduced first images including at least an image obtained by reducing noise of the first image, and a second synthesizing unit that determines a second synthesis ratio according to the first synthesis ratio and synthesizes a second image from the plurality of noise-reduced images based on the second synthesis ratio.03-22-2012
20090080798PROCESSING AN INPUT IMAGE TO REDUCE COMPRESSION-RELATED ARTIFACTS - In a method for processing an input image to reduce compression-related artifacts, a plurality of block transforms of the input image having respective plurality of block-grid locations are generated, where each of the block-grid locations is shifted with respect to the block-grid locations in each of the other block transformed images. In addition, a plurality of respective intermediate transform domain filtered images having modified transform coefficients are generated. Per-pixel relative weights are assigned to each of the intermediate transform domain filtered images, where each of the intermediate transform domain filtered images has different contexts, and where the per-pixel relative weights are adaptive to the local context in each of the intermediate transform domain filtered images. Moreover, a weighted average of inverse-transforms of the intermediate transform domain filtered images from the per-pixel relative weights to produce an artifact-reduced image is calculated and the artifact-reduced image is outputted.03-26-2009
20110142368METHOD AND APPARATUS FOR BLOCK-BASED IMAGE DENOISING - A block-based image denoising method includes determining similarities between a current block and reference blocks within a search range around the current block, from among certain-sized blocks divided from an input image; determining weights of the reference blocks with respect to the current block based on the similarities; and generating resultant blocks by denoising the current block with respect to every block of the input image based on the weights of the reference blocks.06-16-2011
20130121612PREVENTING PIXEL MODIFICATION OF AN IMAGE BASED ON A METRIC INDICATING DISTORTION IN A 2D REPRESENTATION OF A 3D OBJECT - A method, system, and computer-readable storage medium are disclosed for distortion-based mask generation. A respective distortion metric may be determined at each location of a plurality of locations in a two-dimensional representation of a three-dimensional object. The two-dimensional representation may be based on a view of the three-dimensional object. Each respective distortion metric may indicate a degree of distortion in a mapping between the respective location in the two-dimensional representation and a corresponding location in a surface texture of the three-dimensional object. The visual representation of the respective distortion metric at one or more of the plurality of locations may be displayed.05-16-2013
20130121613Methods and Apparatus for Directional Texture Generation Using Image Warping - Methods and apparatus for directional texture generation using image warping. An image warping directional texture generation method may, for example, be used to design hair or hairstyles. The method may obtain one or more user strokes via a provided brush or other user interface element to paint directional texture, such as hair, onto a target image. Primitives, such as strands, wisps, partings, etc., may be used to paint the directional texture. After the user applies a stroke to paint a primitive or a portion of a primitive onto the target image, the primitive may be automatically adjusted to fit the primitive to the stroke, handle distortion artifacts, and blend the primitive into the existing image. The user may continue to apply strokes until satisfied with the overall result.05-16-2013
20100135594METHOD AND APPARATUS FOR DETERMINING THE STRAY-LIGHT POINT-SPREAD FUNCTION OF AN IMAGING SYSTEM - A method of determining the point-spread function (PSF) of an imaging system includes the steps of capturing image data, establishing an idealized source spot, establishing a functional form model, subtracting the captured image from the estimated image equation and determining a metric that measures the fit of the estimated image to the captured image. The functional form model may include both diffraction and aberration and stray light. The functional form model may be optimized to reduce the metric to an acceptable level.06-03-2010
20090245683DEFECTIVE PIXEL CORRECTION DEVICE - First pixel data of a pixel of interest is output from a first shift register, while second and third pixel data of neighboring pixels indicative of the same color are output from second and third shift registers, respectively. Differential data between estimated pixel data calculated from the second and third pixel data and the first pixel data is input to a comparator. A threshold value stored in a register is modulated by the estimated pixel data, and is input to the comparator as modulated threshold data. When the comparator judges that the differential data is greater than the modulated threshold data, a selector outputs the estimated pixel data as corrected pixel data.10-01-2009
20090161984APPARATUS AND METHOD FOR IMAGE PROCESSING, AND PROGRAM FOR USE THEREIN, AND LEARNING APPARATUS - The present invention provides an image processing apparatus for converting a first image into a second image having higher image quality than that of the first image, includes: a first pixel value extracting section; an estimate noise amount arithmetically operating section; a processing coefficient generating section; a second pixel value extracting section; and a predicting section.06-25-2009
20090245681INFORMATION PROCESSING METHOD AND INFORMATION PROCESSING APPARATUS - Markers are laid out to express a predetermined code string by a plurality of continuous markers. The markers which form a marker string include at least two types of markers having different features which can be identified by image processing. Markers detected in the captured image are converted into numerical information, and are collated based on the numerical information and the predetermined code string. Using information associated with the markers, the coordinate information of each collated marker is calculated. The position and orientation of an image capturing device are calculated using the coordinate information. With a simple arrangement, the position and orientation of an image capturing device can be calculated.10-01-2009
20090257679SCENE BASED NON-UNIFORMITY CORRECTION SYSTEMS AND METHODS - Systems and methods provide scene-based non-uniformity correction for infrared images, in accordance with one or more embodiments. For example in one embodiment, a method of processing infrared images includes storing a template frame comprising a first plurality of pixel data of an infrared image; receiving an input frame comprising a second plurality of pixel data of an infrared image; determining frame-to-frame motion between at least some of the first and second plurality of pixel data; warping the template frame based on the determining of the frame-to-frame motion; comparing the first plurality of pixel data to the second plurality of pixel data to determine irradiance differences based on the determining; propagating pixel offset information for scene based non uniformity correction terms, based on the determining of the frame-to-frame motion, for at least some of the scene based non uniformity correction terms to other ones of the scene based non uniformity correction terms; updating the scene based non uniformity correction terms based on the comparing and the propagating; applying the scene based non uniformity correction terms to the second plurality of pixel data to reduce fixed pattern noise; and providing an output infrared image after the applying.10-15-2009
20100014776SYSTEM AND METHOD FOR AUTOMATIC ENHANCEMENT OF SEASCAPE IMAGES - A content-based image processing system and method are disclosed. The method includes automatically identifying whether an original image is a seascape. For an image which is identified as being a seascape, the method includes automatically assigning an enhancement class for the image, selected from a plurality of enhancement classes, the classes comprising a first enhancement class for sea landscape images and a second enhancement class for portrait images. The image is processed to generate an enhanced image. Where the image is assigned to the first enhancement class, this includes applying a first enhancement chain, which may include applying a polarizing filter. Where the image is assigned to the second enhancement class, the processing includes applying a second enhancement chain, which may include detecting regions corresponding to skin in the image and selectively applying local contrast enhancement to those regions corresponding to skin.01-21-2010
20100189377METHOD OF ESTIMATING AT LEAST ONE DEFORMATION OF THE WAVE FRONT OF AN OPTICAL SYSTEM OR OF AN OBJECT OBSERVED BY THE OPTICAL SYSTEM AND ASSOCIATED DEVICE - The invention relates to a method of estimating at least one deformation of the wave front of an observation system or of an object observed by said observation system, characterized in that: at least one diversity image is acquired, in the vicinity of the focal plane of the observation system, in at least one diversity plane, the diversity image comprising a known diversity deformation; and in that in each diversity plane, an image model is determined based on at least one decomposition of the physical pupil of the system into a plurality of subpupils; a decomposition over each subpupil of the sought-after deformation in the form of at least one known deformation weighted by coefficients to be determined; a determination of the transfer function of the system by autocorrelation of its pupil; the linearization of each of the terms of the autocorrelation as a function of the coefficients of the sought-after deformation, the linearization being performed in the vicinity of the known diversity deformation; the object observed and noise; and in that on the basis of the image model(s) determined and of the image(s) acquired, the sought-after deformation(s) or the observed object is (are) estimated.07-29-2010
20100189378IMAGE CORRECTION METHOD, APPARATUS, ARTICLE AND IMAGE - An image correction method able to avoid error image. According to opposite properties of black and white, only the last few bits of the scanned digital signal are extracted for black correction, while only the first few bits of the scanned digital signal are extracted for white correction. Further, the most significant bit of the digital signal is 1 for white correction. Therefore, the unwanted LBB effect on the scanned image caused by dust or spots on the correction document is avoided. In addition, as only a few bits of the scanned digital signal are extracted, the requirement in memory capacity is reduced.07-29-2010
20100226590APPARATUS AND METHOD FOR REDUCING NOISE FROM AN IMAGE - An apparatus and method for reducing noise in a high definition image are provided. When performing wavelet shrinkage for reducing noise, a signal level of an image may be estimated by adjusting a kernel size, and a noise level of the image may be estimated using a noise level function. After the signal level and the noise level are estimated, the noise may be removed or reduced, based on the signal level and the noise level, and the detail of the image may be maintained.09-09-2010
20120141045METHOD AND APPARATUS FOR REDUCING BLOCK ARTIFACTS DURING IMAGE PROCESSING - A method and apparatus for reducing artifacts during image processing is described. In some embodiments, the method includes examining an input image comprising at least one source region, for each target region in an output image, identifying a portion of the at least one source region based on similarity data, defining an omnidirectional cut boundary and determining intensity values for the each target region and at least one pixel between the each target region and the omnidirectional cut boundary.06-07-2012
20090041378Image Processing Device, Image Processing Method, Program Thereof, and Recording Medium Containing the Program - In an image processing apparatus that processes image data containing a distortion of an image pickup optical section, which is obtained by picking up an optical image from a subject through the image pickup optical section giving the distortion, a region selection mode setting section (02-12-2009
20090074323Image processing method, carrier medium carrying image processing program, image processing apparatus, and imaging apparatus - A proposition is to provide an image processing method, a carrier medium carrying an image processing program, an image processing apparatus, and an imaging apparatus capable of attaining line reproducibility and magnification distortion reduction in a well-balanced manner in an image. The image processing method is an image processing method for performing predetermined geometric transformation processing (h(θ)) on an image to be processed, in which the predetermined geometric transformation processing (h(θ)) includes geometric transformation processing for magnification distortion reduction (h=α tan (θ/2)̂(κp)) that reduces discrepancy between circumferential magnification and radial magnification of the image to be processed, and at least one parameter (θp) that determines the strength or content of the predetermined geometric transformation processing (h=α tan (θ/2)̂(κp)) is set according to the structure of the image to be processed.03-19-2009
20090324128APPARATUS AND METHOD FOR REDUCING TRANSITION ARTIFACTS IN AN OVERALL IMAGE COMPOSED OF SUB-IMAGES - The present invention provides an apparatus and a method for reducing transition artifacts in an overall image composed of sub-images whose image areas have overlap areas. The apparatus includes a storer for storing image data of the pixels of the sub-images, and a generator for generating the overall image, on the basis of the image data of the sub-images by superposition of the image data of the pixels in the overlap area in accordance with a weighting, the weighting being configured such that any influence of a pixel of a sub-image which would cause an artifact in the overall image is reduced in the overall image.12-31-2009
20100034481BAD PIXEL CLUSTER DETECTION - Systems and methods of bad pixel cluster detection are disclosed. In a particular embodiment, a system is disclosed that includes a bad pixel correction module coupled to receive image data and adapted to perform a bad pixel cluster detection process. The bad pixel correction module includes logic to determine whether two test pixels have values that exceed a representative value of a group of surrounding pixels by more than a threshold amount. The threshold amount is determined via a table lookup.02-11-2010
20090110325Image sensor with pixel array subset sampling - An apparatus comprising a pixel array to capture an image of a symbol code, wherein the image is formed on a plurality of pixels within the pixel array and is moving relative to the pixel array, and circuitry and logic coupled to the pixel array to sample a subset of pixels at a selected sampling rate, wherein the subset comprises at least one pixel from among the plurality of pixels on which the image is formed. A process comprising forming an image of a symbol code on a pixel array, wherein the image is formed on a plurality of pixels within the pixel array and is moving relative to the pixel array, and sampling a subset of pixels at a selected sampling rate, wherein the subset comprises at least one pixel from among the plurality of pixels on which the image is formed.04-30-2009
20100303381IMAGING SYSTEM AND IMAGING METHOD FOR IMAGING A REGION OF INTEREST - The invention relates to an imaging system for imaging a region of interest, in particular to a computed tomography system. First data for generating an image of the region of interest are provided, which are used by a reconstruction unit (12-02-2010
20110110604CROPPING SCANNED PAGES TO REMOVE ARTIFACTS - One embodiment is a method that crops a scanned page of a document to remove an artifact.05-12-2011
20100322533Cyclic Noise Removal in Borehole Imaging - A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) Fourier Transform, removing cyclic noise components from the transformed image, and inverse transforming the image back into the spatial domain using an inverse 2-D Fourier Transform. The cyclic noise component may also be isolated by subtracting the corrected image from the original image or by removing all non-cyclic noise components from the transformed image prior to inverse transforming. Removal of the cyclic noise from a borehole image tends to enable the identification of borehole features and provide for improved accuracy in formation parameter evaluation. Evaluation of the cyclic noise component may also enable the source of the noise to be identified and mitigated.12-23-2010
20090067745CORRECTION OF IMAGE DISTORTION - An image sensor captures an image of a scene. This captured image has a pincushion distortion relative to an undistorted image of the scene. The distortion is corrected based on an approximation of the distortion D which satisfies the following equation for a given pixel in the captured image: D=(R−R′)/R=Da*(y03-12-2009
20110033131METHODS FOR BACKGROUND AND NOISE SUPPRESSION IN BINARY TO GRAYSCALE IMAGE CONVERSION - One embodiment is a method for suppressing background inaccuracies in binary to grayscale image conversion. A binary image is converted to a grayscale image using a neighbor map. An image enhancement function is applied to the grayscale image to suppress background inaccuracies in the grayscale image. Another embodiment is method for converting a binary pixel of a binary image to a grayscale pixel of a grayscale image and suppressing noise in the grayscale image using selective filtering of the binary image. Another embodiment is a method for converting a binary image to a first grayscale image and suppressing noise in the first grayscale image to produce a noise suppressed grayscale image using selective filtering of the first grayscale image.02-10-2011
20110033132IMAGE CORRECTION APPARATUS AND IMAGE CORRECTION METHOD - An input image containing multiple kinds of blur is corrected without using multiple images, resulting in a target image with less blur than the input image. An image correction apparatus (02-10-2011
20110044555MERGING OF IMAGE PIXEL ARRANGEMENTS - A method for reducing visible artifacts includes operating recording channels to form image pixel arrangements comprising a plurality of image pixel columns. Each column extends along a first direction and each image pixel has a size L in a second direction. The recording channels form a first image pixel arrangement and the arrangement includes a first set of M image pixel columns. Image pixels in the first set of M image pixel columns are formed in accordance with first image data. Second image data is modified to include the first image data. Second image pixel arrangement are formed and include a second set of M image pixel columns. A distance between the first set of M image pixel columns and the second set of M image pixel columns is adjusted such that the first set of M image pixel columns is overlapped by the second set of M image pixel columns.02-24-2011
20110044558CORRECTING DEFECTS IN AN IMAGE - A method of correcting dirt or other defects in video or other images in which a region is provisionally corrected, an accumulated gradient measure formed along the periphery of the region with and without correction and the region corrected or not depending on a comparison of the gradient measures.02-24-2011
20110044559IMAGE ARTIFACT REDUCTION - A method includes generating simulated complete projection data based on acquisition projection data, which is incomplete projection data, and virtual projection data, which completes the incomplete projection data and reconstructing the simulated complete projection data to generate volumetric image data. An alternative method includes supplementing acquisition image data generated from incomplete projection data with supplemental data to expand a volume of a reconstructable field of view and employing an artifact correction to correct a correctable field of view based on the expanded reconstructable field of view.02-24-2011
20110044557Method and control unit for rectifying a camera image - A method for rectifying a camera image includes: receiving a plurality of distorted pixels of a distorted camera image; receiving a compressed rectifying rule, via an interface; and performing a decompression of the compressed rectifying rule, in order to obtain a decompressed rectifying rule for rectifying the distorted camera image. A plurality of rectified pixels of a distorted camera image is determined from the plurality of distorted pixels, using the decompressed rectifying rule.02-24-2011
20110044556MERGING IMAGE PIXELS BASED ON MAIN-SCAN MISALIGNMENT - A method for reducing visible artifacts among image pixels formed on recording media by a plurality of individually addressable recording channels includes operating the recording channels to form a plurality of image pixel arrangements, wherein each image pixel arrangement comprises a plurality of image pixel columns extending along a first direction. The image pixels columns in each image pixel arrangement are arranged along a second direction that intersects the first direction. The recording channels form a first image pixel arrangement on the recording media and overlap a first image pixel column with a second image pixel column by an amount along the second direction that is determined based at least on a misalignment along the first direction between two of the image pixel arrangements.02-24-2011
20120243801IMAGE PROCESSING APPARATUS, IMAGING APPARATUS, STORAGE MEDIUM STORING IMAGE PROCESSING PROGRAM, AND IMAGE PROCESSING METHOD - An image processing apparatus includes an image reducing section generating at least one reduced image by generating a reduced pixel with reference to pixel values by each predetermined area of a target image being a process object, a noise extracting section extracting a noise component at a frequency band according to a reduction ratio of the reduced image for each reduced pixel based on the reduced image, a noise subtraction section subtracting the noise component of the reduced pixel from each of pixels at the predetermined area being referred to generate the reduced pixel, and an area smoothing section smoothing the pixels with each other at the predetermined area being referred to generate the reduced pixel based on the noise component of the reduced pixel.09-27-2012
20130156341AUTOMATIC GENERATION OF A PHOTO GUIDE - An apparatus, method and an image quality guide document are disclosed. The method includes, for at least one image in a set of images undergoing image enhancement, identifying image quality-related features for the image based on enhancements being applied to the image, identifying image content-related features based on content of the image, determining a content-based degradation of the image based on the identified image quality-related features and image content-related features, and generating a thumbnail of the image. The method further includes generating an image quality guide document for the set of images in which at least one of the thumbnails is associated with a respective text description that is based on the determined content-based degradation.06-20-2013
20090310885Image processing apparatus, imaging apparatus, image processing method and recording medium - Sharpness is calculated in all of focus-bracketed images on a pixel basis. Then, a first reference value indicating an image of the plurality of images to which a pixel whose sharpness is the highest among the pixels located on the identical positions in the plurality of images belongs is obtained on each pixel of the images, and a second reference value is calculated based on the first reference value on each pixel by spatially smoothing the first reference value on each pixel based on the first reference values on adjacent pixels. The focus-bracketed images are processed based on the second reference values to generate an omni-focus image or a blur-enhanced image. Accordingly, it is possible to judge a region having high contrast as an in-focus region and acquire a synthesized image having smooth gradation.12-17-2009
20110085744No-Reference Spatial Aliasing Measure for Digital Image Resizing - A method for detecting aliasing artifacts includes receiving a second image that has been converted from a first image and evaluating the second image using a computer to detect aliasing artifacts due to the conversion, where the evaluation is performed without reference to the first image. The second image is a different size than the first image The second image is evaluated by identifying patches in the image that are likely to contain strong directional energy with few distractions and to estimate a direction component for each of the identified patches. The total energy of each patch is partitioned into an estimated signal energy and an estimated aliasing energy. The estimated aliasing energy and the estimated signal energy of each of the identified patches are combined to obtain an estimate of the aliasing artifacts in the image.04-14-2011
20100014778IMAGE CORRECTING APPARATUS, IMAGE CORRECTING METHOD, PROJECTOR AND PROJECTION SYSTEM - An image correcting apparatus that corrects an image to be projected by a projector on the basis of a local distortion of the projection plane includes an amount-of-distortion calculating unit that calculates the amount of distortion at each of a plurality of feature points on an image, which is projected on the projection plane, for calculating the amount of distortion on the basis of the captured image obtained by capturing the image, an image-correcting-method selecting unit that selects an image correcting method according to the amount of distortion at each of the feature points, which is calculated by the amount-of-distortion calculating unit, and an image correction processing unit that corrects a predetermined area of the image to be projected by the image correcting method selected by the image-correcting-method selecting unit.01-21-2010
20100246994IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND IMAGE PROCESSING PROGRAM - An image processing device, an image processing method, and an image processing program by which deformation such as distortion caused by an imaging optical system can be corrected with high precision without increase in memory capacity and processing time. The image processing device comprises a vertex sampling coordinate computing section (09-30-2010
20100246993METHOD FOR DETERMINING DISTORTIONS IN A PARTICLE-OPTICAL APPARATUS - The invention relates to a method of determining the distortions in the projection system of a TEM, and a method of correcting for these aberrations. The aberrations are determined by collecting a large number of images of a sample, the sample slightly displaced between each acquisition of an image. On the images sub-fields (09-30-2010
20110081098METHOD OF CORRECTING DISTORTION OF SCANNED IMAGE - A method of correcting distortion of a scanned image, the method including; providing a reference chip wherein positions of a plurality of spots and a gap region between the plurality of spots are defined, scanning the reference chip to obtaining a scanned image of the reference chip by scanning the reference chip, measuring distortion in the scanned image of the reference chip, preparing a biochip where a second plurality of spots are arrayed in a complementary form to the distortion and obtaining a scanned image of the biochip.04-07-2011
20110069904IMAGE DENOISING METHOD - An image denoising method according to the present invention includes the steps of: sequentially selecting a pixel in an image as a current pixel; dynamically determining a current search block and a strength parameter; transferring the comparison block of each pixel in the current search block to a frequency domain; determining a current frequency basis; obtaining a similarity between each neighborhood pixel and the current pixel in the current search block according to the current frequency basis; determining a weighting of each neighborhood pixel related to the current pixel according to the strength parameter, and a distance and the current pixel in the current search block; and weighted averaging each neighborhood pixel and the current pixel in the current search block according to the weighting so as to obtain a reconstruction value of the current pixel.03-24-2011
20100303380Automatic Dust Removal In Digital Images - Methods and a processing device are provided for restoring pixels damaged by artifacts caused by dust, or other particles, entering a digital image capturing device. A user interface may be provided for a user to indicate an approximate location of an artifact appearing in a digital image. Dust attenuation may be estimated and an inverse transformation, based on the estimated dust attenuation, may be applied to damaged pixels in order to recover an estimate of the underlying digital image. One or many candidate source patch may be selected based on having smallest pixel distances, with respect to a target patch area. The damaged pixels included in the target patch area may be considered when calculating the pixel distance with respect to candidate source patches. RGB values of corresponding pixels of source patches may be used to restore the damaged pixels included in the target patch area.12-02-2010
20100119173SYSTEM AND METHOD FOR REDUCING ARTIFACTS IN IMAGES - A system and method of the present disclosure provides a block, or region, based error diffusion process for reducing artifacts in images. The system and method allows for the generation and the control of the spatial frequency of a masking signal, e.g., noise, in a way that it can be easily passed through the compression process. The system and method provides for selecting a block size of pixels of the image, adding a masking signal to the image, determining a quantization error for at least one block in the image, and distributing the quantization error to neighboring blocks in the image to mask artifacts in the image. An output image is then encoded with a compression function.05-13-2010
20100254624Method of correcting image distortion - Provided are a method of correcting image distortion and a computer-readable recording medium including a program for executing the method on a computer. An image, distorted by uneven illumination and lens curvature of an apparatus such as a digital camera, is corrected to obtain an accurate image.10-07-2010
20100014777SYSTEM AND METHOD FOR IMPROVING THE QUALITY OF COMPRESSED VIDEO SIGNALS BY SMOOTHING THE ENTIRE FRAME AND OVERLAYING PRESERVED DETAIL - Systems and methods are disclosed for improving the quality of compressed digital video signals by separating the video signals into Deblock and Detail regions and, by smoothing the entire frame, and then by over-writing each smoothed frame by a preserved Detail region of the frame. The Detail region may be computed only in Key Frames after which it may be employed in adjacent frames in order to improve computational efficiency. This improvement is enhanced by computing an Expanded Detailed Region in Key Frames. The concept of employing a smooth Canvas Image onto which the Detail image is overwritten is analogous to an artist first painting the entire picture with an undetailed Canvas (usually using a broad large brush) and then over-painting that Canvas with the required detail (usually using a small fine brush).01-21-2010
20090022418Minimizing blocking artifacts in videos - Techniques for minimizing blocking artifacts in video images or frames are disclosed. In general, these blocking artifacts are the result of block-based compression standards, such as MPEG-1, MPEG-2, MPEG-4, H.261, H.263, and H.264. According to one aspect of the present invention, a blurring process is configured to replace pixels on the blocking boundaries with randomly selected pixels within respective regions, each of the regions is predefined with respect to a pixel being replaced. In a certain perspective, a blocking boundary is diffused without introducing blurring to other than the blocking artifacts. According to another aspect to the present invention, pixels in an image or frame are sequentially processed by a moving average process that is configured to smooth only those pixels that may cause subjective perception of the blocking artifacts.01-22-2009
20090252433METHOD AND APPARATUS FOR PROVIDING AN INDICATION OF A LEVEL OF DISTORTION CREATED BY BLOCKING ARTIFACTS - A method and apparatus are disclosed for providing an indication of a level of distortion created by blocking artifacts in an image comprising a plurality of pixels, the method comprising for each pixel in a first given direction, determining a corresponding gradient between the pixel and a neighboring pixel, for each pixel in the first direction, summing each of the corresponding determined gradient in a second direction to provide a plurality of gradient summing values, computing a level of distortion for each of at least one potential block size using at least one of the gradient summing values, determining an actual block size using the computed at least one level of distortion and providing the level of distortion corresponding to the determined actual block size.10-08-2009
20090180709Providing a digital copy of a source image - The present invention relates to a method for an automatic alignment of digital image layers, implemented in specific software on a computing device (e.g. a personal computer (07-16-2009
20090136152IMAGE CORRECTING APPARATUS AND METHOD, AND IMAGE CORRECTING PROGRAM, AND LOOK-UP TABLE CREATING APPARATUS AND METHOD, AND LOOK-UP TABLE CREATING PROGRAM - A bright luminance value, a dark luminance value, and an average luminance value relating to a face image portion included in an image represented by fed image data are calculated in calculating circuits. Further, a target bright luminance value and a target dark luminance value are calculated in a calculating circuit on the basis of a target average luminance value and a dynamic range that are inputted from an input device and the calculated bright luminance value, dark luminance value, and average luminance value. Interpolation processing based on a correspondence between the calculated bright luminance value, dark luminance value, and average luminance value relating to the face image portion and the target bright luminance value, the target dark luminance value, and the target average luminance value respectively corresponding thereto is performed in a corrected value calculating circuit, to create a look-up table.05-28-2009
20090110324White/black pixel correction in a digital image sensor - Disclosed are embodiments of an apparatus comprising an image sensor comprising a pixel array including a plurality of pixels, a detection circuit coupled to the pixel array to detect potential white/black pixel defects in the pixel array, a correction circuit coupled to the detection circuit to correct potential white/black pixel defects detected by the detection circuit. The apparatus further comprises a digital signal processor coupled to the image sensor, the digital signal processor comprising a memory to have therein a list of defective pixels in the pixel array, and a processor coupled to the memory to cross-check each pixel against the list of defective pixels and correct the digital value of each pixel found in the list of defective pixels. Other embodiments are disclosed and claimed.04-30-2009
20090080797Eye Defect Detection in International Standards Organization Images - A method and apparatus for providing image processing. For one embodiment of the invention, a digital image is acquired. One or more relatively large candidate red eye defect regions are detected in at least a portion of the image. Face detection is applied to at least a portion of the image to eliminate non-face regions and one or more relatively small candidate red eye defect regions are identified in at least a portion of the image not including the eliminated non-face regions.03-26-2009
20080253682De-ringing filter for decompressed video data - A post processing apparatus of a graphics controller to filter decompressed video data. An embodiment of the apparatus includes a buffer and a de-ringing filter. The buffer is configured to read a pixel line of video data from memory. The pixel line includes pixels from adjacent macroblocks of the video data. The de-ringing filter is coupled to the buffer. The de-ringing filter is configured to identify a maximum pixel jump between adjacent pairs of pixels in the pixel line and to apply a de-ringing filter to a pixel within a pixel subset of the pixel line in response to a determination that the pixel is not an edge pixel. The determination that the pixel is not an edge pixel is based on the identified maximum pixel jump.10-16-2008
20080205788Image Processing Apparatus and Method, and Computer Program and Computer-Readable Storage Medium - This invention obtains information required to quantitatively evaluate block distortion of an image on the basis of encoded data that utilizes the compression encoding technique for respective blocks. To this end, a compression encoding unit (08-28-2008
20110164829IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - The value of a diffusing error for an interest pixel is added to image data of the interest pixel, and is calculated from error data occurred in quantization of pixels adjacent to the interest pixel. The image data, to which the value of the diffusing error is added, is quantized using a quantization threshold. Error data of the interest pixel is calculated from the result of the quantization and the image data to which the value of the diffusing error is added. Pixels which are adjacent to the interest pixel and have quantization results corresponding to the image data of the interest pixel are detected, and information between pixels is calculated based on differences between the image data and quantization results of adjacent pixels which fall within ranges corresponding to the detected adjacent pixels. The quantization threshold for the interest pixel is set based on the information between pixels.07-07-2011
20100284627APPARATUS AND METHODS FOR MOTION VECTOR CORRECTION - A motion vector correction apparatus for correcting an estimated motion vector for a pixel located at a position of an interpolated frame between a first and a second frame is provided, including a three-frame motion estimation unit estimating a previous and a following motion vector fields; a motion vector selection unit determining a set of reference motion vectors associated with the first and second frame for the position of the pixel, wherein the reference motion vectors include a first motion vector set as the estimated motion vector and a pair of corresponding motion vectors from the previous and following motion vector fields; and a motion vector correction unit obtaining a measure of consistency between the corresponding motion vectors, adapting a plurality of weighted factors according to the measure of consistency and correcting the estimated motion vector according to the adapted weighted factors and the set of reference motion vectors.11-11-2010
20100284628X-RAY COMPUTED TOMOGRAPHY APPARATUS - According to one embodiment, an X-ray computed tomography apparatus comprises an X-ray generating unit, an X-ray detecting unit, a rotating mechanism configured to rotate the X-ray generating unit and the X-ray detecting unit, a reconstruction processing unit configured to reconstruct first images respectively corresponding to volumes, a shift detecting unit configured to detect shifts of an object image due to warp of the top within a reconstruction coordinate system of the reconstruction processing unit, which shifts respectively correspond to the first images, and a control unit configured to move an origin of the reconstruction coordinate system for each of the volumes based on each of the detected shifts and control the reconstruction processing unit to reconstruct second images, which shifts respectively correspond to the volumes from the output from the X-ray detecting unit on the reconstruction coordinate system whose origin has been moved.11-11-2010
20110135219IMAGE PROCESSING APPARATUS, METHOD, INTEGRATED CIRCUIT, AND PROGRAM, AND RECORDING MEDIUM HAVING THE PROGRAM RECORDED THEREON - To provide an image processing apparatus which reduces, using a temporal noise removal scheme, image block distortion or noise and temporal flickering and fluctuation phenomena. The image processing apparatus (06-09-2011
20110135218IMAGE PROCESSING - An image processor includes a readout arranged to read out an M-bit image data word from an image sensor pixel array and an adder arranged to add a noise contribution to the image data word to obtain a dithered M-bit word. A dither processor is arranged to derive correction data having a word size of M+1 bits from a combination of a plurality of M-bit reference words. The noise contribution are derived from said correction data, wherein different correction data are derived for different groups of pixels, each different group of pixels is associated with a specific pixel value DC shift.06-09-2011
20110052092SYSTEM AND METHOD FOR PROCESSING DIGITAL NOISE IN A DIGITAL IMAGE - A processing digital noise method generates a matrix according to pixel values of pixels of a digital image, and selects a sub-matrix from the matrix. The sub-matrix has the same dimensions as a digital noise sample and includes a pixel value of a pixel selected from the digital image. The digital noise sample is represented as a matrix composed of 0 and 1. The method compares the sub-matrix with the digital noise sample to determine whether or not all values in the sub-matrix and the digital noise sample are the same. If all values are the same, the method further searches 1 from the sub-matrix for locating digital noise of the digital image, and removes the digital noise of the digital image by changing the pixel values of the digital noise from 1 to 0.03-03-2011
20110097013APPARATUS AND METHOD FOR PROCESSING IMAGE SIGNAL WITHOUT REQUIRING HIGH MEMORY BANDWIDTH - An image signal processor for processing an input image signal to output an output image signal includes an input unit receiving the input image signal, a noise removal unit removing noise from the input image signal, and a scaler reducing, maintaining or magnifying the image size of the input image signal. The scaler directly receives the input image signal from the input unit or the noise removal unit in response to a route control signal, reduces the image size of the input image signal when the image size of the input image signal is larger than the image size of the output image signal and stores the image signal with a reduced image size in a memory. The scaler maintains or magnifies the image size of the image signal stored in the memory and outputs the image signal with a maintained or magnified image size as the output image signal.04-28-2011
20100195930DEVICE, SYSTEM AND METHOD FOR IMPROVING IMAGE QUALITY BY ADDRESSING IMAGE NOISE FROM ELECTRICAL NOISE - Provided are devices, systems and methods that improve image quality by identifying and addressing image noise caused by electrical noise. Electrical noise emanating from a plurality of components of an image apparatus is identified, producing an electrical noise detection calculation based on the detected electrical noise, and inputting the electrical noise detection calculation into an image noise correction calculation apparatus, calculating an image noise correction calculation.08-05-2010
20110262054SYSTEM AND METHOD FOR ITERATIVE IMAGE RECONSTRUCTION - Methods are provided for iteratively reconstructing an image signal to generate a reconstructed image signal. In one embodiment, sub-iterations of each iteration are performed on pixel or voxel subsets. The subsets may be composed of neighboring or spatially separated pixel or voxels and may extend in the z-direction. In one embodiment, an update step of the iterative reconstruction involves the direct inversion of an approximation of a Hessian matrix associated with the respective subsets. In further embodiments, non-negativity or other limitations or constraints on update values may be enforced.10-27-2011
20100260437IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, PROGRAM, RECORDING MEDIUM, AND INTEGRATED CIRCUIT - An image processing device (10-14-2010
20110188777Input compensating for imaging distortion - Certain aspects can relate to obtaining at least some input compensating information at least partially based on the distortion characterizing imaging information that when applied to an imaging modality used to obtain the at least one image information can limit distortions to the at least the portion of the at least one image information resulting from at least a portion of at least one distorting feature, wherein the at least some input compensating information is characterized based at least in part on the at least one relative orientation of the at least the portion of the at least one distorting feature relative to the at least one image information.08-04-2011
20100027909CONVEX OPTIMIZATION APPROACH TO IMAGE DEBLOCKING - Images encoded at low-bit rate may suffer from blocking artifacts, which can dramatically degrade the visual quality of the images. In accordance with the claimed subject matter, a convex optimization approach is provided in order to mitigate such blocking artifacts. Based on the analysis of image coding process as well as natural image properties (e.g., image complexity), a set of constraint functions can be constructed. In addition, an objective function can be constructed based upon, e.g. analysis of a quantization noise model. All functions included in the set as well as the objective function can be convex function. Accordingly, image deblocking can be formulated as a convex optimization problem which can be easily solved using numerical methods. Moreover, the feasibility of the convex optimization problem can be utilized to detect the true object edges and avoid blurring.02-04-2010
20100021080IMAGE PROCESSING DEVICE, IMAGE DISPLAY DEVICE, AND IMAGE DATA PRODUCING METHOD - An image processing device includes: a transformation ratio calculation unit which calculates transformation ratio of an image after transformation, the image after transformation being obtained by transforming an original image under predetermined rule; a filter coefficient calculation unit which calculates filter coefficients based on the transformation ratio; and a pixel value calculation unit which calculates the pixel value of each pixel in the image after transformation using the filter coefficients and outputs the pixel value of the image after transformation as image data after transformation.01-28-2010
20100021078SIGNAL PROCESSING APPARATUS - A signal processing device, which is more practical for restoring signals, includes a signal processing unit for processing a signal. The processing unit produces restored data that approaches the original signal data before fluctuating (before blurring) by repeating the following processing: generating comparison data Io′ from arbitrary signal data Io by using information data G regarding fluctuation factors that triggers signal fluctuation; comparing the comparison data Io′ with original signal data Img′ as an object to be processed thereafter; producing restored data Io+n by allocating difference data δ to the arbitrary signal data Io while using the information data G regarding fluctuation factors; and substituting the restored data Io+n for the arbitrary signal data Io thereafter.01-28-2010
20080240607Image Deblurring with Blurred/Noisy Image Pairs - Image deblurring with blurred/noisy image pairs is described. In one implementation, a system combines a blurred image with a corresponding noisy image of the same subject to create a high-quality deblurred image. The blurred/noisy image pair can be acquired by an inexpensive hand-held camera, e.g., in unfavorable low light conditions. An exemplary iterative process uses the blurred image and the noisy image at each step to produce the high-quality image. First, the system estimates the blur kernel of the blurred image using information from both the blurred and noisy images. Then, the system performs residual image deconvolution, which favors suppression of ringing artifacts. Finally, the system applies gain-controlled deconvolution to suppress remaining ringing artifacts in smooth image regions. The system iterates these steps to obtain the final high-quality image.10-02-2008
20120039545METHOD AND APPARATUS FOR PERFORMING BAD PIXEL COMPENSATION - A method for performing bad pixel compensation includes: with regard to each direction of a plurality of directions, summing up absolute values of differences between a plurality of sets of first pixel values around a target pixel of an image to generate a first detection value, and with regard to each direction of at least a portion of the directions, summing up absolute values of differences between a plurality of sets of second pixel values around the target pixel to generate a second detection value, where each set of the sets of first pixel values and the sets of second pixel values includes two pixel values corresponding to a difference; and with regard to a specific direction of the directions, selectively performing bad pixel compensation on the target pixel according to the first detection value and the second detection value. An associated apparatus is also provided.02-16-2012
20110142367METHODS AND SYSTEMS FOR CORRECTING IMAGE SCATTER - Methods and systems for correcting image scatter are provided. The method includes generating an estimate of a detector activity, determining a probability that a scatter event has been counted as a true event using the estimate of a detector activity; generating a scatter correction estimate based on the determined probability, and applying the scatter correction estimate to an emission data set to generate an image of an object.06-16-2011
20110305404Method And System For Example-Based Face Hallucination - A method for example-based face hallucination uses manifold learning to project a plurality of training images in a training database and an input low resolution (LR) face image into a same manifold domain, then iteratively refines the reconstruction basis by selecting a training set having k projected training images which best match the parts of the projected LR face image, where k≦N and N is the number of projected training images. Through the best-match training set, a set of prototype faces are learned, and the set of prototype faces are used as the reconstruction basis to reconstruct a high resolution face image for the input LR face image.12-15-2011
20090080799METHOD FOR CREATING REFERENCE IMAGES IN ELECTRON MICROSCOPES - Methods for creating reference images of fiber optic sensor plates for use in electron microscopes. The methods include taking of reference images of stripe or dot patterns. The spatial frequency of the stripe or dot patterns is such that image artifacts of the fiber optic stacks is recorded. The reference images can then be used to correct for these artifacts.03-26-2009
20090324127Method and System for Automatic Red-Eye Correction - Methods and systems are provided for automatic red-eye correction in digital images in which the location of red eyes in a digital image is detected, the red eyes in the digital image are corrected by restoring the red eyes to their natural color; and the corrected digital image is displayed.12-31-2009
20100027910METHOD FOR MINIMIZING DATA TRANSITION AND CIRCUIT FOR MINIMIZING DATA TRANSITION - A data transition minimization method includes exclusive-NORing inputted nth image data (where n is a natural number) and (n−m)th image data (where m is a natural number smaller than n) expressing the same color as that of the nth image data to generate transition information data; generating inversion data indicative of inversion information by inverting all bits included in the transition information data and adding a unit bit having the logic value ‘1’ to the inverted transition information data when the number of unit bits having a logic value ‘1’ in the transition information data is larger than the number of unit bits having a logic value ‘0’ in the transition information data, and adding a unit bit having the logic value ‘0’ to the transition information data when the number of unit bits having the logic value ‘I’ in the transition information data is equal to or smaller than the number of unit bits having the logic value ‘0’ in the transition information data; exclusive-NORing the transition information data with the inversion data added and corrected image data of (n−1)th image data to generate corrected image data of the nth image data, and supplying the generated corrected image data to a data driver through data transmission lines; and restoring the corrected image data supplied to the data driver to restored image data corresponding to the original nth image data.02-04-2010
20090080796Defect Correction in Blurred Images - A method and apparatus for providing defect correction in blurred images is disclosed. For one embodiment of the invention, a digital image is acquired. One or more candidate defect regions in the image are identified. The candidate defect regions are corrected and responsive to the image being blurred, the corrected regions of the image are blurred. For one embodiment of the invention, a digital image is acquired and one or more candidate eye defect regions in the image are identified. The candidate eye defect regions are corrected and if the image is blurred, the corrected regions of the image are blurred accordingly.03-26-2009
20110170797OPTICAL DEVICE FOR CORRECTING GEOSTATIONARY SATELLITE IMAGERY FOR EARTH CURVATURE EFFECTS - An optical adapter for an imaging system correcting images of spherical or near spherical bodies such as the earth during satellite image collection. An imaging system includes an image collector that collects a two-dimensional image of the body from a distance above the body such as from a satellite in geostationary orbit. The collected image is disk shaped and includes distortion due to earth curvature, primarily in the form of a loss of resolution due to the foreshortening of earth features in a radial direction extending outward from the center of the image disk. The optical adapter receives the collected image, transforms the collected image to correct the distortion, and outputs a corrected image with essentially uniform spatial resolution across the areas for which the correction is applied. An image sensor such as charge-coupled device array senses the corrected image and creates a digital representation of the corrected image.07-14-2011
20120207403METHOD OF ANALYZING AND/OR PROCESSING AN IMAGE - A method of processing a starting image, to obtain a final image of better quality, the method comprising the following steps: a) establishing a predefined quality level and/or a predefined processing time for the final image; b) computation information relating to said starting image; c) analyzing said starting image by means of said computed information; d) determining whether said information is sufficient to obtain said predefined quality level for said final image; e) if the step d) determines that the information is sufficient and/or if processing time is exhausted, reducing the noise of said starting image to obtain said final image; and f) if the step d) determines that the information is insufficient and/or processing time is not exhausted, refining the computation in the step b).08-16-2012
20120027319METHOD AND ELECTRONIC DEVICE FOR REDUCING DIGITAL IMAGE NOISES - A method and an electronic device for reducing digital image noises are described. The method includes the steps of sequentially selecting a pixel from a digital image, and setting the pixel as a target pixel; defining a first area, and setting at least two of the rest pixels surrounding the target pixel in the first area as adjacent pixels; setting a first weighted area; setting a second weighted area corresponding to the first weighted area; computing a weight of the adjacent pixel located at a center position of the second weighted area by using a piecewise linear curve according to a similarity value of the first weighted area and the second weighted area; computing a weighted average of all the adjacent pixels and the target pixel, to determine a new value of the target pixel; and performing the above steps repeatedly, till all the pixels are processed.02-02-2012
20110091130METHOD AND MODULE FOR IMPROVING IMAGE FIDELITY - The present invention relates to a method and a module for improving image fidelity. For doing so, the present invention introduces noise (N) to at least one DAC value of at least some pixels, using one or multiple various patterns.04-21-2011
20110091129IMAGE PROCESSING APPARATUS AND METHOD, AND PROGRAM - An image processing apparatus includes a texture extracting unit extracting a texture component of a blurred image in which a blur has occurred and a combining unit combining the texture component of the blurred image extracted by the texture extracting unit with a blur-corrected image obtained by correcting the blur of the blurred image.04-21-2011
20110091128DISPLAY APPARATUS TO ENHANCE IMAGE QUALITY THROUGH REPEATED PROCESSING AND IMAGE PROCESSING METHOD THEREOF - A display apparatus capable of repeating an image quality enhancement process for an input image for a number of times to enhance image quality of the input image, and an image processing method thereof are provided. Accordingly, since the display apparatus repeats the image quality enhancement process for a single image frame, the display apparatus may enhance the image quality with high performance using a small memory capacity.04-21-2011
20110103710APPARATUS AND METHOD OF REDUCING NOISE IN RANGE IMAGES - An apparatus and method of reducing noise in range images, the apparatus including: a maximum likelihood detection unit calculating an equation of observation points disposed in a plurality of grids that constitute range images representing three-dimensional (3D) coordinate information, to satisfy maximum log-likelihood on each coordinate axis in a coordinate space represented by the range images based on probability distribution of coordinate values assigned to each of the observation points and neighboring observation points; a linearization unit transforming equations calculated on each of the observation points into a linear equation that is a linear system on each coordinate axis in a coordinate space; a constraint detection unit calculating a constraint equation in which a unit tangent vector of each observation point and a unit tangent vector of a neighboring point are identical with each other on each coordinate axis of the range images; and a noise reduction unit reducing noise in range images by applying a resultant value that is obtained by calculating a value of a linear equation represented in the form of least squares together with the constraint equation by using a normal equation on a position of each observation point in the range images. Noise in range images in which noise is not uniformly distributed, may be well reduced so that a smooth curved surface having stable curvature may be obtained.05-05-2011
20100246995Method for Performing Dual Mode Image Rejection Calibration in a Receiver - A method is disclosed for performing dual mode image rejection calibration in a receiver. A first image correction factor is acquired using a first known signal associated with a first signal band during a startup mode. The first image correction factor has a plurality of bits including most significant bits (MSBs) and least significant bits (LSBs). The LSBs of the first image correction factor are adjusted incrementally during a normal operation mode. A radio frequency (RF) signal associated with the first signal band is received using the first image correction factor during the normal operation mode.09-30-2010
20120128265METHOD AND SYSTEM UTILIZING ITERATIVE RECONSTRUCTION WITH ADAPTIVE PARAMETERS FOR COMPUTER TOMOGRAPHY (CT) IMAGES - The CT imaging system optimizes its image generation by adaptively weighting certain parameters during the iterations in an iterative reconstruction algorithm. The projection data is grouped into N subsets, and after each of the N subsets is processed by the ordered subsets simultaneous algebraic reconstruction technique (OSSART), the image undergoes total variation (TV) minimization process. During the iterative reconstruction algorithm, a combination of the parameters such as a total variation, a relaxation parameter and a step size parameter is assigned a respective value based upon the current value of the iteration.05-24-2012
20120314972RELATIONSHIP MAINTENANCE IN AN IMAGE PROCESS - In a first exemplary embodiment of the present invention, an automated, computerized method is provided for processing an image. According to a feature of the present invention, the method comprises the steps of providing an image file depicting an image, in a computer memory, generating intrinsic images corresponding to the image, and performing a relationship maintenance process to correct artifacts in the intrinsic images.12-13-2012
20120230604IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD AND PROGRAM - Disclosed herein is an image processing apparatus, including a noise detection section, a scaling section, an adjustment signal production section, and a correction section. The noise detection section is adapted to detect block noise based on an input image signal in a compression coded form and output noise information indicative of the detected block noise. The scaling section is adapted to carry out a scaling process for carrying out enlargement or reduction of an image indicated by the input image signal for the input image signal and output scaling information indicative of an enlargement ratio or a reduction ratio. The adjustment signal production section is adapted to output an adjustment signal indicative a degree of correction based on the noise information and the scaling information. The correction section is adapted to correct the image signal for which the scaling process is carried out based on the adjustment signal.09-13-2012
20120230603METHOD OF FILLING A HOLE IN A VIRTUAL VIEW IMAGE WARPED FROM A TWO-DIMENSIONAL IMAGE - In a method of filling a hole in a virtual view image warped from a two-dimensional image, the hole is detected to determine the number of pixels in the hole and to obtain position information corresponding to the hole. For each pixel in the hole, a target image block containing at least a corresponding pixel in the hole, and search image blocks corresponding to the target image block are selected from the virtual view image. Central pixels of the search image blocks are disposed on the upside, downside, right and left of a central pixel of the target image block. Those of the search image blocks detected to be available are estimated using a predetermined estimation manner to determine one of the available search image blocks as a candidate image block. All pixels in the target image block are respectively filled with all pixel values in the candidate image block.09-13-2012
20120230602Multi-bank TDI approach for high-sensitivity scanners - An apparatus and method for acquiring image data from a scanned, multi-bank time-delay and integrate (TDI) focal plane array (FPA) detector. Specifically a method and apparatus for warping and combining sequentially-acquired image data of a scene portion from multiple TDI detector banks into a single image having improved image quality, thereby providing improved FPA sensitivity. Also, a method and apparatus for enabling sensitivity and areal rate trade-offs in a multi-bank, scanning TDI FPA based on the number of TDI banks being used for sequential imaging of the same scene portion.09-13-2012
20120170865APPARATUS AND METHOD FOR CORRECTING DISTORTION OF IMAGE - Provided are an apparatus and method for correcting distortion of an image. The method includes finding center point vectors including lens distortion center information about an image and dividing the image into at least two blocks on the basis of the center point vectors, and determining representative directions of the at least two divided blocks and removing outlier vectors not indicating the representative directions from the blocks to estimate a lens distortion center. Accordingly, accurate image correction is enabled by estimating distortion centers of images generated by devices equipped with any lens. Also, image content improving lens distortion correction performance is differentiated from image content degrading the same by picking out image content improving lens distortion center estimation performance, so that a superior image correction effect to other image correction techniques can be obtained.07-05-2012
20100021079ERROR CONCEALMENT METHOD AND DEVICE - The invention concerns a method of concealing errors in at least one part of a current image (i) a sequence of images (01-28-2010
20100008597ARTIFACT REMOVAL FROM PHASE ENCODED IMAGES - PSF coding has become well known in recent years. Although it enables significant increases in the depth of field, defocus introduces artifacts in images that are a major detraction from the final image quality. A method is described that enables the deduction or defocus and consequently the removal of these artifacts. The principle of the disclosed techniques involves iteratively adjusting the restoration algorithm according to a chosen image or artifact metric and choosing the defocus parameter that yields the image the lowest level of artifact.01-14-2010
20090060381DYNAMIC RANGE AND AMPLITUDE CONTROL FOR IMAGING - Systems and methods that enhance imaging by reducing artifacts and providing for dynamic range control. In aspects, the beam of illumination generated by a scanned beam imaging system can be modulated to offset fluctuations in the beam source. In other aspects, an image frame generated by a scanned beam imager can be used to predict whether pixels in future frames are likely to be over or under illuminated. The light source, beam of illumination and/or detectors can be adjusted on a pixel by pixel basis to compensate. In further aspects, localized gamma correction can be used to map image data to a display means. A plurality of regions are defined, such that separate gamma functions or values can be assigned to individual regions of the image.03-05-2009
20090324126IMAGE DECONVOLUTION USING COLOR PRIORS - Described are techniques for image deconvolution to deblur an image given a blur kernel. Localized color statistics derived from the image to be deblurred serve as a prior constraint during deconvolution. A pixel's color is formulated as a linear combination of the two most prevalent colors within a neighborhood of the pixel. This may be repeated for many or all pixels in an image. The linear combinations of the pixels serve as a two-color prior for deconvolving the blurred image. The two-color prior is responsive to the content of the image and it may decouple edge sharpness from edge strength.12-31-2009
20120263395METHOD AND SYSTEM FOR REDUCING SPECKLES IN A CAPTURED IMAGE - A method for reducing specular reflection in an image. The method includes capturing a first exposure of a scan surface using a first of a plurality of light sources, capturing a second exposure of a scan surface using a second of a plurality of light sources, determining which pixels captured by the light sources are speckles, and replacing a value of at least one speckle in the image with a different pixel value.10-18-2012
20090016639IMAGE PROCESSING METHOD, APPARATUS, RECORDING MEDIUM, AND IMAGE PICKUP APPARATUS - The noise reduction process is appropriately changed according to a proportion of the facial region in an angle of view, thereby minimizing deterioration of background resolution as well as removing wrinkles and blemishes in the facial region.01-15-2009
20110038559CYCLIC NOISE REMOVAL IN BOREHOLE IMAGING - A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) transform (e.g., using a discrete cosine transform). The cyclic noise components (peaks) are removed from the transformed image which is then inverse transformed back into the spatial domain using an inverse 2-D transform to obtain a corrected image. An automated method enables the cyclic peaks to be identified and removed from the borehole image via downhole processing.02-17-2011
20080298717Device of Processing Dead Pixel - A dead pixel processing device is disclosed. The dead pixel processing device separates an inputted Bayer pattern image into corresponding component data; calculates the distribution (pattern) of pixels based on the median of each data; calculates a comparing value based on a component having a center pixel; outputs an external flag which informs whether there are a dead pixel and/or a hot pixel by using the comparing value; compares the values of the center pixel and adjacent pixels in the component having the center pixel; calculates a measuring value based on the center pixel; outputs an internal flag by using the measuring value; and corrects the dead pixel or the hot pixel. With the present invention, an image can be corrected by detecting a corresponding dead pixel and hot pixel.12-04-2008
20080298716Solid-State Imaging Device and Pixel Correction Method - A solid-state imaging device capable of correcting defective pixel signals to improve image quality. A line memory provides a value of a pixel currently selected for correction, together with values of its surrounding pixels. The surrounding pixels include corrected pixels preceding the selected pixel and uncorrected pixels succeeding the selected pixel. An extreme value remover removes effectively a maximum and minimum pixel values from the values of the corrected pixels read out of the line memory. An average calculator calculates an average value of the remaining uncorrected pixels and the corrected pixels read out of the line memory. A comparison processor compares the value of the selected pixel with the average value. If their difference exceeds a predetermined threshold, the comparison processor replaces the value of the selected pixel with the average value.12-04-2008
20110235943DRAWING DEVICE OF MOVE-TARGET IMAGE AND DISPLAY SYSTEM FOR VEHICLE - Afterimages of a move-target image which is moved at high speed are reduced even if a display unit with slow response characteristics is used. A drawing device for continuously drawing a move-target image as a moving picture on a display image displayed on a display unit includes: a drawing position identification unit which identifies a current drawing position at which the move-target image is drawn on the display screen; a past drawing position storage unit in which is stored a prescribed number of past drawing positions where the move-target image is drawn previously; an afterimage-reducing region detection unit which detects an afterimage-reducing region of the move-target image, the afterimage reducing region extending from the current drawing position to any one of the past drawing positions; an afterimage-reducing image drawing unit which draws an afterimage-reducing image in the afterimage reducing region; and a move-target image drawing unit which draws the move-target image at the current drawing position.09-29-2011
20110235942IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM - An image processing apparatus includes: a motion prediction processing unit detecting an inter-image motion between a standard image and a reference image; a motion compensation processing unit generating a motion-compensated image by moving the reference image so as to be aligned with the standard image in a pixel position; an addition processing unit generating a noise-reduced image from which noise of the standard image is reduced; and an addition determination unit calculating an addition weight of the motion-compensated image. The addition determination unit includes a first motion region detection unit calculating a motion region determination value, a second motion region detection unit calculating a motion region determination value, a control map generation unit selecting and outputting one of two motion region determination values, a noise determination table generation unit generating or correcting a noise determination table, and an addition determination processing execution unit determining the addition weight.09-29-2011
20110235941APPARATUS AND METHOD FOR REDUCING IMAGE NOISE - A spatial noise reducing section 09-29-2011
20110235940TRANSIENT PIXEL DEFECT DETECTION AND CORRECTION - A method of processing images produced by an imaging system includes detecting transient defects by comparing the value of a selected pixel with values of a plurality of the neighboring pixels, excluding known defective pixels. The value of the selected pixel may be compared with the maximal or minimal value of the neighboring pixels, and if the comparison shows that the value of the selected pixel exceeds the maximal or minimal value by a predetermined value, then the pixel may be identified as producing transient defect. Alternatively, the value of the selected pixel may be compared with the median value of the neighboring pixels, and if the comparison shows that the value of the selected pixel deviates the median value by a predetermined value, then the pixel may be identified as producing transient defect.09-29-2011
20080304764REMOVAL OF IMAGE ARTIFACTS FROM SENSOR DUST - Removal of the effects of dust or other impurities on image data is described. In one example, a model of artifact formation from sensor dust is determined. From the model of artifact formation, contextual information in the image and a color consistency constraint may be applied on the dust to remove the dust artifacts. Artifacts may also be removed from multiple images from the same or different cameras or camera settings.12-11-2008
20120321216Straightening Out Distorted Perspective on Images - Methods for correcting distortions in an image including text, or an image of a page that includes text, are disclosed. The methods include identifying reliable and substantially straight lines from elements in the image. Vanishing points are determined from the lines. Parameters associated with a rectangle are determined. A coordinate conversion is performed.12-20-2012
20120288215IMAGE PROCESSING DEVICE AND PROCESSING METHOD THEREOF - An image processing device and the processing method thereof are provided. The device includes an image correcting module, an object-motion detection module and an image blending module. The image correcting module estimates a plurality of local motions of the non-selected images relative to the target image and a plurality of global motions, and performs a plurality of motion corrections to generate a plurality of corrected images. The object-motion detection module judges whether or not the difference between each of the local motions and the corresponding global motion is greater than a threshold value to generate a plurality of object-motion indicators. The image blending module performs an arithmetic operation on each pixel of the target image and each pixel of the corrected images according to the object-motion indicators so as to generate a super-resolution image.11-15-2012
20120288214Coherence Switching - A first image may be obtained using locked (relative) phases. A second image may be obtained using unlocked (e.g., randomized) phases. Data of the second image may be subtracted from data of the first image. The result may then undergo further processing, if desired, e.g., to further enhance the resulting image.11-15-2012
20130011077IMAGE PROCESSING APPARATUS AND METHOD - According to one embodiment, an image processing apparatus includes first and second computation portions, a selection portion, a projection portion, and a weighted averaging portion. The first computation portion is configured to obtain magnitudes of correlations between a first vector and plural basis vectors. The selection portion is configured to select basis vectors from the plural basis vectors. The projection portion is configured to select a second region, obtain a first projection vector by projecting the first vector onto a subspace formed by the selected basis vectors and obtain a second projection vector for each second region by projecting a second vector onto the subspace. The second computation portion is configured to compute a distance between the first and second projection vectors. The weighted averaging portion is configured to weighted average a pixel value of the second pixel to obtain an output pixel value of a first pixel.01-10-2013
20130016918Wide-Angle Lens Image CorrectionAANM Haribhatt; AkshayakumarAACI BangaloreAACO INAAGP Haribhatt; Akshayakumar Bangalore INAANM Vijayakumar; RajeshAACI BangaloreAACO INAAGP Vijayakumar; Rajesh Bangalore IN - A system for correcting distortion effects in a distorted image includes a memory controller for reading pixels (corresponding to a subset region in a destination image) of the distorted image from a system memory to local memory. A look-up table stores an offset and interpolation weight for each pixel, and an ALU computes, using stored values only in the local memory, values of each of the pixels in the region in the destination image.01-17-2013
20110158554IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM - An apparatus according to the present invention includes a detection unit configured to detect a noise based on pixel values of a neighboring pixel group having an interval of n pixel (s) (n is an integer of 1 or more) from a target pixel and a range of m pixel(s) (m is an integer of 1 or more) and a pixel value of the target pixel, and a replacement unit configured to replace the pixel value of the target pixel with an average value of the pixel values of the neighboring pixel group if the noise is detected.06-30-2011
20110158553PORTABLE DEVICE HAVING VIBRATION REDUCTION FUNCTION AND VIBRATION REDUCTION METHODE THEREOF - A portable device includes a central processing unit, a vibration sensor to sense vibration of the portable device, an image processing unit to process image data, and a memory unit storing a vibration reduction module. The vibration reduction module includes a vibration signal collecting sub-module to collect a vibration signal of the portable device, a filter sub-module to filter noise of the vibration signal, a vibration offset calculating sub-module to calculate a vibration offset of the portable device according to the filtered vibration signal, a vibration compensation calculating sub-module to calculate a compensation value corresponding to the vibration offset of the portable device, and an image controlling sub-module to control images of the portable device to move a distance which is equal to the compensation value via the image processing unit, to make the images of the portable device keep a fixed position.06-30-2011
20080232711Two Stage Detection for Photographic Eye Artifacts - The detection of red-eye defects is enhanced in digital images for embedded image acquisition and processing systems. A two-stage redeye filtering system includes a speed optimized filter that performs initial segmentation of candidate redeye regions and optionally applies a speed-optimized set of falsing/verification filters to determine a first set of confirmed redeye regions for correction. Some of the candidate regions which are rejected during the first stage are recorded and re-analyzed during a second stage by an alternative set of analysis-optimized filters to determine a second set of confirmed redeye regions.09-25-2008
20080232710Varying The Exposure Of A Digital Image By Region - Methods and apparatus for creating a digital image in which exposure varies by region of the image are described. The image may be created from first and second images. In one embodiment, a method comprises writing pixels of the first image that are within a first region of a space to pixel locations in a memory that correspond with coordinates of the respective first image pixels. A replacement pixel is generated by combining a pixel of the first image that is within the first region with a spatially corresponding pixel of a second image. The replacement pixel is written to a pixel location in the memory that corresponds with the coordinates of the replacement pixel. Pixels of the first image that are within a second region of the space may be written to pixel locations in the memory that correspond with the coordinates of the respective first image pixels.09-25-2008
20130142450REDUCING MOIRE PATTERNS - Among other disclosed subject matter, a computer-implemented method includes receiving illustrated content. The illustrated content includes half-tone content. The method includes blurring at least part of the illustrated content. The blurring is performed according to a blur radius. The method includes downscaling the blurred illustrated content to an output size.06-06-2013
20130136377METHOD AND APPARATUS FOR BEAUTIFYING HANDWRITTEN INPUT - A method for beautifying handwritten input, including collecting handwriting data input by a user; analyzing the handwriting data to get handwriting information, determining a corresponding pen tip model according to the handwriting information, and beautifying the user's handwriting with the pen tip model; and outputting the beautified handwriting. An apparatus for beautifying handwritten input determines a pen tip model that matches a user's handwriting by acquiring handwriting information input by the user, and carries out real-time beautification of the user's handwriting through the pen tip model. Changes of the user's handwriting are quickly captured to provide the user to receive timely feedback and an excellent user experience.05-30-2013
20130101233INFORMATION PROCESSING APPARATUS, LINE NOISE REDUCTION PROCESSING METHOD, AND COMPUTER-READABLE STORAGE MEDIUM - An information processing apparatus performs first filter processing to combine pixels of an image along a predetermined direction. A line noise image is extracted by executing second filter processing for the processed image along a direction different from the predetermined direction. The extracted line noise image is subtracted from the image to acquire a line noise reduced image.04-25-2013
20130129251IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM - An image processing apparatus includes an image acquiring unit that acquires an image; an information acquiring unit that acquires image information indicative of a content of the image; and a correcting unit that corrects the image based on the image information such that some of warping of the image is left.05-23-2013
20130156340Image Filtering by Sparse Reconstruction on Affinity Net - A method reduces multiplicative and additive noise in image pixels by clustering similar patches of the pixels into clusters. The clusters form nodes in an affinity net of nodes and vertices. From each cluster, a dictionary is learned by a sparse combination of corresponding atoms in the dictionaries. The patches are aggregated collaboratively using the dictionaries to construct a denoised image.06-20-2013
20130148910METHOD, APPARATUS AND SYSTEM FOR IDENTIFYING DISTRACTING ELEMENTS IN AN IMAGE - A method of identifying a distracting element in an image (e.g., 06-13-2013
20090175557SYSTEM AND METHOD FOR REDUCTION OF SPECKLE NOISE IN AN IMAGE - The present invention includes methods for the reduction of speckle noise in an image and methods for segmenting an image. Each of the methods disclosed herein includes steps for analyzing the uniformity of a pixel within a plurality of pixels forming a portion of the image and, based on the uniformity of the intensity of the plurality of pixels, adjusting and/or replacing the pixel in order to produce a speckle-noise reduced image, a segmented image, or a segmented and speckle-noise reduced image. The methods of the present invention can employ for example conditional probability density functions, nonlinear estimator functions, convex energy functions and simulated annealing algorithms in the performance of their respective steps.07-09-2009
20130156342No-Reference Spatial Aliasing Measure for Digital Image Resizing - A method includes identifying an area in an image that is associated with strong directional energy. The method further includes determining a first estimate of signal energy for the area and a second estimate of aliasing energy for the area. The method further includes estimating a severity of an aliasing error of the image based on the first estimate and the second estimate.06-20-2013
20130182971Spatiotemporal Metrics for Rate Distortion Optimization - Spatial and temporal metrics are computed for a picture or regions within a picture to determine the impact of coding and quantization on the quality of an encoded picture. Prediction mode decisions and quantization optimization algorithms are used to create a compressed bit stream that minimizes coding artifacts. Pre-processing techniques are also used to suppress coding artifacts that reduce picture quality.07-18-2013
20110311159IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND RECORDING MEDIUM RECORDING A PROGRAM - An image processing apparatus includes an obtainment section to obtain a face image; an area specifying section to specify a set of a plurality of corresponding areas in the face image obtained by the obtainment section; and a correction section to generate a face image in which one area of the plurality of corresponding areas of the face image is used as a reference to correct another area.12-22-2011
20110311158MOTION ARTIFACT REMOVAL - Systems, methods, and other embodiments associated with removing motion artifacts from MR images are described. One example method includes controlling an MRI apparatus to acquire a fully sampled, centric-ordered, non-interleaved, data set from an object to be imaged and controlling a Generalized Auto-Calibrating Partially Parallel Acquisition (GRAPPA) logic to produce a GRAPPA duplicate of a single partition through the data set. The method also includes computing, from the GRAPPA duplicate, a GRAPPA navigator for a phase encoding (PE) line in the single partition and computing an error between the PE line in the single partition and a corresponding PE line in the GRAPPA duplicate using the GRAPPA navigator. The method also includes selectively replacing data in the PE line in the single partition with replacement data upon determining that the error exceeds a threshold. The method may include reconstructing an MR image based, at least in part, on the single partition.12-22-2011
20120027320IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing apparatus may include a distortion correcting unit performing distortion correction processing on input image data to generate output image data. The distortion correcting unit may include a distortion correction coordinate transforming unit that obtains coordinates indicating a position of the input image data corresponding to a position of the output image data, a range calculating unit that calculates a range of the input image data to be used in the distortion correction processing based on the coordinates of the input image data obtained by the distortion correction coordinate transforming unit, a correction information storage unit, an input image data storage unit, and an interpolation calculating unit that checks an amount of the input image data stored in the input image data storage unit based on the information regarding the range of the input image data.02-02-2012
20130208995Image Defect Map Creation Using Batches of Digital Images - A method of automatically determining a need to service a digital image acquisition system including a digital camera with a lens assembly includes analyzing pixels within one or more acquired digital images according to probability determinations that such pixels correspond to blemish artifacts. It is automatically determined whether a threshold distribution of blemish artifacts is present within one or more of the digital images. A need for service is indicated when at least the threshold distribution is determined to be present.08-15-2013

Patent applications in class Artifact removal or suppression (e.g., distortion correction)