Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Noise or undesired signal reduction

Subclass of:

348 - Television

348571000 - IMAGE SIGNAL PROCESSING CIRCUITRY SPECIFIC TO TELEVISION

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
348608000 Processing at encoder or transmitter (e.g., pre-correction) 21
348624000 For color television 20
348618000 For removal of low amplitude random noise (e.g., variable bandwidth) 8
348614000 Ghost elimination (e.g., multipath) 7
348616000 Dropout compensator (e.g., replacement type) 2
20120140120APPARATUS AND METHOD FOR REDUCING DISTORTION IN IMAGES - A system that incorporates teachings of the present disclosure may include, for example, a set-top box having a processor operable to receive video content from a multimedia source, to detect at least one frame in the video content affected by a high intensity burst of light, and to determine a chrominance reference from frames in the video content unaffected by the high intensity burst of light. The processor is also operable to modify chrominance in the at least one frame according to the chrominance reference without altering spatial characteristics of objects in the at least one frame, to replace the at least one frame in the video content with the modified at least one frame to create updated video content, and to present the updated video content at a presentation device. Other embodiments are disclosed.06-07-2012
20110211125MOTION COMPENSATED INTERPOLATION SYSTEM USING COMBINATION OF FULL AND INTERMEDIATE FRAME OCCLUSION - In one embodiment of the present invention, motion compensated interpolation is performed by locating full frame conceal and reveal areas, determining intermediate frame occlusion areas of an interpolated frame of the displayable output by locating intermediate frame conceal areas based on projected locations of pixels within the full frame conceal areas using primary forward motion vectors and information about a time slot for the interpolated frame, and by locating intermediate frame reveal areas based on projected locations of pixels within the full frame reveal areas using primary backward motion vectors and information about the time slot for the interpolated frame. The intermediate frame conceal areas are then modified by projecting locations of pixels using secondary forward motion vectors and the intermediate frame reveal areas are modified by projecting locations of pixels using secondary backward motion vectors.09-01-2011
348615000 Blackspot or shading correction (e.g., corrects for fixed pattern defects) 1
20110075038LIGHT EMITTING DEVICE AND PRODUCTION SYSTEM OF THE SAME - To provide a light emitting device without nonuniformity of luminance, a correcting circuit for correcting a video signal supplied to each pixel to a light emitting device. The correcting circuit is stored with data of a dispersion of a characteristic of a driving TFT among pixels and data of a change over time of luminance of a light emitting element. Further, by correcting a video signal inputted to the light emitting device in conformity with a characteristic of the driving TFT of each pixel and a degree of a deterioration of the light emitting element based on the over-described two data, nonuniformity of luminance caused by a deterioration of an electroluminescent layer and nonuniformity of luminance caused by dispersion of a characteristic of the driving TFT are restrained.03-31-2011
Entries
DocumentTitleDate
20100073569METHOD AND SYSTEM FOR VIDEO NOISE REDUCTION BY BLENDING FILTERING OUTPUTS - Noise-reduced pixels may be generated using outputs of filtering via a first filter and/or a second filter, and/or a blend of both outputs. Blending a current pixel and an output of filtering of current pixel via the first filter may generate a first blended current pixel. Filtering via the first filter may be based on the current pixel, a previous collocated pixel, and a next collocated pixel. Blending the current pixel and an output of filtering of current pixel via the second filter may generate a second blended current pixel. Filtering via the second filter may be based on the current pixel and a collocated pixel of the previous second blended video image or of the previous filtered output video image. Blending the first blended current pixel and the second blended current pixel using an adaptive blending factor may dynamically generate a filtered output pixel.03-25-2010
20130038796Error concealment method for wireless communications - The invention relates to a method of reconstructing pixel values of a video frame for concealing corrupted pixel values. The method comprising receiving, by a receiving unit, of a signal from a communication channel and delivering by the receiving unit of video packets comprising pixel values possibly corrupted with errors; associating confidence levels with pixel values comprised in the video packets as delivered by the receiving unit; and reconstructing pixel values usable for display from the received pixel values, wherein a reconstructed value for a given pixel is obtained from the received values of a set of pixels, including the given pixel, weighted by their associated confidence levels.02-14-2013
20100045870ADAPTIVE NOISE REDUCTION SYSTEM - A noise reduction system is provided. In a temporal module, a temporal characteristic detector detects a temporal characteristic of the input image based on the input image and a reference image. A temporal filter performs temporal noise reduction on the input image based on the reference image and the temporal characteristic to generate a temporal filtered image. A temporal selector selects the temporal filtered image or the input image as a preliminary output accordingly. In a spatial module, a spatial characteristic of the input image is detected. A spatial filter performs spatial noise reduction on the input image based on the preliminary output and the spatial characteristic to generate a spatial filtered image. A spatial selector selects the spatial filtered image or the preliminary output as the output image based on the temporal or spatial characteristics.02-25-2010
20100328536Digital Signal Processor (DSP) Architecture For A Hybrid Television Tuner - According to one aspect, a mixed-signal tuner for analog and digital TV reception incorporates a demodulator for analog TV, employing various features for resolving limitations of the analog circuitry and for achieving compatibility with various global TV standards. Such features, which may be present in one or more embodiments, include the use of a variable sample rate in all digital clocks for frequency planning, and use of a microcontroller (MCU) to control various circuitry of the tuner.12-30-2010
20130208189DISPLAY OF VIDEO WITH MOTION - A method of displaying a video of a scene on a display with reduced motion blur includes: providing the video of a scene having first subframes that have a first input rate and second subframes that have a second input rate, wherein the first subframes correspond to a first region of the display and the second subframes correspond to a second region of the display; and selectively providing the first and second subframes to corresponding regions in the display, and providing the first region of the display with a first update rate and the second region of the display with a second update rate, wherein the first update rate is greater than the second update rate, so that the displayed image has reduced motion blur.08-15-2013
20130057768IMAGE PROCESSING SYSTEM AND DISPLAY DEVICE - An image processing system for processing a target pixel to be processed, which target pixel corresponds to inputted image data, a plurality of pixels including the target pixel being arranged in a matrix manner, includes an NR circuit (03-07-2013
20090040386Image processing method - An image processing method adopted to remove noise present in an image, includes: an image input step in which an original image constituted of a plurality of pixels is input; a multiple resolution image generation step in which a plurality of low-frequency images with resolutions decreasing in sequence and a plurality of high-frequency images with the resolutions decreasing in sequence are generated by decomposing the input original image; a noise removal processing step in which noise removal processing is individually executed on the low-frequency images and the high-frequency images; and an image acquisition step in which a noise-free image of the original image is obtained based upon both the low-frequency images and the high-frequency images having undergone the noise removal processing.02-12-2009
20130135530SYSTEMS AND METHODS FOR TRIGGERING AN OUT OF FOCUS ALERT - In order to trigger an out of focus alert when the focus level of a video frame meets a focus criteria, a method is performed including the operations of: receiving a video frame, partitioning the video frame into a plurality of blocks, calculating an array of discrete cosign transformation (DCT) coefficients for at least one of the plurality of blocks using a DCT, classifying each of the at least one of the plurality of blocks based on the array of DCT coefficients for that block, calculating a focus level of the video frame from the block classifications, and triggering an out of focus alert if the focus level meets a focus criteria.05-30-2013
20090268095IMAGE DISPLAY APPARATUS AND IMAGE DISTORTION CORRECTION METHOD OF THE SAME - An image display apparatus includes a projector 10-29-2009
20130063666IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD FOR PERFORMING CORRECTION PROCESSING ON INPUT VIDEO - An image processing apparatus according to the present invention extracts a characteristic value of a luminance in relation to respective fields of an input video, and determines the presence of a scene change between adjacent fields. A gamma curve is then generated on the basis of the magnitude of the characteristic value. When a difference in the characteristic value between fields is larger than a predetermined value and a scene change does not exist, the gamma curve to be applied to a subsequent field is modified such that the correction characteristic of the gamma curve does not vary rapidly. The luminance is then corrected using the modified gamma curve.03-14-2013
20130128123METHOD FOR REDUCING IMAGE OR VIDEO NOISE - There is described a Minimal Iterativity Anisotropic Diffusion (MIAD) approach that estimates the required number of iterations N as a function of the image structure-under-noise ρ and the bound of the noise η. The time step λ is related to the image structure-under-noise ρ and to the bound of noise λ. The stopping time is calculated using T=λ·N, and the edge strength σ is determined as a function of T, η, and ρ.05-23-2013
20110032427SYSTEM AND METHOD FOR IMPROVING THE QUALITY OF HALFTONE VIDEO USING A FIXED THRESHOLD - A system and method for processing video data are disclosed. In one aspect, a method includes generating halftone data for a first video frame and generating halftone data for a second video frame. The method further includes, to reduce at least one visual artifact, selectively copying the halftone data for the first video frame into the halftone data for the second video frame, the selective copying being based upon a comparison between a predetermined fixed threshold and the difference in the human visual system model-based perceptual error of the originally generated halftone data for the second video frame and the human visual system model-based perceptual error of the halftone data for the second video frame after the copying is done.02-10-2011
20120224105VIDEO DISPLAY APPARATUS AND VIDEO PROCESSING METHOD - According to one embodiment, a video display apparatus includes a video processing module and a controller. The video processing module is configured to perform signal processing on a video signal to generate a display video signal, and to output the display video signal to a display module. The controller is configured to turn on or off short delay processing mode, and to control the video processing module so that a delay time of the display video signal from the video signal becomes approximately 12 to 17 ms at a minimum when the short delay processing mode is on.09-06-2012
20100238354METHOD AND SYSTEM FOR ADAPTIVE NOISE REDUCTION FILTERING - Embodiments of the invention are directed to a system and method for noise filtering in a video signal. The method includes dividing at least a portion of a frame into pixel groups and identifying a group as a first-type pixel group, possibly relating to a large change such as motion or light, if a difference parameter relating to the difference between the pixel group and a respective pixel group in a previous frame is larger than a threshold. The method further includes, identifying one or more of the first-type pixel groups as isolated pixel groups, if all the neighbors of the group are pixel groups with a difference parameter smaller than the threshold. The isolated pixel groups are redefined as pixel groups containing noise. The method further includes adapting the threshold based on the number of isolated pixel groups identified.09-23-2010
20090273716Method to Reduce Contour Artifacts on Recursive Temporal Filters - A method and encoding system for reducing artifacts in a digital video sequence of image frames. The method acquires a current frame of the digital video sequence, and retrieves a previous frame of the digital video sequence from a frame delay. The method applies a recursive temporal filter to the current frame and the previous frame to generate a filtered frame. The method then applies a mixer to the current frame and the filtered frame to generate an output frame. The method stores the output frame in the frame delay.11-05-2009
20110285909DISPLAY APPARATUS AND CONTROL METHOD THEREOF - The display apparatus includes a video receiver which receives a video signal from an external source; a video processor which processes the video signal received in the video receiver to be displayable on a display unit; and a noise processor which determines frequency position information of an interference signal component from a frequency domain of sync sections extracted from the video signal with regard to the interference signal component mixed in a predetermined frequency band of the video signal and causing noise in a display image displayed on the display unit, and compensates the display image based on the determined frequency position information.11-24-2011
20110298984PREPROCESSING OF INTERLACED VIDEO WITH OVERLAPPED 3D TRANSFORMS - In one method embodiment, partitioning a block matched reference frame into plural n×m non-overlapping pixel superblocks, where n and m are non-negative integer numbers; designating each of the n×m pixel superblocks as field or frame; and field processing by overlapped block processing logic two n×n blocks of an n×m overlapped superblock if one of first plural n×m superblocks intersected by the overlapped superblock has a field designation, otherwise frame processing, by the overlapped block processing logic, the two n×n blocks of the overlapped superblock.12-08-2011
20110292289IMAGE DISPLAY DEVICE AND IMAGE DISPLAY METHOD - A spatial maximum value filter generates a low frequency video signal in an intermittent frame by removing high frequency components from a video signal in the intermittent frame. A division signal extraction unit calculates a ratio of a signal value of a video signal in an acquired frame to a signal value of a low frequency video signal in an intermittent frame closest to the acquired frame, and generates a high frequency video signal having the calculated ratio as a signal value. A signal adjustment unit calculates a ratio of a signal value of the video signal in the intermittent frame to a signal value of a high frequency video signal in the intermittent frame, and generates an adjusted low frequency video signal having the calculated ratio as a signal value.12-01-2011
20110292290FREQUENCY CONVERSION CIRCUIT, FREQUENCY CONVERSION METHOD, AND ELECTRONIC APPARATUS - A frequency conversion circuit includes: a phase shifter that generates a first signal and a second signal having a phase difference of 90 degrees from the first signal; a first mixer that multiplies the first signal by a local oscillation signal; a second mixer that multiplies the second signal by the local oscillation signal; a first filter that extracts a signal component of an intermediate frequency from the output signal of the first mixer; a second filter that extracts a signal component of the intermediate frequency from the output signal of the second mixer; an image signal remover that removes an image signal from the output signals of the first and second filters; and a phase shift quantity adjuster that adjusts a phase shift quantity of the signal in the phase shifter based on the output signal of the image signal remover at a predetermined time.12-01-2011
20100201884DISPLAY UNIT - A receiver receives differential analog video signals from a long distance transmission line and converts them into unbalanced analog video signals to output to an analog video signal line that is internal wiring. A frequency response characteristics corrector inside the receiver corrects the frequency response characteristics attenuated mainly by the long distance transmission line, and a delay corrector corrects differences of propagation delay. A transmitter receives the unbalanced analog video signals form the analog video signal line and converts them into balanced differential analog video signals to transmit to a long distance transmission line as differential analog video signals. A video output circuit outputs the unbalanced analog video signals or unbalanced digital video signals to a video signal line as unbalanced video signals.08-12-2010
20100201883INTEGRATED CIRCUIT HAVING A CIRCUIT FOR AND METHOD OF PROVIDING INTENSITY CORRECTION FOR A VIDEO - A method of providing intensity correction for a video is disclosed. The method may comprise evaluating a portion of a frame of the video; determining a difference in intensity of a current block of the frame with the corresponding block of the previous frame; correcting all blocks of the frame with local intensity correction if a first set of parameters is met; and correcting the current block of the frame with both global intensity correction and local intensity correction if the first set of parameters is not met. An integrated circuit having a circuit for providing intensity correction for a video is also disclosed.08-12-2010
20110141369VIDEO SIGNAL PROCESSING DEVICE, VIDEO SIGNAL PROCESSING METHOD, AND NON-TRANSITORY COMPUTER READABLE MEDIUM STORING IMAGE PROCESSING PROGRAM - A video signal processing device includes: a correction unit which performs correction such that when a first frame to be displayed at a first time includes a pixel different from a pixel to be included in the first frame, the pixel different from the pixel to be included in the first frame is corrected to the pixel to be included in the first frame, and when a second frame to be displayed at a second time prior to the first time includes a pixel different from a pixel to be included in the second frame, the pixel different from the pixel to be included in the second frame is corrected to the pixel to be included in the second frame; and a motion compensation unit which generates an interpolation frame to be displayed at a time between the first and second times by referring to the first and second frames.06-16-2011
20100201882MOTION JUDDER CANCELLATION IN IMAGE SEQUENCES - In a device for processing baseband signal images (BS), a film detector determines whether a same baseband signal image includes both information from a film image and information from a video source image, information from one film image being present in at least two baseband signal images while information from one video source image is present in only one baseband signal image. A processing unit processing the baseband signal images in such a manner that in the presence of both information from the film image and information from the video source image in the same baseband signal image, for each film image only one of the at least two baseband signal images is used to obtain a display signal image (DS).08-12-2010
20110037898De-ring system and method for reducing the overshooting and undershooting of video signal in a scaler - In a de-ring system for reducing the overshooting and undershooting of a video signal after scaling on the horizontal and the vertical direction in a scaler, a region judgment device receives the video signal and detects the attributes of the region in the video signal. When the region in the video signal is an edge and flat area, the de-ring system adjusts the weighting coefficient to increase the low frequency components for reducing the overshooting and undershooting of the video signal. When the region in the video signal is neither an edge nor an edge and flat area, the de-ring system adjusts the weighting coefficient to increase the high frequency components for preserving the high frequency components of the video signal, so as to dramatically reduce the overshooting and undershooting of a video signal.02-17-2011
20090002557FAST RESPONSE DISCRETE TIME INFINITE IMPULSE RESPONSE (IIR) FILTER - An infinite impulse response (IIR) filter provides fast response time without significant effects of ringing or overshoot. In a first step, an input signal is received and a preliminary output signal is computed based upon at least the input signal and a prior output signal. The preliminary output signal is compared to the input signal, and if the preliminary output signal and the input signal differ by more than a significant amount, the input signal is provided as the output signal. Otherwise, the preliminary output signal can be provided as the output signal. Such a filter be readily implemented in software or other programmable logic, and may have particular utility in preserving the contrast in a filtered video image represented by discrete digital data within a display system.01-01-2009
20090002558THREE-FRAME MOTION ESTIMATOR FOR RESTORATION OF SINGLE FRAME DAMAGES - A method for reconstructing damaged areas in a single frame of digital motion pictures, where damaged pixels in a current frame (C) are reconstructed using motion compensation based on a motion estimator. The motion estimator comprises a motion vector selection using a combined measure for evaluating linear motion over three frames, going from a previous frame (P) to a next frame (N) through the current frame (C). Compared to a virtual frame motion estimator, the method according to the invention achieves better stability and confidence in the motion search. Compared to the use of a standard motion estimators, the method according to the invention has a better way of finding the correct motion for the damaged areas whether unknown or known, while still being able to find the correct motion for those parts which are not damaged.01-01-2009
20100091194NOISE REDUCTION METHOD AND UNIT FOR AN IMAGE FRAME - A method and unit for noise reduction in a current image frame, wherein the current image frame is a part of a sequence of image frames. The method compares a current pixel value of a pixel within the current image frame with a corresponding pixel value of the pixel in at least one adjacent image frame, and determines a piled-up value of the current pixel value and the corresponding pixel value if a pixel difference between the current pixel value and the corresponding pixel value is below a pixel threshold, wherein the pixel threshold depends on the corresponding pixel value and/or the current pixel value. The method and unit can be applied for block and color processing as well.04-15-2010
20100091195De-ringing Device and Method - A de-ringing device and a method thereof are provided. The de-ringing device, operative with a lookup table for storing a plurality of intensity coefficients, comprises a buffer and a de-ringing intensity determining unit. The buffer stores an input pixel sequence. The lookup table stores a plurality of intensity coefficients. The de-ringing intensity determining unit, coupled to the buffer and the lookup table, detects a plurality of pixel complexity of a first pixel group and a second pixel group associated with a target pixel in the pixel sequence, and looks up the lookup table according to the pixel complexities of the first pixel group and the second pixel group to output a de-ring intensity coefficient for the target pixel.04-15-2010
20100265402VIDEO SIGNAL PROCESSING - A video signal processing apparatus for processing a video signal comprises a receive unit (10-21-2010
20110176059Method and Apparatus for Content Adaptive Spatial-Temporal Motion Adaptive Noise Reduction - According to one embodiment, a method is disclosed. The method includes performing a local content analysis on video data to classify pixels into singular pixels, motion pixels and static pixels.07-21-2011
20120212674Analog TV Signal Receiving Circuit For Reducing Signal Distortion Using Equalizer Configuring Method - An analog television (TV) signal receiving circuit and method and an associated equalizer coefficient configuration apparatus and method are disclosed for correcting a distortion problem occurred in a reception process of an analog TV signal by configuring an equalizer in the analog TV signal receiving circuit. The analog TV signal receiving TV includes a tuner, an analog-to-digital converter (ADC), and a demodulator. The tuner receives an analog radio-frequency (RF) TV signal to generate an analog frequency down conversion signal. The ADC generates a digital frequency down conversion signal according to the analog frequency down conversion signal. The demodulator includes a front-end circuit for generating a digital demodulated signal according to the digital frequency down conversion signal, and an equalizer for generating a digital receiving signal according to the digital demodulated signal. The equalizer includes a plurality of correction coefficients that are generated according to a predetermined rule.08-23-2012
20100085486IMAGE PROCESSING APPARATUS AND METHOD - An image processing apparatus includes a pixel difference calculator, a summing unit, a determining unit, and an output unit. The pixel difference calculator receives a present image having first pixels and a previous image having second pixels, calculates pixel differences between corresponding first and second pixels, and outputs positive and negative pixel difference values. The summing unit obtains a first output value by adding up those of the positive pixel difference values and a second output value by adding up those of the negative pixel difference values. The determining unit determines a noise level of the present image from the first and second output values, and outputs a blended value. The output unit adds together weights of pixels at the same positions of the present and previous images according to the blended value to generate an output image. An image processing method is also disclosed.04-08-2010
20120033137IMAGE PROCESSING DEVICE AND METHOD AND IMAGE DISPLAY DEVICE - Motion blur at a pixel of interest in a video signal is corrected adaptively by detecting a motion vector of the pixel of interest, estimating the direction and magnitude of the motion blur from the motion vector, and filtering the video signal at the pixel of interest. The filtering process uses the pixel values of the pixels in a neighborhood of the pixel of interest, clipped so that they do not differ too greatly from the pixel value of the pixel of interest, and low-pass filtering coefficients selected according to the estimated direction and magnitude. The filtered value is used to calculate a gain factor for correcting the pixel value of the pixel of interest. The strength of the correction is adjusted according to the difference between the pixel value of the pixel of interest and the mean pixel value in its vicinity. The adjustment and clipping prevent overcorrection.02-09-2012
20090284661Noise Reducing Circuit, Noise Reducing Method, and Video Apparatus - According to one embodiment, a noise reducing circuit includes a frame memory configured to frame-delay a video signal, a first arithmetic unit configured to subtract the frame-delayed video signal given by the frame memory from the video signal to output a first frame difference signal, a first rectangular wave removing unit configured to remove a rectangular wave component from the first frame difference signal to generate a second frame difference signal, a first pulse discriminating unit configured to receive the second frame difference signal, remove a continuous pulse component from the second frame difference signal, and output a single pulse component, and a second arithmetic unit configured to subtract the single pulse component from the video signal.11-19-2009
20090284660METHOD OF DETECTING OBJECTS - The invention, at the first frame, records the background, as the threshold of detection—constant image with the predetermining minimum threshold, and with each subsequent frame, corrects the background and threshold with formulas while producing the adaptation of a renewal—constant in each pixel depending on the presence of the detected object, defines the difference between the current frame and background, compares it with the threshold, combines elements exceeding a threshold into detection zones, performs rejection of the detection zones, divides the zones in order to separate shadows, forms a tracking zone, searches already-detected segment of objects, forming clusters of the tracking zones. The coordinates of the obtained rectangles are assumed as the coordinates of the objects located in the frame.11-19-2009
20100277647NOISE DETECTION METHOD AND IMAGE PROCESSING METHOD USING THE NOISE DETECTION METHOD - An image processing method includes a difference extraction step (11-04-2010
20110205440VIDEO PROCESSING CIRCUIT, VIDEO PROCESSING METHOD, LIQUID CRYSTAL DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A video processing circuit used in a liquid crystal panel, includes: a first boundary detector that analyzes a video signal of a present frame to detect a boundary between a first pixel and a second pixel; a second boundary detector that analyzes a video signal of a frame one frame before the present frame to detect a boundary between the first pixel and the second pixel; a third boundary detector that detects a risk boundary that is determined by a tilt azimuth of the liquid crystal; and a correction portion that corrects an applied voltage to a liquid crystal device corresponding to a first pixel from the applied voltage to a liquid crystal device corresponding to the first pixel to a third voltage or higher, when the applied voltage specified by the video signal input to the first pixel is lower than the third voltage.08-25-2011
20080239153NOISE DETECTION AND ESTIMATION TECHNIQUES FOR PICTURE ENHANCEMENT - A method of filtering noise from a picture may include determining a set of pixel noise metrics for a set of selected pixels in the picture, based solely on information from the set of selected pixels in the picture. The method may also designate as valid a subset of pixel noise metrics in the set of pixel noise metrics those associated pixels are not located at an edge or are not located in a complicated area of the picture. A set of block noise metrics may be calculated from the valid subset of pixel noise metrics, and a global noise metric for the picture may be ascertained from the set of block noise metrics. The picture may be filtered using the global noise metric to generate a filtered picture.10-02-2008
20080239154NOISE REDUCTION APPARATUS AND NOISE REDUCTION METHOD - According to one embodiment, an input image signal is passed through a plurality of first high pass filters having different passing frequency band to generate level histograms. High frequency component noise reduction processing is applied to the output of one of the first high pass filters selected based on one of the generated histograms that satisfies a predetermined threshold, low frequency component noise reduction processing is applied to a result obtained by subtracting the output of the selected first high pass filter from the input image signal, and outputs obtained by both the noise reduction processing are added.10-02-2008
20110205438Method and apparatus for motion estimation and motion compensation in video image data - The present invention is related to a method and an apparatus for motion estimation and motion compensation in video image data and especially for line based field rate up-conversion motion estimation and motion compensation of video image data.08-25-2011
20090167952NOISE REDUCTION DEVICE AND NOISE REDUCTION METHOD - A frame delay module to generate a delay frame by delaying an input frame of a video signal in each frame; a first difference generate module to generate a first difference value between the delay frame and the input frame; a first line delay module to generate a line delay frame by delaying the input frame in each line; a second line delay module to generate a second line delay frame by delaying the delay frame in each line; a second difference generate module to generate a second difference value between the input frame and the line delay frame; a third difference generate module to generate a third difference value between the delay frame and the second line delay frame; a fourth difference generate module to generate a fourth difference value between the line delay frame and the second line delay frame; a first correction module to correct the input frame by using the first difference value based on a logical sum or a logical product of the third difference value and the fourth difference value; and a second correction module to correct the delay frame by using the first difference value based on a logical sum or a logical product of the second difference value and the fourth difference value, are included.07-02-2009
20090167951HISTORY-BASED SPATIO-TEMPORAL NOISE REDUCTION - Implementations of a history-based temporal motion noise filtering technique that considers the temporal smooth among multiple pictures as well as the block-based technique to estimate the noise/motion history to better reflect the spatial/temporal smoothness in the local neighborhood are provided. In particular, implementations of the per-pixel blending technique in the block-based noise measurement may be used to better manipulate pixels in both the spatial and temporal domains. A global noise detection technique may be used to estimate the occurrence and/or strength of the noise. A content adaptive spatial filtering content adaptive spatial filter based on a local edge measurement may be used to reduce picture noise as well as preserve edge sharpness. Implementations may be configured for various applications. In particular, programmability options allow users to specify the filter parameters for singularity detection, spatial-only, temporal-only and spatial-temporal filters to achieve user desirable viewing experience.07-02-2009
20090033796SYSTEMS AND METHODS FOR TRIGGERING AN OUT OF FOCUS ALERT - In order to trigger an out of focus alert when the focus level of a video frame meets a focus criteria, a method is performed including the operations of: receiving a video frame, partitioning the video frame into a plurality of blocks, calculating an array of discrete cosign transformation (DCT) coefficients for at least one of the plurality of blocks using a DCT, classifying each of the at least one of the plurality of blocks based on the array of DCT coefficients for that block, calculating a focus level of the video frame from the block classifications, and triggering an out of focus alert if the focus level meets a focus criteria.02-05-2009
20080278631NOISE REDUCTION DEVICE AND NOISE REDUCTION METHOD OF COMPRESSION CODED IMAGE - A noise reduction device includes a two-dimensional noise reducing unit for reducing noise by arithmetic processing within an image, a three-dimensional noise reducing unit for receiving the video signal from the two-dimensional noise reducing unit and reducing noise by arithmetic processing between images, a first noise reduction intensity setting unit for setting noise reduction intensity of the two-dimensional noise reducing unit, and a second noise reduction intensity setting unit for setting noise reduction intensity of the three-dimensional noise reducing unit. The second noise reduction intensity setting unit sets the noise reduction intensity of the three-dimensional noise reducing unit, so that the noise reduction intensity of the three-dimensional noise reducing unit becomes lower as the noise reduction intensity of the two-dimensional noise reducing unit becomes higher.11-13-2008
20080278630Apparatus, Method, and Program for Video Signal Processing, and Storage Medium - A video signal processing method includes the steps of processing an input video signal and outputting an output video signal, detecting a temporal feature from the input video signal, smoothing the temporal feature by filtering and outputting the smoothed temporal feature, and controlling processing performed in the processing step in accordance with the temporal feature smoothed in the smoothing step. In this method, the smoothing step switches a characteristic of the filtering in accordance with the attribute of the input video signal.11-13-2008
20080291330Advanced Noise Reduction in Digital Cameras - A noise reduction apparatus is presented that includes groups of one or more serially connected non-linear filter units. Each of the filter unit groups are driven by decimated input image data at a different level of decimation and the output of at least one of these groups serves as one of a plurality of inputs to another group driven at a different decimation level.11-27-2008
20100026897Method, Apparatus, and Computer Software for Modifying Moving Images Via Motion Compensation Vectors, Degrain/Denoise, and Superresolution - A video processing method and concomitant computer software stored on a computer-readable medium comprising receiving a video stream comprising a plurality of frames, removing via one or more GPU operations a plurality of artifacts from the video stream, outputting the video stream with the removed artifacts, and tracking artifacts between an adjacent subset of the plurality of frames prior to the removing step.02-04-2010
20080303952IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing apparatus includes a feedback unit configured to perform first nonlinear conversion of a signal obtained by subtracting a value of a subtraction image signal from that of a current-frame image signal, and to obtain the next subtraction signal by subtracting a signal obtained by performing the first nonlinearly conversion from the current-frame image signal, and a noise reduction unit configured to perform second nonlinear conversion of a signal obtained by subtracting a value of the subtraction image signal from that of the current-frame image signal, and to obtain an output image signal by subtracting a signal obtained by performing the second nonlinear from the current-frame image signal.12-11-2008
20080303951IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM - An image processing apparatus includes a noise reduction unit configured to nonlinearly convert a signal obtained by subtracting a value of a subtraction image signal, which is read from a memory, from that of a current-frame image signal, to generate a noise-reduced signal by subtracting the nonlinearly converted signal from the current-frame image signal, and to store the noise-reduced signal in the memory, a read unit configured to read the subtraction image signal from the memory at a moment between a moment, at which the subtraction image signal read from the memory is stored in the memory, and a moment at which the subtraction image signal is read from the memory, and a generation unit configured to generate an image based on the subtraction image signal read by the read unit.12-11-2008
20080303953Device and Method for Removing Grid Noise - A device and a method for removing grid noises are disclosed. The device for removing grid noises in accordance with an embodiment of the present invention calculates an average value of each line of an inputted Bayer pattern image, calculates an estimate value estimating an average of even number lines placed between the odd number lines of a Bayer pattern image and odd number lines placed between the even number lines of a Bayer pattern image, calculates a difference value between the estimate value and the average value, calculates a correction coefficient by using the difference value, and applies the correction coefficient to the Bayer pattern image and outputs a corrected Bayer pattern image.12-11-2008
20080291331Television receiver - The present invention discloses a television receiver that extracts a video signal from a received television broadcast signal and displays video on a screen based on the video signal, the television receiver comprising: a snow noise detection unit that detects snow noise of the video displayed on the screen; a brightness amplitude reduction unit that displays a translucent image to reduce brightness amplitude of the screen while displaying the snow noise if the snow noise detection unit detects the snow noise; and the brightness amplitude reduction unit that displays, on the screen, video without the translucent, if the snow noise detection unit does not detect the snow noise.11-27-2008
20080309824Image correction method - Disclosed is an image correction method of correcting an image including a number of horizontal image scan lines each corresponding to a number of pieces of image data. The method includes the following steps: segmenting each of the horizontal image scan lines into a plurality of segments according to a plurality of nodes, each of the segments having an original segment length; looking up a table to generate at least one correction parameter according to a selection signal; generating a gain value according to a control signal; correcting the original segment length to generate an adjusted segment length according to the gain value and the correction parameter; and altering positions of the plurality of nodes to correct the image according to the adjusted segment length.12-18-2008
20080303950VIDEO SIGNAL RECEIVING CIRCUIT - A circuit for reducing ground noise of video signals is provided. The circuit includes a current source, a plurality of resistors, an AC coupling circuit and a subtracting circuit. The resistors are used for outputting a first and second voltage levels corresponding to different voltages provided by the series-connected resistors. The AC coupling circuit is used for receiving a reference ground signal and coupling an AC component of the reference ground signal to generate the reference voltage level. The subtracting circuit is used for subtracting the first and second voltage levels from two video signals, respectively.12-11-2008
20100265404SYSTEM FOR REDUCING NOISE IN VIDEO PROCESSING - A system includes a data storage configured to store a model human visual system, an input module configured to receive an original picture in a video sequence and to receive a reference picture, and a processor. The processor is configured to create a pixel map of the original picture using the model human visual system. A first layer is determined from the pixel map. A weighting map is determined from a motion compensated difference between the original picture and the reference picture. A processed picture is then determined from the original picture using the weighting map and the first layer.10-21-2010
20080204600System and method for video noise reduction using an adaptive temporal method with motion detection and motion compensation - An adaptive temporal noise reduction method that adaptively combines motion adaptive filtering results and motion compensated results to reduce Gaussian additive noise in video sequences is described herein. The system determines the motion detection and motion compensation results from the current frame and the filtered previous frame. Measurements on the video are used to determine a probabilistic measure of noise that is employed to adaptively combine the motion detection and motion compensation results.08-28-2008
20080231753Noise reducer for video signals - A noise reducer for a signal determines a direction of correlation for each picture element (pixel) by calculating sums of absolute differences between a block centered on the pixel and neighboring blocks centered on surrounding pixels and choosing the direction of the neighboring block with the least sum of absolute differences. The pixel is then filtered one-dimensionally by averaging it with neighboring pixels located in the direction of correlation. This noise reduction method is simple, reliable, and avoids needless loss of detail.09-25-2008
20090180026METHOD AND APPARATUS FOR VIDEO SIGNAL PROCESSING - Systems and methods of processing a video signal are provided. A potential block boundary can be detected between a first block and a second block of a frame of the video signal, wherein the frame, the first block, and the second block each include a plurality of pixels. An offset parameter can be determined for at least one pixel of at least one of the first block and the second block. Based on the offset parameter, a boundary verification value of at least one of the first block and the second block can also be determined. Based on the boundary verification value, it can further be determined if the potential block boundary includes a block boundary.07-16-2009
20110267539Image Processor and Image Processing Method - According to one embodiment, an image processor comprises an image converter and a controller. The image converter is configured to convert a first video signal of a first resolution to a second video signal of a second resolution higher than the first resolution. The conversion is based on a parameter indicating a ratio of high-frequency component pixels of the first video signal to be interpolated and pixels forming the first video signal to be interpolated. The controller is configured to change the parameter based on a type of broadcast wave of the first video signal. The type of broadcast wave may include, but is not limited or restricted to satellite broadcasting or terrestrial broadcasting.11-03-2011
20090161016Run-Time Selection Of Video Algorithms - Most often a pleasing video scene includes a few objects of great interest shown in front of a relatively uninteresting background. These pleasing scenes can be displayed with greater clarity and realism when the most computing intensive filter algorithms are used for images or parts of images of greatest interest. Run-time selection of algorithms used in particular frames or regions of a frame optimizes the use of filter computation resources.06-25-2009
20110205439VIDEO PROCESSING CIRCUIT, VIDEO PROCESSING METHOD, LIQUID CRYSTAL DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A video processing circuit for a liquid crystal panel, includes: a boundary detecting unit which detects a boundary between a first pixel whose applied voltage specified by an input video signal is below a first voltage and a second pixel whose applied voltage is equal to or higher than a second voltage which is higher than the first voltage; and a correction unit which corrects, for at least two second pixels one of which is adjacent to the boundary detected by the boundary detecting unit on the opposite side of the first pixel and which are successive in a direction opposite to the boundary, an applied voltage to liquid crystal elements corresponding to the second pixels from the applied voltage specified by the video signal to a voltage which is equal to or higher than the first voltage and below the second voltage.08-25-2011
20130120657SYSTEM AND METHOD FOR RENDERING ANTI-ALIASED TEXT TO A VIDEO SCREEN - Text is rendered to a television screen using only the alpha channel. This is accomplished by delaying blending with underlying video until the end of the process to thereby preserve the alpha channel information. Glyphs are used to graphically represent character data in the text to be rendered. Glyphs can be stored in a character texture. In addition, the glyphs can be contained in rectangles having identifiable locations in the character texture. The rectangles can have sizes dependent upon the glyph the rectangle contains.05-16-2013
20080316363System and method for estimating noises in a video frame - A system and method for estimating noises in a frame is disclosed. A storage device is provided to store a previous frame prior to the frame. Multiple window noise estimators are provided to estimate noise between sub-regions of the frame and corresponding sub-regions of the previous frame for producing a noise estimation index and an adjusted noise estimation index for each sub-region. A comparator selects the minimum one among the adjusted noise estimation indexes and produces a corresponding window index. When the minimum adjusted noise estimation index is smaller than a threshold, a global motion detector outputs the noise index corresponding to the minimum adjusted noise estimation index for use as a noise estimation of the frame.12-25-2008
20090015720Image display control device - An image display control device is capable of performing video image correction in real time. An effective pixel evaluation area Z01-15-2009
20090015719Reducing motion blur from an image - A method for reducing blur from an image is described. The method includes accessing a blurred image, wherein the blurred image has a width and a length that can be different. The method further includes converting the blurred image into a frequency domain representation of the blurred image and determining an angle of blur from the frequency domain of the blurred image. The method further includes rotating the frequency domain representation of the blurred image by the angle of blur and determining a size of the blur from the rotated frequency domain representation of the blurred image. The method further includes determining a blur kernel associated with the blur, the blur kernel comprising the angle of blur and the size of said blur and de-convoluting the blurred image according to the blur kernel to reduce the blur.01-15-2009
20110228167IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND RECORDING MEDIUM FOR IMAGE PROCESSING PROGRAM - An object is to perform effective noise reduction and to minimize a drop in resolution. The invention includes a recording unit for recording a processing target frame image and previous and future frame images relative to the processing target frame image; a first pixel-extracting section for extracting a plurality of pixels in a prescribed region in the processing target frame image; a second pixel-extracting section for extracting a plurality of pixels in a region corresponding to the prescribed region in the previous and future frame images; a first distance calculating section for calculating temporospatial distances between a target pixel in the prescribed region and both the plurality of pixels in the prescribed region and the plurality of pixels in the region corresponding to the prescribed region; a second distance calculating section for calculating inter-pixel-value distances between the pixel value of the target pixel in the prescribed region and both pixel values of the plurality of pixels in the prescribed region and pixel values of the plurality of pixels in the region corresponding to the prescribed region; and a noise reduction section for performing noise reduction processing of the processing target frame image on the basis of the temporospatial distance and the inter-pixel-value distance.09-22-2011
20090316048Apparatus and method for image processing in spatial light modulated display systems - Embodiments of the invention provide a circuit for peaking video signals to be provided to a dynamic range limiter for displaying images on a display device. The circuit comprises a peaking filter including a filter input configured to receive a video signal. A first filter output provides a peaking signal for the video signal. A second filter output provides a peaked video signal based upon the peaking signal. The circuit further comprises a throttle circuit including a throttle input coupled to the second filter output. A throttle output provides a throttle signal based upon the peaked video signal. A scaler is coupled between the first filter output and the dynamic range limiter. The scaler is further coupled to the throttle output. The scaler adjusts the peaking signal based upon the throttle signal. Accordingly, peaking is adaptively applied to the video signal based upon the dynamic range limits of the dynamic range limiter, as well as variations in brightness of the input signal over portions of the displayed image.12-24-2009
20120105728METHODS AND APPARATUS FOR REDUCING STRUCTURED NOISE IN VIDEO - A method of operating a computer system to reduce structured noise in a video is described. Patches in a frame of a sequence of video frames are selected using a modified non-local means (NLM) search algorithm with a reduced search complexity compared to conventional NLM search algorithms. The set of spatial neighboring patches in a frame is extended to include patches in adjacent frames of the video sequence. Patches in the adjacent frames are selected based, at least in part, on a projection of a location of a pixel in the frame into the adjacent frames using a motion estimation algorithm. An average value determined from the combined set of patches is used to replace the pixel currently being processed.05-03-2012
20100177248IMAGE DISPLAYING METHOD, IMAGE DISPLAYING DEVICE, AND CONTRAST-ADJUSTING CIRCUIT FOR USE THEREWITH - A system provides an image displaying technique that provides stable high contrast even in an area having high brightness. Based on information about an average brightness level of a digital luminance signal, black-correction processing which decreases a brightness level by offsetting the brightness level to the minus side, and increase processing which increases a contrast gain within a dynamic range, are performed for an analog luminance signal or a digital luminance signal, enabling improvement in contrast even where brightness is intense.07-15-2010
20100157159Method and apparatus for processing video data of liquid crystal display device - A video processing method and apparatus for a liquid crystal display (LCD) device is disclosed. The video processing method for the LCD device includes detecting noise by comparing data of a previous frame with data of a current frame, if the noise is detected, removing the noise from the current frame data, and outputting the resultant current frame data having no noise together with the previous frame data, and comparing the previous frame data with the resultant current frame data having no noise in a lookup table, selecting overdriving data corresponding to the comparison result, and outputting the selected overdriving data.06-24-2010
20090278988Adaptive pixel-based filtering - In an implementation, a pixel is selected from a target digital image. Multiple candidate pixels, from one or more digital images, are evaluated based on values of the multiple candidate pixels. For the selected pixel, a corresponding set of pixels is determined from the multiple candidate pixels based on the evaluations of the multiple candidate pixels and on whether a predetermined threshold number of pixels have been included in the corresponding set. Further for the selected pixel, a substitute value is determined based on the values of the pixels in the corresponding set of pixels. Various implementations described provide adaptive pixel-based spatio-temporal filtering of images or video to reduce film grain or noise. Implementations may achieve an “even” amount of noise reduction at each pixel while preserving as much picture detail as possible by, for example, averaging each pixel with a constant number, N, of temporally and/or spatially correlated pixels.11-12-2009
20100165206Method and apparatus for noise reduction in video - In some embodiments, a method of processing a video sequence may include receiving an input video sequence having an input video sequence resolution, aligning images from the input video sequence, reducing noise in the aligned images, and producing an output video sequence from the reduced noise images, wherein the output video sequence has the same resolution as the input video sequence resolution. Other embodiments are disclosed and claimed.07-01-2010
20100188582DYNAMIC NOISE FILTER AND SIGMA FILTERING METHOD - A dynamic noise filter is disclosed, which includes a noise estimation circuit, a TNR filtering circuit, a SNR filtering circuit, a blending circuit and a motion estimation circuit. By performing noise estimation for each image, the invention dynamically adjusts the strengths of the TNR filter and the SNR filter as well as a blending ratio between the outputs of the TNR filter and the SNR filter, thereby obtaining the best image quality.07-29-2010
20100188583SYSTEM AND METHOD FOR VIDEO PROCESSING DEMONSTRATION - Systems and methods for processing a video signal are disclosed and may include degrading a received video signal utilizing one or more of a plurality of video signal degrading methods. The degraded video signal may be processed to generate an improved video signal. At least a portion of the degraded video signal and a corresponding portion of the improved video signal may be displayed. Random noise may be added to the received video signal to generate the degraded video signal. Noise within the degraded video signal may be reduced to generate the improved video signal utilizing digital noise reduction and/or analog noise reduction. The received video signal may be compressed and decompressed to generate the random noise. The received video signal may be softened to generate the degraded video signal. The degraded video signal may be sharpened to generate the improved video signal.07-29-2010
20100225819METHODS AND SYSTEMS FOR CORRECTING STREAMING VIDEO SIGNALS - The present disclosure is directed to methods, systems, and apparatuses for modifying streaming video signals to be shown on a visual display. In one embodiment, a method includes receiving a streaming video signal with multiple display components. The method also includes isolating and transmitting the display components to a multiplier according to an associated clock signal for each of the display components. The method further includes fetching correction coefficients from a storage circuit. The correction coefficients correspond to individual display components. The method also includes presenting the correction coefficients to the multiplier along with the display components according to the associated clock signals, and adjusting the display components with the corresponding correction coefficients to form corrected display components of the streaming video signal. The method also includes collecting the adjusted display components into a corrected streaming video signal.09-09-2010
20100225820INTEGRATED ANALOG VIDEO RECEIVER - An analog video receiver implemented in an integrated circuit device. The analog video receiver includes an amplifier to amplify an analog video signal having a desired carrier frequency, and a mixing circuit to mix the amplified analog video signal with a complex sinusoid having a frequency substantially equal to the carrier frequency.09-09-2010
20100238353Automatic film grain adjustment - An inventive method obtaining film grains from a picture and processing the obtained film grains using a statistical distribution to determine new film grains. Preferably, a histogram of obtained film grain is subjected to the statistical distribution, which can be a normal distribution. Parameters of the normal distribution are controlled to determine the new film grains.09-23-2010
20100238355Method And Apparatus For Line Based Vertical Motion Estimation And Compensation - The present invention is related to line based vertical motion estimation and vertical motion compensation in consecutive frames of a motion picture, wherein the picture is divided in at least one region, and wherein: in a first summation luminance values for each line of the at least one region of a previous frame are summed, wherein the first summation of luminance values results in a previous accumulation profile; in a second summation of luminance values of for each line of the at least one region of a current frame are summed, wherein said second summation of luminance values results in a current accumulation profile; and wherein a vertical motion vector is derived by use of the previous accumulation profile and of the current accumulation profile.09-23-2010
20100225818METHODS AND SYSTEMS FOR FILTERING A DIGITAL SIGNAL - Aspects of the present invention are related to systems and methods for removing spikes and/or speckle noise from a digital signal.09-09-2010
20100220235METHOD FOR COMPOSITE VIDEO ARTIFACTS REDUCTION - A method for composite noise filtering is disclosed. The method generally includes the steps of (A) generating a selection value in response to a stationary check identifying one of a plurality of blendings for a current item of a current field, (B) generating a filtered item in response to one of (i) a first of the blendings between the current item and a first previous item co-located in a first previous field having an opposite phase of composite artifacts from the current field and (ii) a second of the blendings between the current item and a first motion compensated item from the first previous field and (C) switching between the first blending and the second blending in response to the selection value.09-02-2010
20110109803Single Frame Artifact Filtration and Motion Estimation - A video processing method comprising receiving a video stream comprising a plurality of frames, removing via one or more non-binary artifact functions a plurality of artifact pixels from the video stream, and outputting the video stream with the artifact pixels removed.05-12-2011
20100253851NOISE CANCELLER AND ELECTRONIC DEVICE USING THE SAME - A noise canceller includes an input terminal for receiving an input signal containing a received signal and a first noise signal generated by a noise source, a first delay unit for delaying the input signal, a pick-up antenna for receiving a second noise signal generated by the noise source, a cancel-signal generator for generating a noise-canceling signal based on the second noise signal, and a combiner for combining the delayed input signal and the noise-canceling signal so as to cancel the first noise signal contained in the input signal, and outputting the received signal. The noise canceller can include a second delay unit for delaying the second signal instead of the first delay unit or in addition to the first delay unit. This noise canceller cancels the noise signal generated by the noise source, thereby providing an electronic device having a preferable receiving sensitivity.10-07-2010
20090322951Reduction of Blocking Artifacts in Image Decompression Systems - A method and apparatus for reducing blocking artefacts in a decompressed image signal includes inputting the decompressed video signal and detecting locations of block and image content edges therein. Image content and block edges are discriminated between to remove or conceal the image content edges and the remaining block edges transformed to produce an error correcting signal to smooth the block edges at the detected locations in a delayed version of the decompressed video signal.12-31-2009
20130128121Methods and Apparatus for Video Completion - Methods, apparatus, and computer-readable storage media for video completion that may be applied to restore missing content, for example holes or border regions, in video sequences. A video completion technique applies a subspace constraint technique that finds and tracks feature points in the video, which are used to form a model of the camera motion and to predict locations of background scene points in frames where the background is occluded. Another frame where those points were visible is found, and that frame is warped using the predicted points. A content-preserving warp technique may be used. Image consistency constraints may be applied to modify the warp so that it fills the hole seamlessly. A compositing technique is applied to composite the warped image into the hole. This process may be repeated until the missing content is filled on all frames.05-23-2013
20100309378Method And System For Motion Compensated Noise Level Detection And Measurement - Two consecutive interlaced video pictures of the same polarity or two consecutive progressive video pictures are read by a video processing system. The video pictures may comprise a current picture and a noise reduced reference picture. Motion and/or motion vectors may be estimated between the current and reference pictures by a motion compensated noise detector and/or a motion compensated temporal filter. A noise level sample may be determined for a pixel in the current picture based on a window of pixel data from the current picture and a window of motion compensated pixel data from the reference picture. One or more of a moving edge gradient value, a moving content value and a determined range of noise level values may be utilized to determine a valid noise sample. Noise level samples may be accumulated and a noise level may be determined for the current picture.12-09-2010
20100315557REDUCING FLICKER IN THE DISPLAY OF VIDEO STREAMS - Image frames of a video stream are encoded with the aim of reducing flicker in the video stream when displayed. In one embodiment, the quantization parameter used to quantize an image frame is capped to be not greater than a quantization parameter used to quantize an immediately previous image frame. In another embodiment, the quantization step size used to quantize a macro-block of an image frame is computed based on the value of a quantization error of a co-located macro-block in an immediately previous image frame. In yet another embodiment, macro-block transform coefficients corresponding to high-frequency components are quantized using relatively higher quantization parameter values if the image frame is deemed to contain high activity. In yet another embodiment, flicker-prone macro-blocks of a source frame are replaced by corresponding best-match macro-blocks of a previous reconstructed frame, prior to being encoded.12-16-2010
20110025919Automated Video Data Fusion Method - A method for mitigating image distortions induced by optical wave propagation through a random media (e.g., atmospheric turbulence or volume of water) from a stream of video data provided by a single shortexposure image sensor is described. The method is based on the two following sequential steps: (1) enhancement of the raw video stream and (2) fusion of the enhanced stream using the lucky region fusion (LRF) technique. The first step enhances features of the raw image stream the LRF method success is based on and especially mitigates the effect of low light level, aerosol pollution, dust, haze, and other deteriorating factors. The second step, fusion of the enhanced stream, is realized by sequentially merging image regions with highest quality within a temporal buffer into a single image before sliding the temporal window forward. The process is continuously repeated in order to generate a stream of fused images. The resulting fused stream hence has an image quality superior to that of any image within the buffer and demonstrates improved contrast as well as increased detail visualization. In addition, the disclosed invention offers a method for automated extraction of random media (atmospheric turbulence for example) characteristics needed for optimizing the LRF method performance. Based solely on analysis of the enhanced video stream, this has the advantage to eliminate the need for turbulence strength characterization devices (e.g., scintillometer) and it allows the invention to provide an optimal fused stream even when operating within an evolving environment.02-03-2011
20090066842Image processing apparatus - An image processing apparatus executes distortion compensation based on distortion compensation information associated with desired distortion compensation and an angle of view of an image currently being displayed on a display device. Distortion compensation can be performed stepwise without use of any other distortion compensation information until a distortion compensated state is realized based on distortion compensation information stored in a memory unit. Distortion compensation based on a level received by an operating unit is provided. An image having undergone distortion compensation can be displayed. The number of distortion compensation information items need not be increased proportionally to the number of levels for a magnitude of distortion compensation to be implemented since distortion compensation can be stepwise implemented from the current distortion compensation until a magnitude of distortion compensation is realized based on specific distortion compensation information.03-12-2009
20110128447METHOD AND APPARATUS FOR AUTOMATIC REDUCTION OF NOISE IN SIGNALS TRANSMITTED OVER CONDUCTORS - A method and apparatus for automatic reduction of noise in video signals transmitted over conductors is presented. The present invention provides an adjustable amount of noise filtering matched to the amount of gain provided by an adjustable gain amplifier to a received video signal. One or more stages of a multi-stage discrete gain amplifier is provided with a corresponding noise filter circuit. The filter circuit is matched to the frequency response of and the amount of gain provided by the discrete gain amplifier stage. When the amplifier stage is applied to the received signal, the corresponding noise filter for that stage is invoked as well. In that manner, the amount of noise filtering applied to a video signal automatically varies with the amount of amplification provided to that signal.06-02-2011
20110115980AUTOMATIC CONTROL OF VISUAL PARAMETERS IN VIDEO PROCESSING - Embodiments of the invention are directed to a system and method for controlling visual parameters of a capturing device to minimize clipping and saturation according to predefined parameters. The method may include processing pixel values of a current input frame of a received video signal captured by a capturing device; accumulating processing results of the current input frame to processing results of one or more previous input frames and calculating a desired dynamic range based on pre-determined user parameters. The processing may further include checking if the accumulated results are within the desired dynamic range and determining if adjustment is desired. If the accumulated results are not within the desired dynamic range, adjusting visual parameters for a subsequent input frame, by controlling the capturing device and if the accumulated results are within the desired dynamic range maintaining current visual parameters of the current input frame for the subsequent input frame.05-19-2011
20110019095Arrangement And Approach For Image Data Processing - Image data is processed to produce an output using a frame insertion approach. According to an example embodiment, frames are generated for video data, based upon the video data and the presence (or absence) of artefacts in the video data. In one application, a dynamic frame insertion approach is used to selectively generate peaked and blurred video frames in a manner that mitigates undesirable display and/or enhancement of artefacts by tuning down or turning off the generation and/or insertion of video frames.01-27-2011
20110085085VISUAL PROCESSING DEVICE, DISPLAY DEVICE, VISUAL PROCESSING METHOD, PROGRAM, AND INTEGRATED CIRCUIT - A visual processing device, display device, visual processing method, program, and integrated circuit that change a strength of visual processing of an image in real-time. A spatial processing portion (04-14-2011
20110242421IMAGE DISTORTION CORRECTION APPARATUS AND METHOD - An image distortion correction apparatus and method are provided. The image distortion apparatus includes an image projector which projects an image on a projection screen; a user interface which receives an adjustment signal allowing a keystone correction on the projected image; a keystone correction unit which corrects a keystone distortion of the projected image by moving each side of the projected image according to the adjustment signal; and a controller which controls the image projector and the keystone correction unit to correct the image.10-06-2011
20110242420SMART GREY LEVEL MAGNIFIER FOR DIGITAL DISPLAY - Systems and methods are provided that facilitate grey level magnification to improve details and contrast for a dark scene of video on a digital display system. Preferably implemented over a limited pixel level range, the video enhancement process counts the number of pixels corresponding to each level within the range in a frame and then, based on the percent level distribution of the pixels, calculates the stack of percentage distribution. From the stack of percentage distribution, a transformation process is performed to reassign the pixel values over a dark level range and to expand the distribution of the pixels. The result of transformation enhances the details and contrast of the dark area significantly without affecting the bright scene. By only applying the algorithm to dark scenes, computation loads are reduced compared with some of the full picture processing methods. Lower computational loads are important to reduce motion artifacts in high speed video applications.10-06-2011
20110211124OBJECT SPEED WEIGHTED MOTION COMPENSATED INTERPOLATION - In one embodiment of the present invention, a method is provided for performing motion compensated interpolation using a previous frame and a current frame of a displayable output, the method comprising: detecting the speed of an object in the displayable output relative to the speed of a background in the displayable output; and blending results from a halo reducing interpolator and a median interpolator, wherein the results of each of the interpolators are weighted based on the speed of the object, to arrive at an interpolated frame using the previous frame and the current frame.09-01-2011
20100053444SIGNAL PROCESSING CIRCUIT AND SIGNAL PROCESSING METHOD FOR REMOVING CO-CHANNEL INTERFERENCE - A signal processing circuit and a signal processing method for removing a co-channel interference from a digital signal are provided. The signal processing circuit employs an adaptive filter for estimating a co-channel interference in a received digital signal. The adaptive filter takes the digital signal having a symbol signal outputted from a slicer subtracted therefrom as an input thereof. As such, the output of the adaptive filter does not contain any symbol data. Therefore, when the outputted estimation signal is subtracted from the received digital signal, it won't introduce any inter-symbol interference.03-04-2010
20090033797VIDEO DISPLAY APPARATUS AND NOISE REMOVAL METHOD THEREOF - A video display apparatus and a noise removal method thereof are provided. The video display apparatus includes a video processor which removes noise from an input video; and a controller which divides the input video into a plurality of areas according to settings, and controls the video processor to remove noise from each of the plurality of areas.02-05-2009
20100053445STATE DETECTOR OF VIDEO DEVICE AND STATE DETECTION METHOD THEREOF - A state detector of a video device and a state detection method thereof are provided. The state detector includes a first chroma detector, a second chroma detector, and a controller. The first chroma detector and the second chroma detector operate in a first state among a plurality of states. When the second chroma detector is not capable of processing an input signal normally, the controller controls the second chroma detector to switch between the states until the second chroma detector operates in a second state to process the input signal normally, and the first chroma detector is set to operating in the second state. As a result, the quality of a displayed image is improved.03-04-2010
20110249187REPAIRING SCRATCH IMPAIRMENTS TO AN IMAGE - A method for repairing scratch impairments in which brightness values for a set of points within a narrow region of the impaired input image that is aligned with an expected scratch direction are modified in a scratch repair process; and the scratch repair process is controlled in dependence upon the relationship between the impaired brightness values and corresponding modified brightness values.10-13-2011
20110075037ENHANCED IMAGE/VIDEO QUALITY THROUGH ARTIFACT EVALUATION - In an image/video encoding and decoding system employing an artifact evaluator a method and/or apparatus to process video blocks comprising a decoder operable to synthesize an un-filtered reconstructed video block or frame and an artifact filter operable to receive the un-filtered reconstructed video block or frame, which generates a filtered reconstructed video block or frame. A memory buffer operable to store either the filtered reconstructed video block or frame or the un-filtered reconstructed video block or frame, and an artifact evaluator operable to update the memory buffer after evaluating and determining which of the filtered video block or frame, or the un-filtered video block or frame yields better image/video quality.03-31-2011
20110069234Excellently Operable Projection Image Display Apparatus - A image distortion correction unit which corrects a distortion of a projected image includes: a switching unit which operates in response to an operation signal from a Keystone remote controller button to switch correction by a trapezoidal distortion correction process and correction by a corner distortion correction process back and forth; a determination unit which determines whether any one of the correction by the trapezoidal distortion correction process and the correction by the corner distortion correction process has been performed; and a prohibition unit which prohibits switching the trapezoidal distortion correction process and the corner distortion correction process back and forth if the determination unit determines that any one of the correction by the trapezoidal distortion correction process and the correction by the corner distortion correction process has been performed and the operation signal is also received from the Keystone remote controller button.03-24-2011
20110043703VIDEO DEVICE CAPABLE OF DETECTING CONNECTION TO DISPLAY DEVICES - A video device to generate analog video signals to a plurality of display devices comprises a video processing chip, a plurality of video output interface circuits and a plurality of detection circuits. The video processing chip converts input video data into the analog video signals and comprises at least one video decoder and a plurality of analog to digital convertors. The video output interface circuit transmits the analog video signals to the plurality of display devices. The detection circuit detects voltage of horizontal sync signals of the analog video signals to determine connection of the video output interface circuit to the display device, and generates a feedback signal to the video processing chip to control the video decoder and the analog to digital convertor accordingly.02-24-2011
20110019094SYSTEM AND METHOD FOR RANDOM NOISE ESTIMATION IN A SEQUENCE OF IMAGES - A system and method for estimating random noise in an image frame or a sequence of image frames are presented. In some embodiments, the method includes performing Global Noise Estimation by comparing current and past filtered frames; converting global noise estimates into local noise estimates using estimated noise parameters based on current input image's local mean intensity; and providing local noise estimates to an adapted generic spatio-temporal filter. A parameter-based noise model is applied in the noise calculation.01-27-2011
20100302447IMAGE DISPLAY DEVICE - According to the present invention, there is provided an image display device for displaying acquired image information including: an information acquisition section for acquiring image information and information associated with the image information by communication from an external device; an adjustment section for executing image quality adjustment processing in relation to display of the image information; and a setting section for setting details of the image quality adjustment processing, based on the information. Therefore, details of the image quality adjustment processing may easily be set automatically in an appropriate manner.12-02-2010
20100118203Method and device for estimating video noise - A method for estimating noise in a series of video frames includes selecting a region of a first frame, calculating high frequency quantities for the selected region, calculating temporal-domain high frequency quantities for the selected region of the frame and a mapping region of a second frame, and generating a noise estimate of the noise according to a relationship between the high frequency quantities and the temporal-domain high frequency quantities.05-13-2010
20090290067Image processing method - An image processing method for removing a noise component contained in an original image, includes: separating an original image into a temporary noise-free image and a temporary noise component; extracting an edge component in the temporary noise-free image by executing edge detection on the temporary noise-free image; determining a fine edge component in the original image contained in the temporary noise component based upon a level of the extracted edge component; extracting an actual noise component by excluding the fine edge component from the temporary noise component; and removing noise from the original image based upon the extracted actual noise component.11-26-2009
20100321579Front End Processor with Extendable Data Path - The present specification discloses a processing architecture that has multiple levels of parallelism and is highly configurable, yet optimized for media processing. At the highest level, the architecture is structured to enable each processor, which is dedicated to a specific media processing function, to operate substantially in parallel. In addition to processor-level parallelism, each processing unit can operate on multiple words in parallel, rather than just a single word per clock cycle. Moreover, at the instruction level, the control data memory, data memory, and function specific dath paths can be controlled all within the same clock cycle. Additionally, the processor has multiple layers of configurability, with the extendable data path of the processor being capable of being configured to perform specific processing functions, such as entropy encoding, discrete cosine transform (DCT), inverse discrete cosine transform (IDCT), motion compensation, motion estimation, de-blocking filter, de-interlacing, de-noising, quantization, and dequantization.12-23-2010
20080246881DTV RECEIVING SYSTEM AND METHOD OF PROCESSING DTV SIGNAL - A digital television (DTV) receiving system includes a known data detector, and a channel impulse response (CIR) estimator, a CIR calculator, a coefficient calculator, and a multiplier. The known data detector detects positions of known data and field sync data included in a data group. The CIR estimator estimates CIRs of the data included in the data group using the detected positions of the field sync data and the known data. The CIR calculator performs interpolation or extrapolation based on a characteristic of each data region included in the data group. The coefficient calculator calculates equalization coefficients using the estimated CIRs, and the multiplier multiplies the data in the data group with the coefficients.10-09-2008
20100110299SYSTEMS AND METHODS FOR CABLE EQUALIZATION - Provided herein are methods and systems that provide automatic compensation for frequency attenuation of a video signal transmitted over a cable. In accordance with an embodiment, a system includes an equalizer and a compensation controller. The equalizer receives a video signal that was transmitted over a cable, provides compensation for frequency attenuation that occurred during the transmission over the cable, and outputs a compensated video signal. The compensation controller automatically adjusts the compensation provided by the equalizer based on comparisons of one or more portions of the compensated video signal to one or more reference voltage levels.05-06-2010
20110069233Method and Apparatus for Inducing and or Reducing Geometric Distortions in a Display via Positive Going Pulses - In certain flat screen TV sets, such as LCD monitors, geometric errors can be induced in a video signal by positive going pulses. That is, a shift in a display is provided when one or more positive going pulse is added to the video signal following one or more sync pulse. To illustrate, AGC pulses, generally used for content control and or copy protection in the last lines of an active video field, cause a shift (horizontal displacement) in the picture for these last lines in the active field. Alternatively, turning off or attenuating such positive going pulses in the last lines of the active field, eliminates or reduces the picture shift.03-24-2011
20110261261IMAGE CORRECTION PROCESSING CIRCUIT, SEMICONDUCTOR DEVICE, AND IMAGE CORRECTION PROCESSING DEVICE - The image correction processing device (10-27-2011
20110096236Parametric Interpolation Filter For Motion-Compensated Prediction - In a motion compensated prediction process, a parametric interpolation filter (PIF) device is provided that takes into account the time-variant statistics of video sources, the filter being represented by a model determined by five parameters instead of by individual coefficients. The parameters are calculated and coded on a frame-by-frame basis to minimize the energy of the prediction error for each frame. The model design is based on the fact that high frequency energy of an HD video source is mainly distributed along the vertical and horizontal directions of a frame. A PIF device with the method according to the invention overcomes this obstacle because it represents each filter using only five parameters, all of which are encoded using sufficiently high precision without substantially increasing overhead.04-28-2011
20100214486Image Signal Processing Apparatus, Method of Controlling the Same, and Television Signal Receiving Apparatus - According to one embodiment, a sharpening module and a grayscale smoothing module are provided. The smoothing module smoothes and reduces grayscale differences in a plain area of an input digital image signal, according to a parameter. A frequency state detection module detects a frequency state of the input digital image signal. A first case to be detected is that lower-frequency components are substantially fewer than higher-frequency components. A second case to be detected is that the lower-frequency components are substantially more than the higher-frequency components. A correction parameter output module outputs a correction parameter which enhances a smoothing process more when the second case is detected than when the first case is detected, the smoothing process being performed by the smoothing module.08-26-2010
20100182509REMOVING 2FH CROSS TALK FOR TV - Artifacts occur in the images rendered on a 100 Hz TV as a result of the vertical and horizontal blanking intervals. These intervals cause transitions between high activity and low activity of the TV's digital processing parts which in return cause disturbances on the power supply lines. By keeping the digital processing parts active during the blanking intervals, the artifacts are removed.07-22-2010
20100066912BANDING ARTIFACT DETECTION IN DIGITAL VIDEO CONTENT - A method and system for identifying and determining banding artifacts in digital video content composed of a sequence of moving video pictures includes creating a mask image corresponding to a picture from said sequence of moving video pictures based on global gradient changes to detect potential areas containing banding artifacts. The values of the mask image are scaled thereby making banding artifact detection possible using gradient operators. The banding artifacts are then identified/detected based on the local gradients.03-18-2010
20100194990IMAGE PROCESSING DEVICE, IMAGE DISPLAY DEVICE, AND IMAGE PROCESSING METHOD - An image processing device includes a target correction amount calculating unit operable to calculate a target correction amount based on input image signals, a frame memory operable to store the input image signals, and a scene change amount calculating unit operable to calculate a scene change amount based on an input image signal of a present frame and an input image signal of a previous frame. Moreover, the image processing device includes a correction amount calculating unit operable to calculate a correction amount for the input image signal of the present frame, based on the target correction amount and the scene change amount, and a correcting unit operable to perform image quality correction to the input image signal of the present frame to generate a corrected input image signal, thereby outputting a corrected input image signal as an output image signal.08-05-2010
20100265403PROJECTOR APPARATUS AND PROJECTION IMAGE CORRECTING PROGRAM PRODUCT - A projector apparatus includes: a projection unit that projects an image onto a projection surface; a reflectance distribution detection unit that detects a reflectance distribution at the projection surface; a density distribution detection unit that detects a density distribution of a base pattern on the projection surface; a smoothing unit that smooths the reflectance distribution and the density distribution; an input unit that inputs image data; a correction unit that corrects the input image data based upon the smoothed reflectance distribution and the smoothed density distribution; and a control circuit that controls the projection unit so as to project the image based upon the correction image data.10-21-2010
20110187933IMAGE DISPLAY APPARATUS AND METHOD FOR CONTROLLING IMAGE DISPLAY APPARATUS - An image display apparatus of the present invention includes: a display panel; a signal processing unit which corrects an input video signal using correction parameters, and outputs the corrected video signal to the display panel; a power supply unit which supplies voltage to the display panel; a storage unit which stores the correction parameters; and a control unit, which, at startup of the image display apparatus, executes boosting processing for boosting voltage supplied from the power supply unit to the display panel up to a voltage required for driving the display panel in stages, and transfer processing for transferring the correction parameters from the storage unit to the signal processing unit, wherein the transfer processing is processing for intermittently transferring the correction parameters using a period when boosting is not performed in the boosting processing.08-04-2011
20110149164METHOD CIRCUIT AND SYSTEM FOR MITIGATING INTERFERENCE BETWEEN WIRELESS DATA AND WIRELESS VIDEO TRANSCEIVERS OPERATING IN PROXIMITY WITH ONE ANOTHER - Disclosed is a circuit including a wireless data communication circuit, a wireless video communication circuit, and control logic functionally associated with either of the circuits and adapted to mitigate interference between transmissions of one of the circuits with reception by the other circuit.06-23-2011
20100026900VIDEO SIGNAL PROCESSING APPARATUS, VIDEO SIGNAL PROCESSING METHOD, AND PROGRAM - A video signal processing apparatus includes: a gain inverse correction means for giving an inverse correction gain resulting in an inverse correction characteristic to a gain to a video signal subjected to automatic gain control and outputting the video signal; a texture component removing means for removing a texture component from the video signal output from the gain inverse correction means; a gain inverse-inverse correction means for giving an inverse-inverse correction gain to the video signal output from the texture component removing means; a texture component extracting means for extracting a texture component signal, utilizing the video signal output by the gain inverse correction means and the video signal output by the texture component removing means; and a signal synthesizing means for synthesizing a structure component signal based on the video signal output by the gain inverse-inverse correction means and the texture component signal to output a video signal.02-04-2010
20100026896NOISE REDUCTION APPARATUS AND NOISE REDUCTION METHOD - According to one embodiment, a noise reduction apparatus includes a frame delay module, first and second impulse noise detectors, first and second impulse noise reducers, a motion detector, and a noise reducer. The frame delay module delays a video signal by one frame to obtain a frame delay video signal. The first and second impulse noise detectors detect impulse noise in the video signal and the frame delay video signal. The first impulse noise reducer generates a current frame video signal by reducing the impulse noise in the video signal. The second impulse noise reducer generates a previous frame video signal by reducing the impulse noise in the frame delay video signal. The motion detector detects motion amount from the current and previous frame video signals. The noise reducer reduces noise other than the impulse noise in the current frame video signal based on the motion amount.02-04-2010
20100026899IMAGE PROCESSOR, IMAGE DISPLAY DEVICE, IMAGE PROCESSING METHOD, IMAGE DISPLAY METHOD, AND PROGRAM - An image processor that corrects image signals corresponding to sub-pixels which form one pixel includes: a shift amount storage section that stores shift amounts of display positions of display sub-pixels corresponding to the sub-pixels which form a display pixel with respect to a predetermined reference position within a display image; and an image signal correcting section that corrects image signals corresponding to sub-pixels, which form each pixel of an input image, on the basis of the shift amounts stored in the shift amount storage section. The image signal correcting section corrects image signals in which dummy image signals corresponding to dummy sub-pixels, which are provided outside sub-pixels in an endmost portion of the input image, are added to input image signals of the sub-pixels.02-04-2010
20100026898IMAGE DISPLAYING DEVICE AND METHOD, AND IMAGE PROCESSING DEVICE AND METHOD - Deterioration in image quality of a moving image obtained by special reproduction caused by frame rate conversion (FRC) processing of a motion compensation type is prevented. An image displaying device includes an FRC portion 02-04-2010
20100020241RESOLUTION CONVERSION APPARATUS, METHOD, AND PROGRAM - An apparatus includes a first-acquisition unit acquiring, from target image data, an input image pattern including pixel values within a predetermined range with reference to each of ideal corresponding points, a second-acquisition unit acquiring, as candidate image patterns, from search-image-pattern data, a first candidate image pattern including pixel values within the predetermined range, a finding unit finding, from the search-image-pattern data, an estimated image pattern as a second candidate image pattern of the candidate image patterns which has a smaller difference from the input image pattern than other candidate image patterns, a first setting unit setting pixel values of positions corresponding to the ideal corresponding points in the estimated image pattern as pixel values at the ideal corresponding points, and a conversion unit converting a resolution of the target-image data using the N-dimensional coordinate values and the pixel values corresponding to the N-dimensional coordinate values.01-28-2010
20120147272METHOD OF PROCESSING VIDEO, VIDEO PROCESSING CIRCUIT, LIQUID CRYSTAL DISPLAY DEVICE, AND ELECTRONIC APPARATUS - A video processing circuit detects a risk boundary that is a part of a boundary between a dark pixel and a bright pixel, and is determined in accordance with the tilt azimuth of liquid crystal molecules from a boundary changed over the previous frame to the current frame and, for at least one side of dark pixels and bright pixels brought into contact with the detected risk boundary, corrects a video signal designating the application voltage of a liquid crystal element corresponding to the pixel of the frame brought into contact with the risk boundary out of a plurality of frames from the current frame to k frames (here, k is a natural number) following the current frame such that a lateral direction electric field generated between the dark pixel and the bright pixel decreases.06-14-2012
20080316362MECHANISMS TO CONCEAL REAL TIME VIDEO ARTIFACTS CAUSED BY FRAME LOSS - The claimed subject matter provides systems and/or methods that facilitate describing, communicating, utilizing, etc. a frame dependency structure in connection with real time video communication. For example, a protocol can be employed to communicate the dependency structure from a sender to a receiver. Moreover, a mechanism on a receiver side can detect frame(s) that will be rendered with artifacts if displayed due to previous frame loss; this mechanism can leverage receiver side knowledge concerning the dependency structure of the of the frames.12-25-2008
20110051005Method And Apparatus For Integrated Motion Compensated Noise Reduction And Frame Rate Conversion - A video processing system may receive a current raw video frame and may estimate motion between the current frame and a previous frame to determine motion vectors (mv). Based on the same mvs, motion compensated (MC) noise reduction may be performed and MC frame rate conversion (FRC) may generate a new frame. The previous frame may be noise reduced and/or a raw video frame. A MC frame may be generated based on the previous video frame and the mvs. Noise reduction may comprise blending the current raw frame with the MC frame. A blending factor may be determined based on similarity between pixels of the current video frame and MC pixels of the previous frame. The mvs may be scaled for FRC. Noise reduction may be performed in parallel and/or prior to the FRC depending on whether raw or noise reduced frames are utilized.03-03-2011
20110019096METHOD AND SYSTEM FOR DETECTION AND ENHANCEMENT OF VIDEO IMAGES - A method and a system for adaptive image enhancement are provided for measuring the image quality of a pixel region in a frame, performing an image classification based on the image quality measurement, and enhancing image quality by applying operations according to image classification of the region. Also provided is a method as above including the steps of dividing a frame into P pixel regions; and for each one of the pixel regions measuring the image quality; assigning an image quality class; and enhancing the image. Also provided is a system for adaptive image enhancement including a circuit to measure the image quality of a pixel region in a frame in a source video image; a circuit to perform an image classification of the region based on the image quality measurement; and a circuit to enhance the image quality of the region in the source video image a by applying operations based on the image classification of the frame.01-27-2011
20100302448SYSTEM AND METHOD FOR AUTOMATIC FILTER GENERATION USING SAMPLED SINC FUNCTION WITH WINDOWED SMOOTHING - Methods and systems for processing a plurality of pixels, in a video system, are disclosed. Aspects of the method may comprise acquiring scaling factors associated with a plurality of output pixels and generating filter coefficients during the generation of the output pixels. The filter coefficients may be utilized to filter a plurality of pixels to produce the plurality of output pixels. The filter coefficient may be generated on the fly utilizing a windowed sinc function corresponding to the scaling factors. The sine function may be sampled according to the needed number of filter taps to determine the filter coefficients.12-02-2010
20110304773IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD - An image processing apparatus includes: n input receiving means for receiving input image signals representing images to be displayed as video images on n divided screens obtained by dividing a screen of a display into n areas having the same number of pixels; n accumulative weighted averaging means for identifying pixels to be processed having the same relative positions in one-frame-length images displayed on the n divided screens corresponding to the image signals inputted through the n input receiving means and accumulatively performing weighted averaging on the pixels to be processed whenever the frame changes; n memories that store the pixels of the one-frame-length images displayed on the n divided screens and having undergone the accumulative weighted averaging; and access switching means for switching the memories accessed by the n accumulative weighted averaging means based on a control signal outputted from one of the n accumulative weighted averaging means.12-15-2011
20100182510SPECTRAL SMOOTHING METHOD FOR NOISY SIGNALS - A smoothing method for suppressing fluctuating artifacts in the reduction of interference noise includes the following steps: providing short-term spectra for a sequence of signal frames, transforming each short-term spectrum by way of a forward transformation which describes the short-term spectrum using transformation coefficients that represent the short-term spectrum subdivided into its coarse and fine structures; smoothing the transformation coefficients with the respective same coefficient indices by combining at least two successive transformed short-term spectra; and transforming the smoothed transformation coefficients into smoothed short-term spectra by way of a backward transformation.07-22-2010
20090167953APPARATUS AND METHOD FOR CORRECTION OF SIGNAL DISTORTION - A method is provided for correction of signal distortion, wherein the method comprises the steps of reading in a digital input signal value, determining a digital output signal value on the basis of the digital input signal value that has been read in, and outputting the digital output signal value to a signal processing path, wherein the digital output signal value is determined such that a predetermined systematic error of signal processing by the signal processing path with regard to the digital input signal value is compensated for.07-02-2009
20110063513SYSTEM AND METHOD FOR REDUCING VIDEO BLOCK ARTIFACTS - The disclosed embodiments relate to a system and method for reducing block artifacts in a video picture. Embodiments include a system that adaptively applies a smoothing of a video picture on a pixel by pixel basis depending on the level of detail surrounding the pixel. In embodiments an amount of smoothing of the pixel depends on the level of detail in the four quadrants surrounding the pixel and the contrast between the pixel and adjacent pixels.03-17-2011
20100245670SYSTEMS AND METHODS FOR ADAPTIVE SPATIO-TEMPORAL FILTERING FOR IMAGE AND VIDEO UPSCALING, DENOISING AND SHARPENING - A method for adaptive spatio-temporal filtering is disclosed. Local motion vectors between a current video frame and other nearby video frames are determined. Local motion-aligned temporal confidence parameters are determined. Local spatial orientation parameters are determined. The local motion vectors, the local motion-aligned temporal confidence parameters, and the local spatial orientation parameters are used to adaptively determine spatio-temporal kernel weights. The spatio-temporal kernel weights are used to perform spatio-temporal filtering on input video data.09-30-2010
20100245671Apparatus and method for processing video signal - According to one embodiment, an MPEG noise reduction processing unit which performs a process of reducing a mosquito noise to a received video signal can be controlled in a setting state corresponding to a desired item selected on the setting screen in which the plural items to be set are displayed as an option.09-30-2010
20110019093Method And System For Mitigating Motion Trail Artifacts And Improving Low Contrast Contours In Temporal Filtering Based Noise Reduction - Current output pictures of video data are generated utilizing a motion compensated (MC) blended picture and a corresponding non-MC blended picture of the video data. Windows of picture data from a first picture and MC windows of picture data from a MC previously output picture may be partitioned. The partitioned widows are compared and the first picture is blended with the MC previously output picture based on the comparison to, for example, reduce noise and prevent motion trail artifacts. Non-MC windows of picture data from a MC or non-MC previously output picture may be partitioned and compared with the windows of picture data from the first picture. The first picture may be blended with the MC or non-MC previously output picture based on the comparison to reduce motion trail artifacts. A blending factor is determined and utilized to blend the blended pictures to reduce noise and prevent motion artifacts.01-27-2011
20120026402METHOD AND SYSTEM FOR VIDEO NOISE FILTERING - A video processing device may compare a pixel or group of pixels of a current video picture to a pixel or group of pixels of a previous video picture. The video processing device may generate a motion vector for the pixel or group of pixels of the current video picture based on the comparison. The video processing device may determine an amount of filtering to be applied to the pixel or group of pixels of the current video picture. The video processing device may adjust the determined amount of filtering to be applied to the pixel or group of pixels based on the generated motion vector and based on a brightness value.02-02-2012
20120314137IMAGE PROCESSING SYSTEM AND DISPLAY DEVICE - A liquid crystal display device (12-13-2012
20100289961IMAGE PROCESSING CIRCUIT AND IMAGE PROCESSING METHOD THEREOF - An image processing circuit and an image processing method thereof are disclosed. A difference value adaptor of the image processing circuit produces a weighing value and a flag value corresponding to the pixel according to the pixel difference value of each pixel of an input video signal. The image processing circuit judges which area among a first area, a second area and a third area the pixel difference value of each pixel falls in according to the flag value. The image processing circuit performs a low-pass filtering processing on the pixel having the pixel difference value falling in the first area, performs a high-pass filtering processing on the pixel having the pixel difference value falling in the second area and performs a luminance transient improvement processing (LTI processing) on the pixel having the pixel difference value falling in the third area.11-18-2010
20120162527BLUR DETECTION WITH LOCAL SHARPNESS MAP - A single-ended blur detection probe and method with a local sharpness map for analyzing a video image sequence uses two sets of edge filters, one for “fast edges” and the other for “slow edges.” Each set of edge filters includes a horizontal bandpass filter, a vertical bandpass filter and a pair of orthogonal diagonal filters where the frequency response of the fast edge filters overlap the frequency response of the slow edge filters. The video image sequence is input to each filter of each set, and the output absolute values are combined with weighting factors to produce a slow edge weighted sum array and a fast edge weighted sum arra. The respective weighted sum arrays are then decimated to produce a slow edge decimated array and a fast edge decimated array. The ratio of the maximum difference value between the decimated arrays and the maximum value from the fast edge decimated array, weighted by an appropriate factor, produces a localized maximum sharpness value, the log of which produces a dimensionless blur value.06-28-2012
20120127370ADAPTIVE FILTER FOR LOW-LIGHT NOISE REDUCTION - In general, in one embodiment, low-light noise is removed from an image by separately filtering luma and chroma components of the image, by adaptively filtering the image based at least in part on a Gaussian distribution of the image, and/or by dividing the image into separate regions and filtering each region separately.05-24-2012
20120133836FRAME LEVEL QUANTIZATION ESTIMATION - A frame level noise estimate for an image can be determined. An image processor includes a high pass filter unit configured to perform high-pass spatial filtering of image data for first and second frames to produce high-pass spatially filtered information for the first frame and the second frame. A cumulative histogram generator is configured to analyze the high-pass spatially filtered information for the first frame and the second frame to produce a first cumulative histogram for the first frame and a second cumulative histogram for the second frame. A comparator is configured to determine a difference value between the first and second cumulative histograms. A mapping unit is configured to determine an estimated noise value based on the difference value.05-31-2012
20120162528VIDEO PROCESSING DEVICE AND VIDEO DISPLAY DEVICE - Provided are a video processing device and a video display device capable of inhibiting the degradation of image quality and improving the video resolution. The video processing device has a motion vector detection unit (06-28-2012
20120162526Method and System for Detecting Analog Noise in the Presence of Mosquito Noise - A method and system are provided in which a processor, such as a video processor, may determine a flatness value for a current video picture and may adjust a mosquito noise filtering of a subsequent video picture based on the determined flatness value. The flatness value may be determined within a predetermined region of the current video picture, which may be dynamically modified by the processor. The flatness value may be associated with the presence of analog noise in the current video picture, and may be determined based on horizontal and vertical variance values determined for one or more portions of the current video picture. The processor may adjust a mosquito noise strength value of the current video picture based on the determined flatness value and may adjust the mosquito noise filtering of the subsequent video picture based on the adjusted mosquito noise strength value of the current video picture.06-28-2012
20120162525Method And System For Digital Noise Reduction Of Scaled Compressed Video Pictures - In a video processing device, scale of a video image is detected for vertical and horizontal directions based on pixel information, for example, per pixel vertical and horizontal gradients. Gradients are utilized or discarded based on picture format, standard deviation of luma levels and pixel location relative to black border edges, graphics and/or overlaid content. Mosquito noise filters are adapted based on scale and/or noise strength. Median and/or linear filter results are selected based on a weakest, a strongest and/or a blended result. Horizontal and vertical operations are performed separately for edge detection, edge strength determination, filtering and filter correction control. Horizontal and vertical block grid spacing and grid shift are determined. Block noise strength is determined. Block noise filters are configured based on scaling and/or noise strength. Filter corrections are limited based on block noise strength. Noise reduction results may be blended to generate a pixel correction value.06-28-2012
20090195697NOISE AND/OR FLICKER REDUCTION IN VIDEO SEQUENCES USING SPATIAL AND TEMPORAL PROCESSING - A method and apparatus is disclosed herein for reducing at least one of both flicker and noise in video sequences. In one embodiment, the method comprises receiving an input video and performing operations to reduce one or both of noise and flicker in the input video using spatial and temporal processing.08-06-2009
20100007797Digital Video Fingerprinting Based on Resultant Weighted Gradient Orientation Computation - Video sequence processing with various filtering rules is applied to extract dominant spatial features and generate unique set of signatures describing video content. Accurate active regions are determined for each video sequence frame. Subsequently, a video sequence is structured by tracking statistical changes in the content of a succession of video frames, and suitable frames are selected for further spatial processing. Selected video frames are processed for feature extraction and description, and compact representative signatures are generated, resulting in an efficient video database formation and search.01-14-2010
20120257113Filter for Video Stream - A filter for a video stream is provided. The filter generates a filtered picture according to a current picture and its previous picture. A motion difference calculator accumulates differences between current picture values and previous picture values within a neighborhood of each pixel to provide a corresponding motion difference. A histogram counter performs histogram counting according to motion differences of the pixels. A filter value calculator provides a filter value for each pixel according to operations of the motion difference calculator and the histogram counter. A blender blends the current picture value and the previous picture value of each pixel according to weightings correlated to the filter value, and provides a filtered picture value for each pixel of the filtered picture.10-11-2012
20090021645Video signal processing device, video signal processing method and video signal processing program - A video signal processing device for compressing input video and transmitting compressed video data onto a network, the video signal processing device including a compression section configured to compress the video, and a noise reduction section configured to reduce noise in video data by a predetermined amount of noise reduction according to the size of the video data transmitted onto the network.01-22-2009
20090021644Image noise measurement system and method - An image noise measurement system performs a noise estimation on a current image. A storage device stores a previous image. A noise estimator performs a noise estimation on sub-areas of the current image and the previous image to thereby produce a noise estimation index for the sub-area of the current image. A distribution calculator calculates a distribution of positive and negative signs of pixel differences in the sub-areas of the current image and the previous image to thereby output a positive sign number and a negative sign number. A confidence generator produces a confident level index according to the positive sign number and the negative sign number. A recursive filter performs a recursive filtering operation on the noise estimation index according to the confident level index to thereby produce a noise estimate for the current image.01-22-2009
20120081612AUTOMATIC PARAMETER CONTROL FOR SPATIAL-TEMPORAL FILTER - A method for image processing includes receiving an input image and estimating a noise characteristic of the input image, wherein the noise characteristic includes a temporal characteristic and a spatial characteristic. Spatially filtering the input image based upon the spatial characteristic, wherein the spatial characteristic is dependent upon the temporal characteristic.04-05-2012
20100231796NOISE REDUCTION FOR ANALOG VIDEO APPLICATIONS - Systems and methods are provided that facilitate reducing noise within sampled video information in a CMOS sensor imager. A multi-capacitor sample and hold can capture multiple samples of video information during at least partially overlapping time intervals. The multi-capacitor sample and hold can include a plurality of capacitors and a plurality of sampling switches, wherein each of the sampling switches can be coupled to a respective one of the plurality of capacitors. The plurality of sampling switches can be closed at a substantially concurrent time to begin capturing samples with the plurality of capacitors. Thereafter, the plurality of sampling switches can each be opened at respective disparate times to collect differing noise samples with each of the plurality of capacitors. A readout component can combine (e.g., average) the samples obtained by the plurality of capacitors, thereby reducing noise levels.09-16-2010
20100231797VIDEO TRANSITION ASSISTED ERROR RECOVERY FOR VIDEO DATA DELIVERY - Techniques for video data delivery are provided. A first data stream is received that includes a plurality of video data frames. At least one corrupted video data frame is detected in the first data stream. At least one replacement video data frame is generated for the corrupted video data frame(s) based at least on a non-corrupted video data frame received in the first data stream prior to the corrupted video data frame(s). The replacement video data frame(s) include a modified form of the non-corrupted video data frame, and are configured to provide a smooth scene transition from the non-corrupted video data frame. The corrupted video data frame(s) are replaced in the first data stream with the generated replacement video data frame(s) to generate a second data stream.09-16-2010
20100231798IMAGE PROCESSING DEVICE AND METHOD - An image processing device includes: a level difference calculation means for calculating the difference of pixel values between each pixel and a neighborhood pixel as a level difference; a classification means for classifying respective pixels into classes in each range of the level difference; a boundary proportion calculation means for calculating proportion of the number of pixels at a block boundary as a boundary proportion according to the respective classes; and a block noise intensity determination means for determining a level difference of the class in which the boundary proportion is higher than a given threshold as well as the maximum value as block noise intensity in the image.09-16-2010
20110037900APPARATUS FOR REMOVING NOISE OF VIDEO SIGNAL - An apparatus for removing a noise of a video signal is discussed, by which a noise level can be effectively estimated to enhance an image quality of the video signal, by which the noise can be removed in a manner of effectively estimating a noise level though motion adaptive filtering, and by which blurring is prevented in the process of removing the noises.02-17-2011
20110037899APPARATUS FOR REMOVING NOISE OF VIDEO SIGNAL - An apparatus for removing a noise of a video signal is disclosed, by which a noise level can be effectively estimated to enhance an image quality of the video signal, by which the noise can be removed in a manner of effectively estimating a noise level though motion adaptive filtering, and by which blurring is prevented in the process of removing the noises. The present invention includes a temporal noise level estimation unit estimating a level of a temporal noise included in the video signal using a difference between two temporally consecutive videos, a noise correction unit correcting a noise estimated by the temporal noise level estimation unit, and a noise removal unit removing the noise included in the video signal using a level of the corrected noise.02-17-2011
20120092559Rolling Shutter Distortion Correction - Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for performing rolling shutter distortion corrections are described. A video clip captured by a user is received and each of a plurality of predefined affine transforms for rolling shutter distortion correction is applied to the received video clip. Further, a visual indication of results from each of the plurality of the predefined affine transforms is presented to the user and input is received from the user selecting one of the visual indications. Furthermore, the predefined affine transform corresponding to the selected visual indication is associated with a device that acquired the received video clip. Additionally, the association can be stored, and the stored association can be used later to automatically perform a rolling shutter distortion correction on another video clip upon detecting that the other video clip comes from same device that already went through a calibration sequence.04-19-2012
20120133837VIDEO DISPLAY APPARATUS, VIDEO DISPLAY METHOD, AND PROGRAM - A video display apparatus includes a video display unit configured to display a video image, a viewer detection unit configured to detect a position of a viewer, a moving speed measurement unit configured to measure a moving speed of the viewer, a display area determination unit configured to determine, based on the position and moving speed of the viewer, a video display area where the video image is displayed on the video display unit, and a video control unit configured to display the video image in the video display area determined by the display area determination unit.05-31-2012
20130010197SHARED MEMORY MULTI VIDEO CHANNEL DISPLAY APPARATUS AND METHODS - A shared memory video processor including signal processing circuitry. The signal processing circuitry may enable a noise reducer and a de-interlacer to share access to field buffers in a memory device to store various field lines. Some of the stored field lines may also be shared within the signal processing circuitry. The sharing of some stored field lines reduces overall memory bandwidth and capacity requirements. The signal processing circuitry may be capable of performing multiple field line processing. A set of field line buffers may be provided to store field lines for multiple field segments and may provide the data to the corresponding inputs of the signal processing circuitry. To further reduce storage, some of the field line buffers may also be shared among the signal processing circuitry.01-10-2013
20110149163IMAGE PROCESSING METHOD, DEVICE AND PROGRAM TO PROCESS A MOVING IMAGE - The present invention relates to an image processing method and to a device to process a moving image, which is shot by a predetermined video shooting device, in increments of access units. The imaging blur is represented by a corresponding low-pass filter showing the properties of imaging blur which occurs at the time that said moving image is shot with said video shooting device. According to the present method an inverse filter having inverse properties as to said low-pass filter is generated. A processing is performed to apply said inverse filter to said access unit to be processed. Hereby, the step of generating an inverse filter includes an iterative algorithm in the frequency domain based on the original blurred image and the point spread function.06-23-2011
20120242903METHOD AND APPARATUS FOR IMPROVING IMAGE QUALITY - A method of improving an image quality of a video signal, which is supplied on a frame-by-frame basis, includes extracting low frequency components from a video signal of an n-th frame, where n is a natural number excluding zero, subtracting the extracted low frequency components from a video signal of an (n+m)th frame to produce high frequency components, where no is a natural number excluding zero, and adding the produced high frequency components to the video signal of the (n+m)th frame. The extracted low frequency components include a horizontal component and a vertical component.09-27-2012
20080252789Block Noise Reduction Device and Image Display Device - A frame correlation determination part is for determining a level of correlation of decoded image signals between frames. A flat region detection part is for detecting an image region in which a difference in brightness between neighboring pixels is small as a flat region from the decoded image signals. A high-frequency region detection part is for detecting an image region including a high spatial frequency component as a high-frequency region from the decoded image signal. A smoothing processing part is for performing smoothing processing to the decoded image signal corresponding to a predetermined region. A processing region setting part is for setting an image region in which the smoothing processing part is to perform smoothing processing to the decoded image signal are included. The processing region setting part sets at least a region in frames in which a correlation between frames is low and which is a flat region and not a high frequency region in the decoded image signals, as a processing region.10-16-2008
20080246882NONLINEAR PROCESSING DEVICE AND IMAGE DISPLAY APPARATUS - A nonlinearly processed (gamma-corrected) video signal is subjected to three-dimensional signal level correction using three-dimensional correction values and corresponding to a position in a horizontal direction and a vertical direction of a pixel on a display screen of an image display unit and the signal level of the pixel data. Thereby, accurate gamma correction is made possible, and horizontal and vertical area information (grid block) can be disposed in an optimum positional relation according to resolution of the screen.10-09-2008
20110261262ROBUST MOSAICING METHOD, NOTABLY WITH CORRECTION OF MOTION DISTORTIONS AND TISSUE DEFORMATIONS FOR A VIVO FIBERED MICROSCOPY - The present invention concerns a mosaicing method taking into account motion distortions, irregularly sampled frames and non-rigid deformations of the imaged tissue. The invention relates to a method for mosaicing frames from a video sequence acquired from a scanning device such as a scanning microscope, the method comprising the steps of: 10-27-2011
20130169879ADAPTIVE SUB-PIXEL ACCURACY SYSTEM FOR MOTION AND DISPARITIES ESTIMATION07-04-2013
20130169880METHOD OF DETECTING VISUAL STRESS AND PHOTOSENSITIVE EPILEPSY TRIGGERS IN VIDEO AND MITIGATION DEVICE - Embodiments of the invention include a method for detecting visual stress scenes in a video. First, a video that includes scenes that may cause visual stress in some viewers is received. Then, a signal representing human perceptual response from scenes in the video is generated. An envelope follower is applied to the perceptual response, from which indications that the video contains visual stress scenes may be generated. The output may also be used to control a contrast limiting circuit, which modifies the original video to remove or minimize those scenes that may cause visual stress. Additionally, output from the envelope follower may be converted to a simulated EEG signal and used to verify accurate modeling by comparing the simulated EEG signal to one measured directly from a viewer watching the same video.07-04-2013
20080218635IMAGE PROCESSING SYSTEM, IMAGE PROCESSING METHOD, AND COMPUTER PROGRAM PRODUCT - An image processing system includes a multiresolution decomposition section for frequency decomposing an image signal into high and low frequency components at an nth stage, a correction coefficient calculation section for calculating at least one of a gradation correction coefficient, a noise correction coefficient, and an edge correction coefficient with respect to the high frequency component at an ith decomposition stage (1≦i≦n) based on at least one of the low frequency component at the ith decomposition stage, a visual system adaptation model, a noise amount estimation model, and an edge enhancement model, a correction section for correcting the high frequency component based on the calculated correction coefficient, and a multiresolution composition section for composing the image signal corrected based on the low frequency component and the corrected high frequency component.09-11-2008
20130128122GENERAL BANDING AND CODEC BANDING ARTIFACT REMOVAL - A method and apparatus are disclosed for identifying and removing banding artifacts (i.e., false contours) resulting from insufficient bit depth caused by digital image quantization, conversion, and/or compression. This method includes: explicitly identifying texture block and flat block; de-termination of filter window sizes with the consideration of handling transitions between texture block and flat block; de-banding filtering with edge protection; and noise shaping according to de-banding filter result.05-23-2013
20110211123METHOD AND DEVICE FOR IMPROVING THE VISIBILITY ESPECIALLY OF THIN LINES - The invention relates to a method and a device to detect thin lines of an incoming signal, especially of an image or video signal, comprising the steps of: analysing the incoming signal, calculating the first derivative of the incoming signal (09-01-2011
20130148027SYSTEMS AND METHODS FOR CABLE EQUALIZATION - Provided herein are methods and systems that provide automatic compensation for frequency attenuation of a video signal transmitted over a cable. In accordance with an embodiment, a system includes an equalizer and a compensation controller. The equalizer receives a video signal that was transmitted over a cable, provides compensation for frequency attenuation that occurred during the transmission over the cable, and outputs a compensated video signal. The compensation controller automatically adjusts the compensation provided by the equalizer based on comparisons of one or more portions of the compensated video signal to one or more reference voltage levels.06-13-2013
20120274855IMAGE PROCESSING APPARATUS AND CONTROL METHOD FOR THE SAME - In an image processing apparatus, information indicating a degree of correlation between a current frame and a previous frame is computed based on a pixel value in the current frame before being subjected to the recursive noise reduction and a pixel value in the previous frame after being subjected to the recursive noise reduction. Then, a recursive coefficient, which is a weight of the previous frame, is determined based on the degree of correlation and a frame rate of the moving image. The recursive noise reduction is applied to the current frame by combining the pixels in the previous frame and the current frame using the recursive coefficient. For the same degree of the correlation, the recursive coefficient is determined to be smaller as the frame rate is lower. Noise reduction in accordance with the image frame rate is achieved.11-01-2012
20100309377CONSOLIDATING PRIOR TEMPORALLY-MATCHED FRAMES IN 3D-BASED VIDEO DENOISING - In one system embodiment, an overlapped block processing module configured to provide three-dimensional (3D) denoising of plural frames corresponding to a raw video sequence; and a frame alignment module configured to represent the raw video sequence with motion compensated frames corresponding to the raw video sequence, the motion compensated frames consisting of the plural frames and fewer in quantity than the quantity of frames of the raw video sequence, the plural frames based on prior temporally matched frames corresponding to the raw video sequence.12-09-2010
20120281146IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND PROGRAM FOR IMAGE PROCESSING - An image processing device of the present invention includes: a motion amount estimating unit which estimates, using feature points extracted from each of a first picture and a second picture, a motion amount indicating an amount of displacement of the second picture with respect to the first picture, the second picture being captured temporally after the first picture; a determining unit which determines, using the feature points, whether or not correction is made using the motion amount estimated by the motion amount estimating unit; and a picture correcting unit which corrects the displacement of the second picture with respect to the first picture using the motion amount so as to correct the displacement between the pictures, in the case where the determining unit determines that the correction is made using the motion amount.11-08-2012
20120281145LEAST SQUARES MATRIX COMPRESSION AND DECOMPRESSION IN A DIGITAL TELEVISION RECEIVER - The current application is directed to reducing the implementation cost of least squares (LS) channel estimation in a digital communications receiver. An inverse correlation matrix is compressed on a per-diagonal basis for low cost storage in the receiver. The inverse correlation matrix is decompressed and utilized online on a per-diagonal basis.11-08-2012
20120019727Efficient Motion-Adaptive Noise Reduction Scheme for Video Signals - A adaptive noise reduction filter is provided for reducing noise in a video signal. Each pixel in a portion of a video frame is evaluated to determine a likelihood L of impulse noise corruption to each pixel. A total number P of pixels in the video frame that have a likelihood of impulse noise corruption is determined. One of a plurality of spatial noise reduction filters is selected to use on the video frame based on the total number P and on the likelihood L of impulse noise corruption to a current pixel. A motion value for each of the pixels in the portion of the video frame may be determined and used to inhibit spatial noise reduction filtering of each pixel that has a low motion value.01-26-2012
20130194504Image processing method for recovering details in overexposed digital video footage or digital still images - The present method relates to digital color image processing, in particular restoration and recovery of lost contrast and details in highlights due to overexposure or clipping by reconstructing components based on the signal remaining in at least one non-clipped signal component.08-01-2013
20130194505Optimized Filter Selection for Reference Picture Processing - Reference processing may be used in a video encoder or decoder to derive reference pictures that are better correlated with a source image to be encoded or decoded, which generally yields better coding efficiency. Methods for filter selection for a reference processing unit adapted for use in a video codec system are discussed. Specifically, methods for filter selection based on performing motion estimation and obtaining distortion/cost information by comparing reference pictures, either processed or non-processed, with the source image to be encoded are discussed.08-01-2013
20130201401IMAGE SIGNAL PROCESSING APPARATUS, IMAGING APPARATUS AND IMAGE PROCESSING PROGRAM - An image signal processing apparatus includes an image signal input unit for inputting an image signal, a noise correcting unit for executing noise correction processing for the input image signal to output a noise-corrected image signal; an image signal correcting unit for executing signal level correction processing for the noise-corrected image signal to output a signal level-corrected image signal; an image signal correction intensity control unit for determining correction intensity of the signal level correction processing in the image signal correcting unit; a signal extension estimating unit for estimating a signal extension degree of signal extension based on the determined correction intensity; and a noise correction intensity control unit for calculating and controlling correction intensity of the noise correction processing in the noise correcting unit.08-08-2013
20120062798TV SIGNAL DISTRIBUTION FILTER HAVING PLANAR INDUCTORS - TV signal distribution filter device which includes at least one tuneable band-pass filter circuit, each tuneable filter circuit having a signal input for receiving a TV signal, a signal output for delivering a filtered TV signal, and a plurality of components connected in a predetermined configuration between the signal input and the signal output and together being provided for filtering the received TV signal to the filtered TV signal, said plurality of components including at least a first inductor and a second inductor, each accompanied by a tuneable capacitive component and connected to a voltage node which is provided for receiving a tuning voltage for tuning the tuneable capacitive component and thereby setting a filtering parameter of the tuneable filter circuit, the first and second inductors being planar inductors which are mechanically fixed and embedded in a dielectric environment and are electro-magnetically coupled with each other.03-15-2012
20100053446PASSIVE AUDIO/VIDEO COMPONENT UNBALANCED NETWORK TO BALANCED NETWORK ADAPTER - A method and apparatus are disclosed for reducing distortions originating from a balanced link between a video transmitter connected to a first ground and a video receiver connected to a second ground, the method comprising isolating a connection to one of the first ground and the second ground and connecting the isolated connection to the other ground via a dedicated link. In particular, there is disclosed a passive circuit enabling additional channels to become available.03-04-2010

Patent applications in class Noise or undesired signal reduction

Patent applications in all subclasses Noise or undesired signal reduction