Adaptive Filter Patents (Class 382/261)
  • Patent number: 10339641
    Abstract: The present disclosure relates to an image processing apparatus and method and decoding apparatus. The image processing apparatus may comprises a receiver for receiving an image and an image processor for dividing the image into a plurality of regions, and performing filtering by iteratively applying at least one filter to each of the plurality of regions in the image, wherein the at least one filter comprises an asymmetric filter that uses an asymmetric filtering window having height and width in different size.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: July 2, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Dale Yim
  • Patent number: 10277203
    Abstract: A digital filter has an assigned filter function with assigned filter coefficients, an input receiving input samples, another input receiving confidence values, and an output. Each input sample value is associated to an input confidence value, wherein the filter output depends on the input samples, the input confidence values as well as the filter coefficients. The filter contains multiple accumulators, wherein an output sample is produced after a predetermined number of sample values wherein associated confidence values have been input to the filter.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: April 30, 2019
    Assignee: MICROCHIP TECHNOLOGY GERMANY GMBH
    Inventors: Axel Heim, Martin Hoch
  • Patent number: 10235474
    Abstract: Techniques herein are for navigation data structures for graph traversal. In an embodiment, navigation data structures that a computer stores include: a source vertex array of vertices; a neighbor array of dense identifiers of target vertices terminating edges; a bidirectional map associating, for each vertex, a sparse identifier of the vertex with a dense identifier of the vertex; and a vertex array containing, when a dense identifier of a source vertex is used as an offset, a pair of offsets defining an offset range, for use with the neighbor array. The source vertex array, using the dense identifier of a particular vertex as an offset, contains an offset, into a neighbor array, of a target vertex terminating an edge originating at the particular vertex. The neighbor array contiguously stores dense identifiers of target vertices terminating edges originating from a same source vertex.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: March 19, 2019
    Assignee: Oracle International Corporation
    Inventors: Michael Haubenschild, Sungpack Hong, Hassan Chafi, Korbinian Schmid, Martin Sevenich, Alexander Weld
  • Patent number: 10217201
    Abstract: An image processing method comprises: identifying a weak edge comprising a plurality of weak edge pixels and a strong edge comprising a plurality of strong edge pixels in an input image; filtering at least a part of said input image to obtain a smoothed image, during which said weak edge in said input image is filtered with a first filter and said strong edge in said input image is filtered with a second filter having a smoothness less than that of said first filter; acquiring edge information of said input image based on said input image and said smoothed image; and generating an output image based on said edge information and said smoothed image. The present invention further relates to an image processing system and an imaging system.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: February 26, 2019
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Ming Yan, Kun Tao, Dejun Wang
  • Patent number: 10147014
    Abstract: An image processing apparatus and method including executing high-pass filtering in a column direction on the pixel values of original image data read from a flat panel detector to obtain first image data, and subtracting a value obtained by converting each of the pixel values of the first image data in accordance with an absolute value of a statistic calculated from pixel values in the same pixel row of the first image data from the value of a corresponding pixel of the original image data to obtain processed image data.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: December 4, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Keiji Tsuchiya
  • Patent number: 10063891
    Abstract: A data compression method wherein said data comprises noise and information, comprising a data acquisition step, a pre-compression parameter selection step, wherein said pre-compression parameters are linked to an information loss, a compression step, and a storage step, the compression step being characterized in that it comprises a lossy pre-compression for removing some noise of the data, carried out using the pre-compression parameters selected in the selection step followed by lossless compression for compressing the remaining data.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: August 28, 2018
    Assignee: Université de Genève
    Inventors: Anthony Martin, Hugo Zbinden, Bruno Sanguinetti
  • Patent number: 10057586
    Abstract: Depth based block partitioning in high efficiency video coding is provided by partitioning a video image block into different partitions using a binary segmentation mask. A determination is made whether to filter pixels at a boundary between the partitions. A particular pixel is not filtered in response to each adjacent pixel in vertical and horizontal planes in relation to the particular pixel having a same value. The particular pixel is filtered in response to any adjacent pixel in the vertical and horizontal planes in relation to the particular pixel having a different value than any other adjacent pixel in the vertical and horizontal planes in relation to the particular pixel. Pixels are filtered pursuant to a filtering process in response to a filtering determination.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: August 21, 2018
    Assignees: Futurewei Technologies, Inc., Santa Clara University
    Inventors: Zhouye Gu, Jianhua Zheng, Nam Ling, Chen-Xiong Zhang
  • Patent number: 10038906
    Abstract: A content receiver and a method for controlling the same are provided. The content receiver, for example, may include, but is not limited to, a communication system configured to receive video content comprising a plurality of video frames from a content source, and a video analyzer configured to determine when compression of the video content is causing blockiness in one or more of the plurality of video frames, and trigger at least one content receiver response when the compression of the video content is causing blockiness in one or more of the plurality of video frames.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: July 31, 2018
    Assignee: SLING MEDIA PVT. LTD.
    Inventors: Sushant Sudhir Kulkami, Arunoday Thammineni, Yatish J. Naik Raikar, Varunkumar B. Tripathi
  • Patent number: 10037459
    Abstract: A system and process of generating an improved image for optical character recognition is disclosed comprising dynamically obtaining a video source image comprising one or more characters on a background using a video capture device; detecting edges of at least one of the one or more characters that comprise the video source image; determining a sharpness value for the edges of the at least one of the one or more characters, wherein the sharpness value is related to the ability of the video capture device to distinguish the edges of the characters from the background; and indicating at least when the sharpness value is at a predetermined value or within a predetermined range of values.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: July 31, 2018
    Assignee: Sage Software, Inc.
    Inventor: Scott E. Barton
  • Patent number: 9996902
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for upscaling an image. One of the methods includes upscaling a low resolution image, creating first pixel subsets of the first upscaled image, creating second pixel subsets of a high resolution image, determining, for each subset in the pixel subsets, a value of a property of the pixel subset, determining, for each subset in the pixel subsets, a group of subsets to which the corresponding pixel subset belongs using the value of the property, and determining, for each of the groups of subsets, a filter to apply to each of the first pixel subsets that correspond to the pixel subsets in the group to create a final pixel subset that approximates the corresponding second pixel subset using the first pixel subset, a combination of all of the final pixel subsets representing a second upscaled image.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: June 12, 2018
    Assignee: Google LLC
    Inventors: Peyman Milanfar, Yaniv Romano
  • Patent number: 9984305
    Abstract: This invention transforms a list of feature points in raster scan order into a list of maxima suppressed feature points. A working buffer has two more entries than the width of the original image. Each entry is assigned to an x coordinate of the original image. Each entry stores a combined y coordinate and reliability score for each feature point in the original list. This process involves a forward scan and a backward scan. For each original feature point its x coordinate defines the location within the working buffer where neighbor feature points would be stored if they exist. The working buffer initial data and the y coordinates assure a non suppress comparison result if the potential neighbors are not actual neighbors. For actual neighbor data, the y coordinates match and the comparison result depends solely upon the relative reliability scores.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: May 29, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Deepak Kumar Poddar, Pramod Kumar Swami, Prashanth Viswanath
  • Patent number: 9906798
    Abstract: An image encoding method includes: selecting one motion prediction model from a plurality of motion prediction models including a translational motion model and a non-translational motion model for each of blocks in the image; performing motion prediction using the selected motion prediction model to generate a prediction image; generating a reconstructed image using the prediction image; determining that filtering is to be performed if the non-translational motion model is selected for at least one of a first block and a second block that is adjacent to the first block; and performing the filtering on a boundary between the reconstructed image for the first block and the reconstructed image for the second block if it is determined that the filtering is to be performed.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: February 27, 2018
    Assignee: SUN PATENT TRUST
    Inventors: Matthias Narroschke, Hisao Sasai
  • Patent number: 9865037
    Abstract: Known super-resolution algorithms are inefficient due to a high degree of redundant calculations, require search operations such as block matching for finding nearest neighbors, and achieve only small magnification factors. An improved method for upscaling an image comprises steps of upscaling the image by pixel interpolation to obtain a coarse upscaled image, and, for each pixel of the coarse upscaled image, determining a nonlinear regression function for a patch of pixels around a current pixel of the coarse upscaled image and enhancing the value of the current pixel by adding the result of the nonlinear regression function, wherein a pixel of an upscaled image is obtained. The nonlinear regression function is obtained from a trained regression tree, based on geometric features of the patch.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: January 9, 2018
    Assignee: THOMSON LICENSING
    Inventor: Jordi Salvador Marcos
  • Patent number: 9819914
    Abstract: A method for generating and employing a camera noise model, performed by a processing unit, is introduced to at least contain the following steps. A first frame is obtained by controlling a camera module via a camera module controller. A camera noise model is generated on-line according to the content of the first frame, which describes relationships between pixel values and standard deviations. A second frame is obtained by controlling the camera module via the camera module controller. The content of the second frame is adjusted using the camera noise model, and the second frame, which has been adjusted, is stored in a frame buffer.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: November 14, 2017
    Assignee: VIA ALLIANCE SEMICONDUCTOR CO., LTD.
    Inventors: Weiman Kong, Xu Wang, Aimin Liang
  • Patent number: 9779750
    Abstract: A cue, for example a facial expression or hand gesture, is identified, and a device communication is filtered according to the cue.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: October 3, 2017
    Assignee: Invention Science Fund I, LLC
    Inventors: Paul G. Allen, Edward K. Y. Jung, Royce A. Levien, Mark A. Malamud, John D. Rinaldo, Jr.
  • Patent number: 9767538
    Abstract: An image capture application captures a sequence of images via a digital camera. The sequence of images may have undesirable levels of blurriness due to the motion of objects in the field of view of the digital camera or due to movement of the digital camera itself. A deblur engine within the image capture application generates image segments within one of the captured images, where a given image segment includes pixel values that move coherently between different images in the sequence. The deblur engine then deblurs each image segment based on the coherent motion of each different image segment and combines the resultant, deblurred image segments into a deblurred image. Advantageously, blurriness caused by the combined effects of moving objects and camera motion may be reduced, thereby improving the ability of a digital camera to provide high-quality images. As such, the user experience of digital photography may be enhanced.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: September 19, 2017
    Assignee: NVIDIA Corporation
    Inventor: Kari Pulli
  • Patent number: 9741102
    Abstract: A statistical analysis is performed on pixel values of at least one region of interest in an image obtained by substantially uniform irradiation of an x-ray detector and deciding upon the presence of a source of x-ray beam in-homogeneity by comparing the results of the statistical analysis with at least one predetermined acceptance criterion.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: August 22, 2017
    Assignee: AGFA HEALTHCARE NV
    Inventors: Marc Cresens, Herman Van Goubergen
  • Patent number: 9710715
    Abstract: An image processing system, an image processing device, and image processing method are provided. Each of the image processing system, the image processing device, and the image processing method includes dividing an image into a plurality of areas according to a predetermined division condition, measuring an optical transmittance of each of the plurality of divided areas or data correlating with the optical transmittance as transmittance data, calculating the optical transmittance or the data correlating with the optical transmittance from the image as the transmittance data, determining a parameter for adjusting a contrast for each of the plurality of areas according to the transmittance data obtained by the measuring or the calculating, and adjusting a contrast of each one of the plurality of areas using the parameter determined by the determining.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: July 18, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Taro Kikuchi, Takashi Uozumi
  • Patent number: 9693063
    Abstract: A content receiver and a method for controlling the same are provided. The content receiver, for example, may include, but is not limited to, a communication system configured to receive video content comprising a plurality of video frames from a content source, and a video analyzer configured to determine when compression of the video content is causing blockiness in one or more of the plurality of video frames, and trigger at least one content receiver response when the compression of the video content is causing blockiness in one or more of the plurality of video frames.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: June 27, 2017
    Assignee: Sling Media PVT Ltd.
    Inventors: Sushant Sudhir Kulkarni, Arunoday Thammineni, Yatish J. Naik Raikar, Varunkumar B. Tripathi
  • Patent number: 9639980
    Abstract: An image processing apparatus comprises an acquiring section that acquires DEM data indicating digital elevation of each lattice-shaped area in a predetermined map region, a selecting section that selects at least one of a plurality of line filters that filters data which is continuous in one direction in the map region and a plurality of matrix filters that filters data constituting a two-dimensional region in the map region, a filter processing section that conducts filter processing of the DEM data acquired by the acquiring section by a filter selected by the selecting section, and an outputting section that outputs the DEM data after being filtered in the filter processing.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: May 2, 2017
    Assignee: Japan Oil, Gas and Metals National Corporation
    Inventors: Makoto Inoue, Taro Yajima
  • Patent number: 9619862
    Abstract: This disclosure pertains to novel devices, methods, and computer readable media for performing raw camera noise reduction using a novel, so-called “alignment mapping” technique to more effectively separate structure from noise in an image, in order to aid in the denoising process. Alignment mapping allows for the extraction of more structure from the image and also the ability to understand the image structure, yielding information for edge direction, edge length, and corner locations within the image. This information can be used to smooth long edges properly and to prevent tight image details, e.g., text, from being overly smoothed. In alignment maps, the amount of noise may be used to compute thresholds and scaling parameters used in the preparation of the alignment map. According to some embodiments, a feature map may also be created for the image. Finally, the image may be smoothed using the created feature map as a mask.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: April 11, 2017
    Assignee: Apple Inc.
    Inventor: Mark Zimmer
  • Patent number: 9578320
    Abstract: Apparatus, methods, and other embodiments associated with correcting defects in an image sensor output are described. According to one embodiment, an imaging device includes image sensor array logic, calibrated noise logic, and defect logic. The image sensor array logic is configured to generate an image array of output pixels in a Bayer pattern. The calibrated noise logic is configured to generate a noise estimate for each pixel. The defect logic is configured to detect a potential defect in a pixel-under-test of the image array of output pixels based on the noise estimate.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: February 21, 2017
    Assignee: Marvell International Ltd.
    Inventor: Huai Dong Li
  • Patent number: 9569880
    Abstract: A method, graphics processing unit, and system are described herein. The method for adaptive anisotropic filtering includes calculating a number of ways of anisotropy based on a computed level of detail of a texture map and applying a bilinear low pass filter to a texture map's closest two MIP maps using a processor. An effective number of ways and filter sizes may be computed on each of the closest two closest MIP maps. Additionally, the closest two MIP maps may be sampled at their respective effective number of ways. The method also includes applying a corresponding sized low pass filters to each of the closest two MIP maps, and combining the filtered closest two MIP maps using a weighted sum based on a fractional part of a computed level of detail.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: February 14, 2017
    Assignee: Intel Corporation
    Inventors: Prosun Chatterjee, Larry Seiler, Joy Chandra, Benjamin R. Pletcher
  • Patent number: 9569822
    Abstract: In embodiments of removing noise from an image via efficient patch distance computations, weights are computed for patches of pixels in a digital image, and the computed weights are multiplied by respective offset values of offset images that are pixelwise shifted images of the entire digital image. The weights can be applied to the pixels in the digital image on a patch-by-patch basis to restore values of the pixels. Additionally, the digital image can be pixelwise shifted to generate the offset images of the digital image, and the digital image is compared to the offset images. Lookup tables of pixel values can be generated based on the comparisons of the digital image to the offset images, and integral images generated from the lookup tables. Distances to the patches of pixels in the digital image are computed from the integral images, and the computed weights are based on the computed distances.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: February 14, 2017
    Assignee: Adobe Systems Incorporated
    Inventors: Chih-Yao Hsieh, Yuyan Song, Zhe Lin
  • Patent number: 9571856
    Abstract: Techniques and tools for conversion operations between modules in a scalable video encoding tool or scalable video decoding tool are described. For example, given reconstructed base layer video in a low resolution format (e.g., 4:2:0 video with 8 bits per sample) an encoding tool and decoding tool adaptively filter the reconstructed base layer video and upsample its sample values to a higher sample depth (e.g., 10 bits per sample). The tools also adaptively scale chroma samples to a higher chroma sampling rate (e.g., 4:2:2). The adaptive filtering and chroma scaling help reduce energy in inter-layer residual video by making the reconstructed base layer video closer to input video, which typically makes compression of the inter-layer residual video more efficient. The encoding tool also remaps sample values of the inter-layer residual video to adjust dynamic range before encoding, and the decoding tool performs inverse remapping after decoding.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: February 14, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Shijun Sun, Shankar Regunathan, Chengjie Tu, Chih-Lung Lin
  • Patent number: 9558582
    Abstract: An image processing method and an image processing apparatus which remove the effects of cosmic rays, noise and defective pixels without losing data in a specified time and which can correct image data efficiently and with high accuracy are provided. An image processing method of performing correction processing on an abnormal value of X-ray image data is provided which includes the steps of: (S3) determining whether or not there exists a target element with intensity significantly different from intensity of peripheral elements, in a three dimensional space formed with a space axis and a time axis defined by a series of captured image frames; and (S9) replacing the intensity of the target element with a replacement value calculated from the intensity of peripheral elements.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: January 31, 2017
    Assignee: RIGAKU Corporation
    Inventors: Takuto Sakumura, Yasukazu Nakaye, Koichi Kajiyoshi, Satoshi Mikusu
  • Patent number: 9560382
    Abstract: Apparatus, systems and methods for adaptively reducing blocking artifacts in block-coded video are disclosed. In one implementation, a system includes processing logic at least capable of deblock filtering at least a portion of a line of video data based, at least in part, on edge information and texture information to generate at least a portion of a line of deblocked video data, and an image data output device responsive to the processing logic.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: January 31, 2017
    Assignee: Intel Corporation
    Inventors: Jorge E. Caviedes, Mahesh M. Subedar, Khasim S. Dudekula
  • Patent number: 9554085
    Abstract: Embodiments of the present disclosure disclose a method and a device for dynamically controlling quality of a video displaying on a display associated to an electronic device is provided. The method comprises detecting current eye position of a user and identifying at least one region of interest (ROI) on a display screen of the display device based on the current eye position of the user. Then, the method comprises predicting next position of the eye based on at least one of the current eye position of the user or the at least one ROI. Also, the method comprises converting the SD video in to a high definition (HD) video displayed on the ROI on the display screen associated with the current and next position of the eye. Further, the method comprises displaying the HD video on the ROI of the display screen.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: January 24, 2017
    Assignee: Wipro Limited
    Inventors: Manjunath Ramachandra Iyer, Jijith Nadumuri Ravi, Vijay Garg
  • Patent number: 9519953
    Abstract: An image processing apparatus includes: a representative value calculation unit that selects a designation area from a first image, and that calculates a representative value of each of the color components in the designation area, a class classification unit that performs class classification on the designation area, a coefficient reading unit that reads a coefficient that is stored in advance, a color component conversion unit that sets the pixel value relating to a predetermined pixel within the designation area to be a prediction tap, sets the pixel value of one color component, to be a reference, and converts the pixel value of each color component into a conversion value, and a product and sum calculation unit that sets the conversion value to be a variable and calculates each of the pixel values of a second image, by performing product and sum calculation which uses the coefficient which is read.
    Type: Grant
    Filed: March 21, 2014
    Date of Patent: December 13, 2016
    Assignee: SONY CORPORATION
    Inventors: Akihiro Okumura, Ichiro Fujisawa, Katsutoshi Ando, Takashi Tsuchiya
  • Patent number: 9514366
    Abstract: This disclosure provides vehicle detection methods and systems including irrelevant search window elimination and/or window score degradation. According to one exemplary embodiment, provided is a method of detecting one or more parked vehicles in a video frame, wherein candidate search windows are limited to one or more predefined window shapes. According to another exemplary embodiment, the method includes degrading a classification score of a candidate search window based on aspect ratio, window overlap area and/or a global maximal classification.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: December 6, 2016
    Assignee: Xerox Corporation
    Inventors: Stuart Alan Schweid, Orhan Bulan, Yao Rong Wang, Wencheng Wu, Robert Paul Loce
  • Patent number: 9510016
    Abstract: Methods and apparatus are provided for video coding and decoding with reduced bit-depth update mode and reduced chroma sampling update mode. An apparatus includes an encoder for encoding at least a portion of a picture using at least one of a reduced bit-depth update mode and a reduced chroma sampling update mode that respectively reduces at least one of a bit-depth and a chroma sampling of a residue signal corresponding to the portion.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: November 29, 2016
    Assignee: Thomson Licensing
    Inventors: Cristina Gomila, Oscar Divorra Escoda, Peng Yin, Joel Sole
  • Patent number: 9508128
    Abstract: The present invention provides an image-correction system, including an image-capture module, a first calculation module, a second calculation module and an output module. The image-capture module obtains an input image and a guide image. The first calculation module obtains a first correction image according to a first parameter and a second parameter, obtains the first parameter according to the mean value of the guide image, a variance value of the guide image, a mean value of the input image and a smooth function, and obtains the second parameter according to the first parameter, the mean value of the guide image and the mean value of the input image. The second calculation module obtains the ratio value of the mean value of the guide image and the variance value of the guide image. The output module outputs the first correction image.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: November 29, 2016
    Assignee: SILICON OPTRONICS, INC.
    Inventor: Chun-Hung Lin
  • Patent number: 9498177
    Abstract: A method is disclosed for reconstructing image data of an examination object from measured data, the measured data being captured during a rotating movement of a radiation source of a computed tomography system around the examination object. In at least one embodiment, different iteration images of the examination object are determined successively from the measured data by way of an iterative algorithm, wherein with the iterative algorithm the current iteration image at any one time is high-pass-filtered and weighted as a function of contrast using a variable which contains contrast information relating to the current iteration image at that time.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: November 22, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Herbert Bruder, Thomas Flohr, Rainer Raupach, Martin Sedlmair, Heinrich Wallschlager
  • Patent number: 9456111
    Abstract: A system and method of content adaptive pixel intensity processing are described. In video processing system, due to various mathematic operations applied to the data, the processed video data may be become exceeding a range of original data and result in artifacts. Content adaptive clipping method is disclosed which takes into account the dynamic characteristics of the video data. Accordingly the method configures the video data into a predefined set which can be a partial picture, a frame or a group of frames. The data range of the original associated with the predefined set is determined The processed video data is clipped according to the range computed for the predefined set.
    Type: Grant
    Filed: November 26, 2010
    Date of Patent: September 27, 2016
    Assignee: MEDIATEK INC.
    Inventors: Chih-Ming Fu, Ching-Yeh Chen, Yu-Wen Huang
  • Patent number: 9432670
    Abstract: A method and apparatus for sample adaptive offset (SAO) compensation of reconstructed video data are disclosed. In one embodiment, the relation between the current pixel and said one or more neighboring pixels is stored so that the SAO compensated current pixel can replace the current pixel without buffering the to-be-processed pixels for classification. The SAO process may be performed on a region by region basis to adapt to the local characteristics of the picture.
    Type: Grant
    Filed: January 11, 2015
    Date of Patent: August 30, 2016
    Assignee: MEDIATEK INC.
    Inventors: Chih-Ming Fu, Ching-Yeh Chen, Chia-Yang Tsai, Yu-Wen Huang, Shaw-Min Lei
  • Patent number: 9402088
    Abstract: The present disclosure relates to deblocking filtering, which may be advantageously applied for block-wise encoding and decoding of images or video signals. In particular, the present disclosure relates to an improved memory management in an automated decision on whether to apply or skip deblocking filtering for a block and to selection of the deblocking filter. The decision is performed on the basis of a segmentation of blocks in such a manner that memory usage is optimized. Preferably, the selection of appropriate deblocking filters is improved so as to reduce computational expense.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: July 26, 2016
    Assignee: SUN PATENT TRUST
    Inventors: Matthias Narroschke, Semih Esenlik, Thomas Wedi
  • Patent number: 9380226
    Abstract: Optimization of image acquisition relative resource usage, particularly power, is accomplished by use of a beehive algorithm, inspired by observation of the way that bees communicate foraging information by a dance. Analysis of relative gain associated with captured pixels facilitates isolation of one or more areas of particular interest for focusing one or more subsequent image capture operations. Selective enablement of picture acquisition elements targeting each isolated area facilitates obtaining images containing needed or useful information while minimizing resource use.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: June 28, 2016
    Assignee: Toshiba America Electronic Components, Inc.
    Inventor: Rakesh Sethi
  • Patent number: 9369735
    Abstract: Apparatus, systems and methods for adaptively reducing blocking artifacts in block-coded video are disclosed. In one implementation, a system includes processing logic at least capable of deblock filtering at least a portion of a line of video data based, at least in part, on edge information and texture information to generate at least a portion of a line of deblocked video data, and an image data output device responsive to the processing logic.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: June 14, 2016
    Assignee: Intel Corporation
    Inventors: Jorge E Caviedes, Mahesh Subedar, Khasim S Dudekula
  • Patent number: 9349185
    Abstract: An image processing device includes: a non-target region detecting unit that detects a region that is not to be examined as a non-target region from an image; a pixel-of-interest region setting unit that sets a pixel-of-interest region in a predetermined area including a pixel-of-interest position in the image; a surrounding region determining unit that determines a surrounding region, which is an area for acquiring information for use in forming a reference plane with respect to the pixel-of-interest position, based on the non-target region; a reference plane forming unit that forms the reference plane based on the information in the surrounding region; and an outlier pixel detecting unit that detects an outlier pixel having a pixel value numerically distant from circumferential values based on a difference between corresponding quantities of the reference plane at each pixel position and of the original image.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: May 24, 2016
    Assignee: OLYMPUS CORPORATION
    Inventors: Takashi Kono, Yamato Kanda, Makoto Kitamura, Takehiro Matsuda, Masashi Hirota
  • Patent number: 9305337
    Abstract: System, method, and apparatus for smoothing of edges in images to remove irregularities are disclosed. In one aspect of the present disclosure, a method of image processing includes, identifying an edge in an image having an associated set of edge characteristics, determining the associated set of edge characteristics, and applying a low pass filter to a pixel of the edge based on the associated set of edge characteristics to generate a second image based on the image, wherein the edge in the image is smoothed in the second image. The method further includes generating a third image which is a blend of the original image and the second (edge-smoothed) image based on the associated set of edge characteristics.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: April 5, 2016
    Assignee: Lattice Semiconductor Corporation
    Inventor: Dale R. Adams
  • Patent number: 9305221
    Abstract: An imaging unit is arranged in a motor vehicle. The imaging unit is designed for providing, as a function of an image acquired by it, a digital source image of a predefined image size. A first intermediate image of a predefined first intermediate image size is generated by reducing a resolution of the source image for the sake of reducing pixels. Furthermore, a second intermediate image of the predefined image size is generated such that it comprises the first intermediate image. The second intermediate image is analyzed by a predefined detector in order to examine whether an object of a predefined object category is situated in the second intermediate image, the detector being designed for analyzing a predefined image detail and for detecting an object of a predefined object category of a predefined object size range.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: April 5, 2016
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventor: Sebastian Orecher
  • Patent number: 9294784
    Abstract: Methods and apparatus are provided for region-based filter parameter selection for de-artifact filtering. An apparatus includes an encoder for encoding picture data for at least a region of a picture. The encoder includes a de-artifact filter for performing de-artifact filtering on the region using region-based filter parameter selection. The region includes any of a non-block-boundary, a block boundary, a combination thereof, and the non-block-boundary to an exclusion of any block boundaries.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: March 22, 2016
    Assignee: THOMSON LICENSING
    Inventors: Yunfei Zheng, Qian Xu, Joel Sole, Peng Yin, Xiaoan Lu
  • Patent number: 9264661
    Abstract: A system may include a receiver, a decoder, a post-processor, and a controller. The receiver may receive encoded video data. The decoder may decode the encoded video data. The post-processor may perform post-processing on frames of decoded video sequence from the decoder. The controller may adjust post-processing of a current frame, based upon at least one condition parameters detected at the system.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: February 16, 2016
    Assignee: Apple Inc.
    Inventors: Jiefu Zhai, Chris Y. Chung, Xiaosong Zhou, Hsi-Jung Wu
  • Patent number: 9214012
    Abstract: An image processing apparatus and method including executing high-pass filtering in a column direction on the pixel values of original image data read from a flat panel detector to obtain first image data, and subtracting a value obtained by converting each of the pixel values of the first image data in accordance with an absolute value of a statistic calculated from pixel values in the same pixel row of the first image data from the value of a corresponding pixel of the original image data to obtain processed image data.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: December 15, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Keiji Tsuchiya
  • Patent number: 9215354
    Abstract: According to one embodiment, a noise reduction circuit includes a noise reduction filter for converting a pixel value of a pixel of interest through a calculation that uses the pixel value of the pixel of interest and pixel values of adjacent pixels. The noise reduction filter is set, for the calculation, with a heavier weighting for vertically adjacent pixels than that for horizontally adjacent pixels. The horizontally adjacent pixels are adjacent pixels that are located in parallel with the pixel of interest in a horizontal direction. The vertically adjacent pixels are adjacent pixels that are located in parallel with the pixel of interest in a vertical direction.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: December 15, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventor: Takayuki Ogasahara
  • Patent number: 9202107
    Abstract: An image processing apparatus includes: a data processing section which processes input image data and obtains output image data; a face detecting section which detects a face image on the basis of the input image data and obtains information about a face image region in which the face image exists; and a processing controller which controls the process of the data processing section on the basis of the information about the face image region obtained in the face detecting section.
    Type: Grant
    Filed: January 8, 2014
    Date of Patent: December 1, 2015
    Inventors: Kazuki Yokoyama, Takahiro Sakaguchi, Tomoichi Fujisawa, Masayuki Tsumura, Mitsuharu Hoshino
  • Patent number: 9183621
    Abstract: Provision can be made of a high-speed image processing apparatus that eliminates poor visibility in a dotted configuration or a superimposed portion of two streaks upon removing a false image due to statistical noise. That is, provision can be made of a high-speed image processing apparatus capable of outputting a processed image of high visibility in accordance with a shape of a configuration of a subject appearing in an original image upon removing a false image associated with the statistical noise. A band image noise extract generating unit performs image processing by superimposing a band image, an isotropic blur image, and an anisotropic blur image while changing weighting for each pixel in accordance with edge reliability. Such a construction eliminates poor visibility in the dotted configuration or the superimposed portion of two streaks upon removing the false image in the original image.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: November 10, 2015
    Assignee: SHIMADZU CORPORATION
    Inventor: Wataru Takahashi
  • Patent number: 9165346
    Abstract: Embodiments of the present invention provide a method and an apparatus for reducing image noise. The method includes decomposing an original image into a luminance channel image and at least one chrominance channel image, and calculating a weighted average value of each pixel of the luminance channel image and the chrominance channel image by using luminance information, to correct each pixel of the luminance channel image and the chrominance channel image. By virtue of the embodiments of the present invention, it is possible to effectively avoid color dispersion at edges of images, to achieve easy implementation, and to effect low cost.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: October 20, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Xuan Fu, Jiangli Ye
  • Patent number: 9142012
    Abstract: Systems and methods for reducing chrominance (chroma) noise in image data are provided. In one example of such a method, image data in YCC format may be received into logic of an image signal processor. Using the logic, noise may be filtered from a first chrominance component or a second chrominance component, or both, of the image data, using a sparse filter and a noise threshold. The noise threshold may be determined based at least in part on two of the components of the YCC image data.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: September 22, 2015
    Assignee: APPLE INC.
    Inventors: Suk Hwan Lim, Mark A. Zimmer
  • Patent number: 9135701
    Abstract: A method of image processing, including: (a) calculating at least one pixel color feature (PCF) value for each pixel in a color medical image to generate a set of PCF data; and (b) filtering the PCF data with at least one spatial adaptive bandpass filter (ABPF) to sort the pixels into physiologically significant regions; wherein the at least one PCF value for at least one pixel depends on at least 2 color components of the medical image.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: September 15, 2015
    Assignee: DVP Technologies Ltd.
    Inventors: Avraham Rami Guissin, Eitan Lavi