Patent application number | Description | Published |
20090074393 | Method and apparatus for auto focusing - A method and apparatus to auto focus are provided. A distance classifier to auto focus includes a distance-calculating module calculating a focal distance on the basis of blur levels of at least two images; a precise distance-calculating module calculating the exact distance to a subject when an image that is captured at the focal distance calculated by the distance-calculating module is out of focus; and a distance-calculation-correcting module correcting the distance-calculating module on the basis of the blur levels and the exact distance to the subject that is calculated by the precise distance-calculating module. | 03-19-2009 |
20090074396 | Auto-focus method, medium, and apparatus for image-capturing - An auto-focus method, medium, and apparatus for image-capturing. The auto-focus method includes obtaining a first image by placing a focus lens of a corresponding image-capturing apparatus at a first fixed position, obtaining a second image by placing the focus lens at a second fixed position; calculating blur levels of the first and second images, and determining a position of the focus lens by substituting the blur levels of the first and second images into each of a plurality of blur level relational expressions, which are derived from a plurality of pairs of images of respective corresponding objects at different distances from an image sensor module, each of the pairs of images being obtained by placing the focus lens at the first and second fixed positions, respectively. | 03-19-2009 |
20090244319 | IMAGE CAPTURING APPARATUS AND METHOD - Provided is an image capturing apparatus and method, in which the limit of the application of blurring to an input image is determined with the use of a database of recognizable blur levels, and the input image is processed by applying filtering properties corresponding to variations in digital gain and an exposure time. The image capturing apparatus includes a light reception module which receives an optical signal; and an image processing module which adjusts an exposure time-to-digital gain ratio with reference to the amount of light included in the optical signal. | 10-01-2009 |
20090316014 | Apparatus and method for capturing digital images - An apparatus and method for capturing digital images are provided. The digital capturing apparatus includes an image pickup unit obtaining light field data to change a view of a captured image and refocus the captured image, and a data processor generating a refocusing image using the light field data, wherein the image pickup unit performs optical modulation on light beams to obtain light field data of the modulated light beams so that the light beams are identified when two or more of the light beams overlap, and the data processor demodulates the light field data to obtain light field data of the light beams not subjected to the optical modulation. | 12-24-2009 |
20100085468 | APPARATUS AND METHOD OF CAPTURING IMAGE - An apparatus for capturing an image of a scene including an image capturing unit and a data processing unit. The image capturing unit may generate light field data and may include a first optical having at least two portions with at least two different fields of view, a sensing unit having a plurality of photosensors, and a second optical unit interposed between the first optical unit and the sensing unit. The data processing unit may perform at least one of change of view of the image and refocusing the generated light field data. The sensing unit may be configured to obtain an image with at least two magnifications corresponding to regions of the scene. | 04-08-2010 |
20100091133 | IMAGE PROCESSING APPARATUS AND METHOD - An image processing apparatus may include an image frame determiner to determine one standard image frame and at least one reference image frame using light field data about a scene, a point spread function determiner to determine a point spread function based on sub-pixel displacement between the standard image frame and the at least one reference image frame, an image interpolator to interpolate the standard image frame into a high-resolution standard image frame having a higher resolution than the standard image frame, and an image restorer to restore a high-resolution image by updating the high-resolution standard image frame using the generated high-resolution standard image frame, the point spread function, and the at least one reference image frame. | 04-15-2010 |
20100194926 | APPARATUS AND METHOD FOR ACQUIRING LIGHT FIELD DATA USING VARIABLE MODULATOR - Disclosed are an apparatus and method for acquiring light field data using a variable modulator. The apparatus varies a modulator located between an optical system and a sensor adaptively according to objects to be captured or a peripheral environment. Accordingly, 4-dimensional (4D) light field data optimized according to objects to be captured or according to changes in focal distance may be acquired. | 08-05-2010 |
20110069324 | Modulator, Apparatus for Obtaining Light Field Data Using Modulator, and Apparatus and Method for Processing Light Field Data Using Modulator - A technology of acquiring and processing light field data for images is provided. A light field data acquisition apparatus includes a modulator with an attenuation pattern to spatially modulate a | 03-24-2011 |
20110129165 | IMAGE PROCESSING APPARATUS AND METHOD - An image processing apparatus and image processing method capable of providing a high-resolution image for a desired position by use of light field data are provided. The image processing apparatus may determine a position of a portion of light field data among light field data corresponding to a scene, according to a desired focusing position, generate a refocusing first image by use of the position determined portion of light field data, generate a high-resolution image having a predetermined setting ratio relative to the refocusing first image, determine a ratio for local synthesis between the high-resolution image and an enlarged image of the refocusing first image by use of a similarity with respect to the position determined portion of light field data, and generate a synthesized image by synthesizing the high-resolution image and the enlarged image of the refocusing first image according to the local synthesis ratio. | 06-02-2011 |
20110175983 | APPARATUS AND METHOD FOR OBTAINING THREE-DIMENSIONAL (3D) IMAGE - An apparatus and method for obtaining a three-dimensional image. A first multi-view image may be generated using patterned light of infrared light, and a second multi-view image may be generated using non-patterned light of visible light. A first depth image may be obtained from the first multi-view image, and a second depth image may be obtained from the second multi-view image. Then, stereo matching may be performed on the first depth image and the second depth image to generate a final depth image. | 07-21-2011 |
20110310276 | OPTICAL APPARATUS AND IMAGING APPARATUS USING THE SAME - An optical apparatus and an imaging apparatus capable of facilitating capturing images with a simpler structure are provided. The imaging apparatus includes a color filter divided into a plurality of regions, each of the regions configured to allow light of a preset wavelength range to pass therethrough, a main lens disposed at a front or a rear of the color filter to allow light to pass therethrough, and an optic unit to allow the light passing through the color filter or the main lens to pass therethrough. | 12-22-2011 |
20120020555 | APPARATUS AND METHOD FOR PROCESSING IMAGES - Provided are an image processing apparatus and method for restoring a high resolution of an image based on acquired image data using color information. The image processing apparatus selects at least one pixel from among pixels corresponding to narrow-band color information of image data, and estimates wide-band color information of the selected pixel. | 01-26-2012 |
20120057040 | APPARATUS AND METHOD FOR PROCESSING LIGHT FIELD DATA USING A MASK WITH AN ATTENUATION PATTERN - Provided are an apparatus and method for processing a light field image that is acquired and processed using a mask to spatially modulate a light field. The apparatus includes a lens, a mask to spatially modulate 4D light field data of a scene passing through the lens to include wideband information on the scene, a sensor to detect a 2D image corresponding to the spatially modulated 4D light field data, and a data processing unit to recover the 4D light field data from the 2D image to generate an all-in-focus image. | 03-08-2012 |
20120200731 | COLOR RESTORATION APPARATUS AND METHOD - A color restoration apparatus is provided. The color restoration apparatus including a color correction gain generator configured to compensate for a first broad-band pixel value of a first image, which is acquired from a single-exposure environment, based on a saturation gain for compensating for a difference between a time of the saturation of a broad-band pixel value and a time of the saturation of a narrow-band pixel value, and to calculate a color correction gain based on a first narrow-band pixel value of the first image and the compensated first broad-band pixel value, and a color corrector configured to compensate for a second broad-band pixel value of a second image, which is acquired from a dual-exposure environment, based on a color gain difference compensation value for compensating for a difference between color gains applied to the second image, and to calculate a restored narrow-band pixel value based on the second narrow-band pixel value, the compensated second broad-band pixel value, and the color correction gain. | 08-09-2012 |
20130016905 | METHOD AND APPARATUS FOR CORRECTING COLOR DISTORTIONAANM PARK; Byung-kwanAACI SeoulAACO KRAAGP PARK; Byung-kwan Seoul KRAANM Choe; Won-heeAACI SeoulAACO KRAAGP Choe; Won-hee Seoul KRAANM Lee; Seong-deokAACI Seongnam-siAACO KRAAGP Lee; Seong-deok Seongnam-si KR - A method and apparatus for correcting color distortion are provided. The method includes detecting a color image of an object. The method further includes correcting color distortion of the detected color image to generate a corrected color image. The method further includes synthesizing color information of the corrected color image and detail information of the detected color image to generate a synthesized color image. | 01-17-2013 |
20130113481 | APPARATUS AND METHOD FOR COMPENSATING ARTIFACT IN HIGHER ORDER DIFFUSION MAGNETIC RESONANCE IMAGING (MRI) - An apparatus and method for compensating for an artifact of higher order diffusion Magnetic Resonance Imaging (MRI) are provided. The apparatus includes a construction unit configured to construct a diffusion q-space matrix, a correction unit configured to correct an image shift in a phase encoding direction in the constructed diffusion q-space matrix, a reconstruction processing unit configured to reconstruct a q-space of a Diffusion Spectrum Imaging (DSI) based on the corrected image shift, and a tracking processing unit to process a DSI fiber tracking using the reconstructed q-space of the DSI. | 05-09-2013 |
20130182928 | METHOD AND APPARATUS FOR CORRECTING POSITRON EMISSION TOMOGRAPHY IMAGE - An image correction method includes detecting signals emitted from a tracer introduced into a target; intermittently extracting some of the detected signals according to a code string in which different codes are arranged; generating an image of the target using the extracted signals; and correcting the generated image based on at least one characteristic of the generated image. | 07-18-2013 |
20130294670 | APPARATUS AND METHOD FOR GENERATING IMAGE IN POSITRON EMISSION TOMOGRAPHY - A method and apparatus generate an image in positron emission tomography (PET). The method and apparatus are configured to divide detected signals into sections at time intervals. The detected signals are emitted from tracers introduced into a target. The method and apparatus are also configured to generate unit signals for each of the sections by accumulating the divided signals at each respective section. The method and apparatus are further configured to classify the unit signals into groups based on characteristics of each of the unit signals, and generate the medical image of the target from the unit signals classified into the groups. | 11-07-2013 |
20140050380 | APPARATUS AND METHOD FOR GENERATING MEDICAL IMAGE USING LINEAR GAMMA RAY SOURCE - Methods and apparatuses for generating a blur model of a detector, and methods and apparatus for generating a medical image are provided. A method of generating a blur model of a detector may involve: changing locations of linear gamma ray sources along at least one line and obtaining signals emitted from the linear gamma ray sources; obtaining a point spread function (PSF) with respect to at least one voxel included in the at least one line; and generating a blur model of the detector from the PSF. | 02-20-2014 |
20140056499 | APPARATUS AND METHOD FOR GENERATING IMAGE USING CORRECTION MODEL - A method and apparatus for generating an image with a correction model are provided. The method of generating a correction model of a detector may involve: changing a location of a point source and obtaining a signal emitted from the point source; calculating at least one parameter representing a distribution characteristic of the obtained signal with respect to a plurality of projection directions at each of the changed locations; and generating the correction model of the detector based on the at least one parameter. | 02-27-2014 |
20140093134 | METHOD AND APPARATUS FOR GENERATING IMAGE - A method and an apparatus for generating images are provided. The method includes generating a first sinogram for a state of an object from among states of the object based on a motion of the object, and a second sinogram for the states, based on data obtained from the object, and determining a region of interest (ROI) of the object based on the first sinogram. The method further includes extracting, from the second sinogram, third sinograms corresponding to the ROI, and estimating motion information of the ROI based on the third sinograms. The method further includes correcting the data based on the motion information. | 04-03-2014 |
20140093151 | METHODS AND APPARATUSES FOR GENERATING A RESPONSE OF A SCANNER IN AN IMAGING APPARATUS AND MEDICAL IMAGE USING THE SAME - A method of generating a response from a scanner in an imaging apparatus, a method of generating a medical image, an apparatus configured to generate a response of a scanner, and an apparatus configured to generate a medical image are provided. The method of generating a response of a scanner includes: generating point spread functions (PSFs) for the amount of the acquired signal from a point source; and generating the response of the scanner for the amount of the signal acquired, based on the PSF. | 04-03-2014 |
20140142892 | METHOD AND APPARATUS FOR ESTIMATING POSITION DISTRIBUTION OF RADIATION EMISSION - A method and apparatus for estimating a position distribution of radiation emission The method and apparatus include obtaining a time difference between radiations detected by a pair of detectors, and creating a probability distribution function (PDF) indicating the probability of where the radiations actually were or may have been emitted. The PDF may be created based on the time difference and timing resolutions of the pair of detectors. | 05-22-2014 |
20140185898 | IMAGE GENERATION METHOD AND APPARATUS - An image generation method includes classifying data according to a motion period of an object; generating respective sinograms from the classified data; updating an intermediate sinogram for an intermediate image using the sinograms; generating an updated intermediate image by performing a back projection on the updated intermediate sinogram; and generating an image in which a motion of the object is compensated by sequentially applying the sinograms in a process of generating the updated intermediate image. | 07-03-2014 |
20150055847 | IMAGE PROCESSOR, IMAGE RECONSTRUCTION METHOD, AND RADIATION IMAGING APPARATUS - The image reconstruction method includes performing a forward projection of a first image of an object using a line integral-based value and a point spread function (PSF)-based value to acquire a forward projection value, and performing a back projection of raw image data using the forward projection value to acquire a second image of the object. | 02-26-2015 |