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| Number | Title | Issue Date |
| 8107759 | Method of detecting low luminance noise and image compression apparatus using the same In a photograph and image compression system equipped with a camera, a low luminance noise cancellation algorithm is selectively applied to photographs and video images including a low luminance noise, by determining whether the low luminance noise is included in a ... | 01/31/2012 |
| 8098952 | Method and device for removing image noise based on the median filter A method and an apparatus for image denoising based on medium filter is disclosed according to the present invention. Such method and apparatus may be used to remove linear noise and random noise for the sensor, as well as the bad points in the sensor image, and to ... | 01/17/2012 |
| 7945110 | Methods and apparatuses for enhancing image quality A method for enhancing image quality includes: performing a peaking operation on an image signal to generate a peaking signal; selecting a plurality of pixels from the peaking signal and the image signal; and deciding a luminance value for a target pixel of the imag... | 05/17/2011 |
| 7912311 | Techniques to filter media signals A system, apparatus, method and article to filter media signals are described. The apparatus may include a media processor. The media processor may include an image signal processor having multiple processing elements to concurrently process a pixel matrix by execut... | 03/22/2011 |
| 7822288 | Method and system for improved processing of image data The present invention is a method and system for deriving histograms for neighborhoods of pixels in an image that uses subtractive image regions to increase the size of overlapping regions of regions of series of adjacent image pixels to a size equal to the size of ... | 10/26/2010 |
| 7590301 | Method and system for correcting defective pixels of a color image A method and system for correcting defective pixels of a color image, which first performs an interpolation on a Bayer image captured by an image sensor to thus reconstruct red, green and blue (RGB) colors corresponding to each pixel and obtain an RGB image, then co... | 09/15/2009 |
| 7454080 | Methods and apparatus for improving quality of block-transform coded images Block-based image processing methods and apparatus that provide a reduction in block-transform image coding artifacts are described. In various embodiments, the invention is directly incorporated into a decoding process. In such embodiments, transform coefficients a... | 11/18/2008 |
| 7403666 | Apparatus and method of filtering digital information A filtering apparatus calculates a median of image data that includes nine pixel values arranged in a window of 3*3. First, an input circuit receives as an input the image data, divides the data into groups each having three pixels, and outputs. The pixel values of ... | 07/22/2008 |
| 7394944 | Method and system for finding spatial medians in a sliding window environment A method for determining a median value in a sliding window environment is provided. The method includes creating a merge tree defining leaf nodes associated with columns corresponding to a first position of a sliding window. A display controller and a computer read... | 07/01/2008 |
| 7391447 | Method and apparatus for removing noise from a digital image An apparatus and method of removing fixed pattern noise in a digital image processing apparatus are provided. The apparatus includes a controlling unit adjusting a number of image frames of a same image photographed by an imaging device and an exposure time of a shu... | 06/24/2008 |
| 7382406 | Noise reduction system, noise reduction method, recording medium, and electronic camera A noise reduction system comprises an inputting unit inputting image data, and a noise reduction unit performing a process for removing noise of the image data input by the inputting unit. The noise reduction unit includes a representative value calculating unit cal... | 06/03/2008 |
| 7379615 | Method for space-time filtering of noise in radiography To reduce the fluoroscopic noise in an image I acquired at a date t, the pixels of this image are paired with the pixels of an image I′ acquired at a date t−1. For a pixel with coordinates (x,y) of the image I, a convolution is done with a core U equivalent to a... | 05/27/2008 |
| 7369712 | Automated statistical self-calibrating detection and removal of blemishes in digital images based on multiple occurrences of dust in images A method automatically corrects dust artifact within images acquired by a system including a digital acquisition device including a lens assembly. Multiple original digital images are acquired with the digital acquisition device. Probabilities that certain pixels co... | 05/06/2008 |
| 7362376 | Method and apparatus for video deinterlacing and format conversion A method for deinterlacing a picture is disclosed. The method generally includes the steps of (A) generating a plurality of primary scores by searching along a plurality of primary angles for an edge in the picture proximate a location interlaced with a field of the... | 04/22/2008 |
| 7355757 | Fast edge reconstruction with upscaling for pulse width modulation rendering A selected antialiasing technique is applied to non-labeled gray-scale or color image data by deconstructing an image into a set of binary images, applying the antialiasing method to each binary image to generate antialiased images, and combining the antialiased ima... | 04/08/2008 |
| 7356197 | Variable tap filter architecture for image processing An embodiment of the present invention is an apparatus to filter two-dimensional (2-D) data. A first filter processes two-dimensional (2-D) data in a block of pixels in a first dimension for a plurality of filter sizes. The block has a swath. A register file stores ... | 04/08/2008 |
| 7345708 | Method and apparatus for video deinterlacing and format conversion A method for deinterlacing a picture is disclosed. The method generally includes the steps of (A) determining a protection condition by performing a static check on the picture in a region around a location interlaced with a first field of the picture, (B) calculati... | 03/18/2008 |
| 7340109 | Automated statistical self-calibrating detection and removal of blemishes in digital images dependent upon changes in extracted parameter values A method of automatically correcting dust artifact within images acquired by a system including a digital camera includes determining that certain pixels correspond to dust artifact regions within a first digitally-acquired image. The dust artifact regions are assoc... | 03/04/2008 |
| 7324701 | Image noise reduction An image processing apparatus determines whether or not a target pixel TP which is the object of the smoothing process is an edge-forming pixel based on the edge level (gradient g). If the pixel is determined to be an edge-forming pixel, the smoothing process employ... | 01/29/2008 |
| 7315658 | Digital camera A digital camera that automatically corrects dust artifact regions within acquired images by compiling a statistical dust map from multiple images acquired under different image acquisition conditions includes an optical system for acquiring an image including a len... | 01/01/2008 |
| 7310450 | Method of detecting and correcting dust in digital images based on aura and shadow region analysis A method of automatically correcting dust artifact regions within images acquired by a digital image acquisition system including a digital camera with a lens assembly includes determining probabilities that certain pixels within multiple digitally-acquired images c... | 12/18/2007 |
| 7308153 | Weighted absolute difference based noise reduction method and apparatus The invention is a method and apparatus for reducing noise in an image. The method and apparatus involves calculating a plurality of directional operators, comparing the directional operators to a predetermined threshold, and applying a filter responsive to the comp... | 12/11/2007 |
| 7301552 | Image forming apparatus with printing data correction arrangement An image forming apparatus with a plurality of driven elements has a memory for storing driving data on each of the driven elements for driving the driven elements, and a computing unit that reads, from the memory, driving data on a driven element corresponding to a... | 11/27/2007 |
| 7295344 | Image processing method and image processing apparatus, program and recording medium, and image forming apparatus A parameter representing whether an effective density pixel exists in an objective image is calculated. As to each interest pixel in the objective image having one pixel neighboring a downstream side in a first direction, the interest pixel is defined as an effectiv... | 11/13/2007 |
| 7251053 | Image processing apparatus and method The sharpness of a digital image is enhanced by an edge enhancement process in which the edge adjustment range is adjusted. The image processing apparatus of the present invention determines the edge enhancement range by calculation using a weighting matrix. Specifi... | 07/31/2007 |
| 7245400 | Method and device for proofing raster print data while maintaining the raster information The screened printing data are subjected to a filtering method, the raster information being maintained. Intermediate tonal values are produced by the filtering method, using the binary tonal values, the intermediate tonal values being configured in such a way that,... | 07/17/2007 |
| 7237159 | Test apparatus for testing an electronic device There is provided a test apparatus that tests an electronic device. The test apparatus includes: a plurality of test modules operable to supply and receive signals to/from the electronic device; a plurality of return circuits operable to receive fail timing signals ... | 06/26/2007 |
| 7228002 | Inverse halftoning process Performing inverse halftoning on a halftoned image includes smoothing the halftoned image using a two-dimensional filter to produce a smoothed image, detecting edge areas in the smoothed image, performing lowpass filtering on non-edge areas of the smoothed image, an... | 06/05/2007 |
| 7228003 | Flat-field, panel flattening, and panel connecting methods A plurality of panels are assembled into a single image. Each of the panels may have different intensities throughout the panel, as well as non-uniformities between panels. The panels are modified using flat-field calibration, panel flattening, and panel connecting ... | 06/05/2007 |
| 7206461 | Digital image acquisition and processing system A digital image acquisition and processing system that automatically corrects dust artifact regions within acquired images by compiling a statistical dust map from multiple images acquired under different image acquisition conditions is provided. The system includes... | 04/17/2007 |
| 7194143 | Method of enhancement of the visual display of images and other visual data records An digital image input, possibly being either pre-compressed or decompressed, is enhanced; its edges are preserved while any compression artifacts, like blocking and ringing, are simultaneously reduced. The enhancement method enhances images with luminance and chrom... | 03/20/2007 |
| 7190842 | Elementary cell of a linear filter for image processing The present invention relates to an elementary cell of a linear filter for image processing, as well as to a corresponding module, element and process. The cell comprises a data circulation output and a calculation output, as well as a main delay line and an auxilia... | 03/13/2007 |
| 7177463 | Image processing apparatus and method A surrounding pixel reference unit reads out and stores image data having a predetermined size from a line buffer. A color judgment unit detects the color of the image (reference image) stored in the surrounding pixel reference unit. A parameter determination unit d... | 02/13/2007 |
| 7173968 | Method for coding and decoding a digitalized image A method and an arrangement in which a digitized image with picture elements is allocated to a number of image segments. The image segments, preferably image blocks, are spread such that interspaces remain between the image blocks to be encoded. The interspaces are ... | 02/06/2007 |
| 7165024 | Inferring hierarchical descriptions of a set of documents A method automatically determines groups of words or phrases that are descriptive names of a small set of documents, as well as infers concepts in the small set of documents that are more general and more specific than the descriptive names, without any prior knowle... | 01/16/2007 |
| 7162073 | Methods and apparatuses for detecting classifying and measuring spot defects in an image of an object A method is provided for detecting spot defects on an object when an allowable variation (called the “background”) in the appearance of the object can be modeled. Methods are also provided for measuring and classifying detected spot defects. An alignment model i... | 01/09/2007 |
| 7162098 | System and method for increasing temporal and spatial capacity of systems that amplitude quantize data prior to processing A system and method for collecting relatively high resolution amplitude data with a conventional sensing device from a signal source that is sampled at a relatively low characteristic scan resolution, and then generating relatively high scan resolution, relatively l... | 01/09/2007 |
| 7158189 | Adaptive non-linear noise reduction techniques An impulse-reducing module (200) reduces random noise in video pixels by providing an impulse detector (244) and an impulse reducer, such as a median filter (250). The impulse detector (244) generates filter control signals in response to... | 01/02/2007 |
| 7158660 | Method and apparatus for detecting structures of interest A method to detect a structure of interest includes shading a target from ambient light. A first plurality of images is acquired from the target. Background in the first plurality of images is reduced to minimize or eliminate brightness variation in the images and t... | 01/02/2007 |
| 7148998 | System and method for automatic descreening of digital images A system and method for automatic descreening of a digital image is disclosed. The method comprises automatically detecting, prior to a final scan of the document, the presence of a predefined visual artifact in a sample region of an image of the document being scan... | 12/12/2006 |
