Adaptive Coding (i.e., Changes Based Upon History, Activity, Busyness, Etc.) Patents (Class 382/239)
  • Patent number: 10257513
    Abstract: In a video processing system, a method and system for generating a transform size syntax element for video decoding are provided. For high profile mode video decoding operations, the transform sizes may be selected based on the prediction macroblock type and the contents of the macroblock. A set of rules may be utilized to select from a 4.×.4 or an 8.×.8 transform size during the encoding operation. Dynamic selection of transform size may be performed on intra-predicted macroblocks, inter-predicted macroblocks, and/or direct mode inter-predicted macroblocks. The encoding operation may generate a transform size syntax element to indicate the transform size that may be used in reconstructing the encoded macroblock. The transform size syntax element may be transmitted to a decoder as part of the encoded video information bit stream.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: April 9, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Stephen Gordon, Douglas Chin
  • Patent number: 10257530
    Abstract: A decoding apparatus for decoding an image by obtaining transformation coefficients of a sub residual block based on location information of at least one non-zero transformation coefficient and level information of the at least one non-zero transformation coefficient obtained from a bitstream.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: April 9, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min-su Cheon, Jung-hye Min, Woo-jin Han
  • Patent number: 10248666
    Abstract: A method of creating a hierarchical dictionary comprises, with a processor, extracting a number of symbols from a first image, constructing a number of refinement dictionary entries based on the symbols, the refinement dictionary entries forming a refinement dictionary, grouping a number of the refinement dictionary entries into clusters to form a number of refinement dictionary entry clusters, and constructing a number of direct dictionary entries for each of the refinement dictionary entry clusters, the direct dictionary entries forming a direct dictionary.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: April 2, 2019
    Assignees: Hewlett-Packard Development Company, L.P., Purdue Research Foundation
    Inventors: Dejan Depalov, Peter Bauer, Yandong Guo, Jay Allebach, Charles A. Bouman
  • Patent number: 10250887
    Abstract: An image decoding method of decoding, on a block-by-block basis, image data included in a coded stream includes: deriving candidates for an intra prediction mode to be used for intra prediction for a decoding target block, the number of the candidates constantly being a plural number; obtaining, from the coded stream, an index for identifying one of the derived candidates for the intra prediction mode; and determining, based on the obtained index, one of the derived candidates for the intra prediction mode as the intra prediction mode to be used for intra prediction for the decoding target block.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: April 2, 2019
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Patent number: 10243998
    Abstract: A method for identifying metadata for cyber content sharing and governance (abbreviated as an MDCCSG method) and application method thereof. The MDCCSG method is proposed based on the requirements of big data sharing and governance under a big data and pan media environment, and is applicable for generating unified identifications on various categories of content resources; and the application method matched with the MDCCSG method can effectively support high-efficient sharing and governance of the big data, wherein the MDCCSG method comprises a unified description framework of metadata, a unified specification method of metadata, and a definition of the core MDCCSG identification element; and the MDCCSG method not only can describe rich semantics of contents in detail, but also has a built-in content trust authentication and security assurance ability.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: March 26, 2019
    Assignee: SOUTHEAST UNIVERSITY
    Inventors: Peng Yang, Youping Li, Hao Yin, Yongqiang Lv, Changjiang Zhang, Bin Zheng
  • Patent number: 10235432
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage medium, to facilitate searching indexed resources associated with sort key values. In one aspect, a method includes actions of maintaining an index including a respective index entry for each of multiple resources, wherein each index entry includes a first sort key that is associated with a corresponding sort key value, receiving a query from a user device, obtaining, based on query features, a first restrict criterion that includes one or more binary value bits, determining, based on (i) the first restrict criterion and (ii) the first sort key, a first count of index entries that are each associated with a respective resource that is responsive to the query, and in response to determining that the first count of index entries satisfies the predetermined threshold, obtaining a set of index entries corresponding to resources related to the query.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: March 19, 2019
    Assignee: Google LLC
    Inventors: Igor Markov, Andras Csomai
  • Patent number: 10230988
    Abstract: Methods, apparatuses and systems directed to frequency domain transforms, including fast integer transforms and directional integer transforms. Further described is a video codec that utilizes a novel class of fast integer and directional transforms.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: March 12, 2019
    Assignee: OTOY, INC.
    Inventor: Malcolm Ian Taylor
  • Patent number: 10187641
    Abstract: A method for decoding a multilayer video signal, according to the present invention, is characterized by: inducing the number of active references of a current picture in consideration of whether the maximum number of active reference pictures of the current picture in a current layer is limited; obtaining a reference layer identifier based on the number of active references; determining an active reference picture of the current picture using a reference layer identifier; generating an interlayer reference picture by upsampling the active reference picture, and performing interlayer prediction of the current picture using an interlayer reference picture.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: January 22, 2019
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim
  • Patent number: 10178392
    Abstract: A method for decoding a multilayer video signal, according to the present invention, is characterized by: inducing the number of active references of a current picture, in consideration of whether the maximum number of active reference pictures of the current picture in a current layer is limited; obtaining a reference layer identifier based on the number of active references, determining an active reference picture of the current picture using a reference layer identifier, generating a reference picture list including the active reference pictures, and performing interlayer prediction of the current picture using the reference picture list.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: January 8, 2019
    Assignee: KT CORPORATION
    Inventors: Bae Keun Lee, Joo Young Kim
  • Patent number: 10178401
    Abstract: A method of decoding including obtaining transformation coefficients of a sub residual block based on location information of a non-zero transformation coefficient and level information of the non-zero transformation coefficient obtained from a bitstream.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: January 8, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min-su Cheon, Jung-hye Min, Woo-jin Han
  • Patent number: 10171833
    Abstract: Innovations in adaptive encoding and decoding for units of a video sequence can improve coding efficiency. For example, some of the innovations relate to encoding/decoding that includes adaptive switching of color spaces between units within a video sequence. Other innovations relate encoding/decoding that includes adaptive switching of color sampling rates between units within a video sequence. Still other innovations relate encoding/decoding that includes adaptive switching of bit depths between units within a video sequence.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: January 1, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Bin Li, Jizheng Xu, Feng Wu
  • Patent number: 10171826
    Abstract: A decoding apparatus for decoding an image by obtaining transformation coefficients of a sub residual block based on location information of a non-zero transformation coefficient and level information of the non-zero transformation coefficient obtained from the bitstream.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: January 1, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min-su Cheon, Jung-hye Min, Woo-jin Han
  • Patent number: 10165286
    Abstract: A system and method for transmission of a video stream are provided. The system may include: an encoder adapted to generate a video stream comprising a plurality of encoded frames, encoded according to at least one encoding parameter; a comparator in communication with the encoder, the comparator adapted to compare encoded frames of the plurality of encoded frames with input frames to determine a fitness metric reflective of visual quality of the encoded frames; and a controller in communication with the comparator, the controller adapted to adjust the at least one encoding parameter based on the fitness metric.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: December 25, 2018
    Assignee: DEJERO LABS INC.
    Inventors: David Pui Keung Sze, Akos Horvath, Bogdan Frusina, Barry Gilhuly, Cameron Kenneth Smith, Joseph Robert Wayne Mallet, Anthony Todd Schneider, Robert Flatt, Hagen Kaye
  • Patent number: 10154273
    Abstract: A decoding apparatus for decoding an image by obtaining transformation coefficients of a sub residual block based on location information of a non-zero transformation coefficient and level information of the non-zero transformation coefficient obtained from a bitstream.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: December 11, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min-su Cheon, Jung-hye Min, Woo-jin Han
  • Patent number: 10154267
    Abstract: A video encoding device includes: transform means 11 for transforming an image block; entropy encoding means 12 for entropy-encoding transformed data of the image block transformed by the transform means 11; PCM encoding means 13 for PCM-encoding the image block; multiplex data selection means 14 for selecting output data of the entropy encoding means 12 or the PCM encoding means 13, in a block of a block size set from the outside; and multiplexing means 15 for embedding a PCM header in a bitstream, in the block of the set from the outside block size.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: December 11, 2018
    Assignee: NEC CORPORATION
    Inventors: Keiichi Chono, Yuzo Senda, Junji Tajime, Hirofumi Aoki, Kenta Senzaki
  • Patent number: 10148961
    Abstract: An example method of entropy coding video data includes determining a window size of a plurality of window sizes for a context of a plurality of contexts used in a context-adaptive coding process to entropy code a value for a syntax element of the video data; entropy coding, based on a probability state of the context, a bin of the value for the syntax element; updating a probability state of the context based on the window size and the coded bin. The example method also includes entropy coding a next bin with the same context based on the updated probability state of the context.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: December 4, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Li Zhang, Jianle Chen, Xin Zhao, Xiang Li, Hongbin Liu, Ying Chen, Marta Karczewicz
  • Patent number: 10136149
    Abstract: A decoding apparatus includes a splitter which splits the image into a plurality of maximum coding units, hierarchically splits a maximum coding unit among the plurality of maximum coding units into a plurality of coding units, and determines one or more transformation residual blocks from a coding unit among the plurality of coding units, wherein the one or more transformation residual blocks include sub residual blocks, a parser which obtains an effective coefficient flag of a sub residual block among the sub residual blocks from a bitstream, the effective coefficient flag of the sub residual block indicating whether at least one non-zero effective transformation coefficient exists in the sub residual block, and when the effective coefficient flag indicates that at least one non-zero transformation coefficient exists in the sub residual block, obtains transformation coefficients of the sub residual block based on location information of the non-zero transformation coefficient and level information of the no
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: November 20, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Min-su Cheon, Jung-hye Min, Woo-jin Han
  • Patent number: 10129548
    Abstract: To reduce the amount of processing related to coding and decoding of transform coefficients, a sub-block coefficient presence/absence flag indicating whether or not at least one non-zero transform coefficient is included is decoded for each of two or more sub-blocks obtained by dividing a unit region, and a context index of a target sub-block is derived on the basis of transform coefficient presence/absence flags each indicating whether or not a transform coefficient is 0. In accordance with the sub-block coefficient presence/absence flags of adjacent sub-blocks that are adjacent to the target sub-block, the context index of the target sub-block is derived.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: November 13, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takeshi Tsukuba, Tomohiro Ikai, Tomoyuki Yamamoto, Yukinobu Yasugi
  • Patent number: 10104375
    Abstract: Method For Implementing A Quantizer In A Multimedia Compression And Encoding System is disclosed. In the Quantizer system of the present invention, several new quantization ideas are disclosed. In one embodiment, adjacent macroblocks are grouped together into macroblock groups. The macroblock groups are then assigned a common quantizer value. The common quantizer value may be selected based upon how the macroblocks are encoded, the type of macroblocks within the macroblock group (intra-blocks or inter-blocks), the history of the motion vectors associated with the macroblocks in the macroblock group, the residuals of the macroblocks in the macroblock group, and the energy of the macroblocks in the macroblock group. The quantizer value may be adjusted in a manner that is dependent on the current quantizer value. Specifically, if the quantizer value is at the low end of the quantizer scale, then only small adjustments are made.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: October 16, 2018
    Assignee: APPLE INC.
    Inventors: Thomas Pun, Roger Kumar, Xiaochun Nie, Hsi-Jung Wu
  • Patent number: 10089782
    Abstract: When rendering a region of a three-dimensional object represented by a base set of polygon vertices in a graphics processing pipeline, a first processing stage uses meta-information representative of the surface relief of the region of the three-dimensional object to determine whether to generate a set of additional polygon vertices over the region of the three-dimensional object, and generates the additional set of polygon vertices (when this is deemed necessary). A second processing stage then uses information representative of the surface relief of the region of the three-dimensional object to modify the positions of one or more of the polygon vertices, before the vertices are assembled into primitives that are then rasterised and rendered.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: October 2, 2018
    Assignee: Arm Limited
    Inventors: Edward Plowman, Sean Ellis
  • Patent number: 10091528
    Abstract: A video processing device receives video data and transmits the video to a display device at a new bit rate that is dynamically adjusted based on variable conditions. The new bit rate is adjusted, at least, by scaling the video and/or a residual image and may be adjusted utilizing compression functions, compression parameters, scale factor, frame rate, color space, and chroma sub-sampling. The display receives video at the adjusted new bit rate and decompresses the video in accordance with corresponding adjustments in the video processing device. Bit rate determination is based on variable operating conditions, display information, image quality, BER, packet error, SNR, desired level of compression, energy consumption, link congestion and display capabilities. Video may be scaled prior to compression. The video may comprise a frame and/or a slice. DPCM, H.264, AVC, transform compression and scaling may be utilized. The display may utilize intra-frame spatial prediction.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: October 2, 2018
    Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
    Inventors: Alexander G. MacInnis, Lei Zhang
  • Patent number: 10091513
    Abstract: A method for encoding a multi-view frame in a video encoder is provided that includes computing a depth quality sensitivity measure for a multi-view coding block in the multi-view frame, computing a depth-based perceptual quantization scale for a 2D coding block of the multi-view coding block, wherein the depth-based perceptual quantization scale is based on the depth quality sensitive measure and a base quantization scale for the 2D frame including the 2D coding block, and encoding the 2D coding block using the depth-based perceptual quantization scale.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: October 2, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Do-Kyoung Kwon, Madhukar Budagavi, Ming-Jun Chen
  • Patent number: 10085037
    Abstract: Provided are a method and apparatus for intra predicting an image, which generate a prediction value via linear interpolation in horizontal and vertical directions of a current prediction unit. The method includes: generating first and second virtual pixels by using at least one adjacent pixel located upper right and lower left to a current prediction unit; obtaining a first prediction value of a current pixel via linear interpolation using an adjacent left pixel located on the same line as the first virtual pixel and the current pixel; obtaining a second prediction value of the current pixel via linear interpolation using an adjacent upper pixel located on the same column as the second virtual pixel and the current pixel; and obtaining a prediction value of the current pixel by using the first and second prediction values.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: September 25, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tammy Lee, Jianle Chen
  • Patent number: 10085025
    Abstract: Disclosed are image quantization parameter decoding method and systems for decoding a quantization parameter for a video decoding process that is based on context-based adaptive binary arithmetic coding. In one embodiment, an image quantization parameter decoding method includes binary-arithmetic-decoding a first bin indicating whether or not a delta quantization parameter is significant, other bins, which are subsequent to the first bin, indicating an absolute value of the delta quantization parameter, and a sign bin, which is subsequent to the other bins, indicating whether the delta quantization parameter is positive or negative. The method further includes generating a delta quantization parameter by de-binarizing the first bin, the other bins and the sign bin. The method further includes generating a re-constructed quantization parameter by adding a predicted quantization parameter to the delta quantization parameter.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: September 25, 2018
    Assignee: NEC Corporation
    Inventors: Keiichi Chono, Hirofumi Aoki
  • Patent number: 10079750
    Abstract: A method for regulating output from stream operators performing a windowing operation may include receiving stream of tuples to be processed by a plurality of processing elements, each processing element having one or more stream operators. The method may also include receiving a first stream of tuples at a first stream operator, the first stream operator being configured to generate a stream of accumulated tuples according to a set of windowing conditions. The method may then include processing the stream of accumulated tuples in response to a window trigger, where the processing generates a quantity of output. At least one processor may then monitor the quantity of output to determine whether the quantity of output exceeds a data output threshold. The processing may then be adjusted, in response to determining that the quantity of output exceeds the data output threshold, to reduce the output to approach the data output threshold.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: September 18, 2018
    Assignee: International Business Machines Corporation
    Inventors: Michael J. Branson, Jay S. Bryant, James E. Carey, John M. Santosuosso
  • Patent number: 10075706
    Abstract: An image coding method for coding image data on a block-by-block basis includes: segmenting a block including coefficients of frequency components, into groups corresponding to frequency ranges based on types of the coefficients, and determining a context corresponding to each of the groups; performing, for each of the coefficients, binary arithmetic coding on the coefficient according to a probability information item corresponding to the context, the context being corresponding to the group having the coefficient; and updating, for each of probability information items, the probability information item corresponding to the context, based on the coefficient included in the group corresponding to the context, wherein in the segmenting, the block is segmented into the groups with various numbers of coefficients.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: September 11, 2018
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio
  • Patent number: 10075730
    Abstract: Provided are a method and apparatus for intra predicting an image, which generate a prediction value via linear interpolation in horizontal and vertical directions of a current prediction unit. The method includes: generating first and second virtual pixels by using at least one adjacent pixel located upper right and lower left to a current prediction unit; obtaining a first prediction value of a current pixel via linear interpolation using an adjacent left pixel located on the same line as the first virtual pixel and the current pixel; obtaining a second prediction value of the current pixel via linear interpolation using an adjacent upper pixel located on the same column as the second virtual pixel and the current pixel; and obtaining a prediction value of the current pixel by using the first and second prediction values.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: September 11, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tammy Lee, Jianle Chen
  • Patent number: 10075732
    Abstract: The present invention relates to an image processing apparatus and method that can improve encoding efficiency while preventing an increase in load. An extraction circuit 71 of a filtering prediction circuit 64 extracts motion compensation images for generating a prediction image in a high-resolution enhancement layer from reference frames in a low-resolution base layer. A filtering circuit 72 of the filtering prediction circuit 64 performs filtering, which involves upconversion and which uses analysis in the time direction, on a plurality of motion compensation images in the base layer extracted by the extraction circuit 71 to generate a prediction image in the enhancement layer. The present invention can be applied to, for example, an encoding apparatus and a decoding apparatus.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: September 11, 2018
    Assignee: SONY CORPORATION
    Inventors: Ohji Nakagami, Yoichi Yagasaki
  • Patent number: 10045042
    Abstract: Provided are a method and apparatus for intra predicting an image, which generate a prediction value via linear interpolation in horizontal and vertical directions of a current prediction unit. The method includes: generating first and second virtual pixels by using at least one adjacent pixel located upper right and lower left to a current prediction unit; obtaining a first prediction value of a current pixel via linear interpolation using an adjacent left pixel located on the same line as the first virtual pixel and the current pixel; obtaining a second prediction value of the current pixel via linear interpolation using an adjacent upper pixel located on the same column as the second virtual pixel and the current pixel; and obtaining a prediction value of the current pixel by using the first and second prediction values.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: August 7, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tammy Lee, Jianle Chen
  • Patent number: 10045043
    Abstract: Provided are a method and apparatus for intra predicting an image, which generate a prediction value via linear interpolation in horizontal and vertical directions of a current prediction unit. The method includes: generating first and second virtual pixels by using at least one adjacent pixel located upper right and lower left to a current prediction unit; obtaining a first prediction value of a current pixel via linear interpolation using an adjacent left pixel located on the same line as the first virtual pixel and the current pixel; obtaining a second prediction value of the current pixel via linear interpolation using an adjacent upper pixel located on the same column as the second virtual pixel and the current pixel; and obtaining a prediction value of the current pixel by using the first and second prediction values.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: August 7, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tammy Lee, Jianle Chen
  • Patent number: 10021412
    Abstract: Methods and apparatus are provided for adaptive motion vector candidate ordering for video encoding and decoding. An apparatus includes a video encoder (100) for encoding a block in a picture by selecting an order of motion vector predictor candidates for the block responsive to a characteristic available at both the video encoder and a corresponding decoder. The characteristic excludes a mode in which the block is partitioned.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: July 10, 2018
    Assignee: THOMSON LICENSING
    Inventors: Liwei Guo, Peng Yin, Yunfei Zheng, Joel Sole, Qian Xu, Xiaoan Lu
  • Patent number: 10013772
    Abstract: There is provided a computerized method and system of controlling a quality measure in a compression quality evaluation system, the method comprising: calculating a grain value indicative of an extent of grain present in an input image, the grain value being calculated based on one or more features characterizing a base image related to the input image; and configuring the quality measure upon a criterion being met by the value, the quality measure being indicative of perceptual quality of a compressed image compressed from the input image. The calculated grain value may be dependent also on further characteristics of the input image, or in the case of a sequence of images, dependent also on the relation between the image and the preceding image.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: July 3, 2018
    Assignee: BEAMR IMAGING LTD
    Inventors: Sharon Carmel, Dror Gill, Tamar Shoham, Udi Yehuda Shrot, Boris Filippov
  • Patent number: 10009607
    Abstract: In a case where a partition mode in which luma signals are partitioned horizontally and vertically is set when an intra prediction of a picture signal is made in units of minimal coding blocks set in advance, an intra prediction unit is configured to make an intra prediction of a chroma signal in units of prediction blocks of the intra prediction of chroma signals within the minimal coding block set in accordance with a chroma format. A second bitstream constructing unit constructs a bitstream of information relating to a luma intra prediction mode of a prediction block of luma signals and information relating to a chroma intra prediction mode of a prediction block of chroma signals.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: June 26, 2018
    Assignee: JVS KENWOOD Corporation
    Inventors: Hiroya Nakamura, Shigeru Fukushima
  • Patent number: 10009613
    Abstract: The present invention proposes to provide methods, apparatus and systems for inverse tone mapping of a high dynamic range image. The method may include the operations of obtaining a luminance component of the high dynamic range image. The method may further include determining an HDR to HDR inverse tone mapper operator. The method may further include determining a tone expanded image by applying the HDR to HDR inverse tone mapper to the luminance component of the high dynamic range image. The method may further include wherein the HDR to HDR inverse tone mapper curve comprises a linear part for dark and mid-tone levels, and an expanding non-linear part for highlights. The system or apparatus may be configured to perform the operations of the method.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: June 26, 2018
    Assignee: THOMSON Licensing
    Inventors: Mozhdeh Seifi, Erik Reinhard
  • Patent number: 9973758
    Abstract: Techniques related to content adaptive entropy coding are described. A technique for video coding may include obtaining first and second video data for entropy encoding such that the first and second video data comprise different data types, determining a first entropy encoding technique for the first video data such that the first entropy encoding technique comprises at least one of an adaptive symbol-run video length coding technique or an adaptive proxy variable length coding technique, entropy encoding the first video data using the first encoding technique to generate first compressed video data and the second video data using a second encoding technique to generate second compressed video data, and assembling the first compressed video data and the second compressed video data to generate an output bitstream.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: May 15, 2018
    Assignee: Intel Corporation
    Inventor: Atul Puri
  • Patent number: 9967556
    Abstract: One video coding method includes at least the following steps: utilizing a visual quality evaluation module for evaluating visual quality based on data involved in a coding loop; and referring to at least the evaluated visual quality for performing sample adaptive offset (SAO) filtering. Another video coding method includes at least the following steps: utilizing a visual quality evaluation module for evaluating visual quality based on data involved in a coding loop; and referring to at least the evaluated visual quality for deciding a target coding parameter associated with sample adaptive offset (SAO) filtering.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: May 8, 2018
    Assignee: MEDIATEK INC.
    Inventors: Cheng-Tsai Ho, Chi-Cheng Ju, Ding-Yun Chen
  • Patent number: 9967573
    Abstract: A codec according to an exemplary embodiment includes a codec processor which receives a current frame, determines a type of a received current frame, and sets rate control parameters of the current frame, and a bit-rate estimator which allocates total target bits to a first group of picture (GOP) including the current frame, and allocates a target bit to each of frames included in the first GOP based on a determined type of the current frame and set rate control parameters.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: May 8, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung Ho Jun, Hyuk Jae Jang
  • Patent number: 9955164
    Abstract: The present disclosure relates to an image processing device and method that enable suppression of an increase in the amount of coding of a scaling list.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: April 24, 2018
    Assignee: SONY CORPORATION
    Inventors: Junichi Tanaka, Yoshitaka Morigami
  • Patent number: 9942563
    Abstract: An intra prediction unit that performs intra-frame prediction includes a luminance reference pixel acquisition unit and a chrominance reference pixel acquisition unit. When the coding unit is set to a smallest CU block, the luminance reference pixel acquisition unit subsamples reference pixels arranged at integer pixel locates neighboring a luminance block that corresponds to a chrominance prediction target block, and acquires the pixel values of the reference pixels after the subsampling. Furthermore, when the coding unit is set to a smallest CU block, the chrominance reference pixel acquisition unit subsamples reference pixels arranged at integer pixel locates neighboring the chrominance prediction target block, and acquires the pixel values of the reference pixels after the subsampling. Such an arrangement is capable of reducing the number of reference pixels used to reduce the redundancy between the color components.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: April 10, 2018
    Assignee: KDDI CORPORATION
    Inventors: Kei Kawamura, Sei Naito
  • Patent number: 9918101
    Abstract: A decoding method includes: entropy-decoding received information; performing inter prediction on a current block based on the entropy-decoded information; and restoring images by using the prediction results, wherein, in the inter prediction step, a skip mode or merge mode is applied to the current block and movement information of the current block may be determined based on the movement information of a neighboring block of the current block.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: March 13, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Seungwook Park, Jaehyun Lim, Yongjoon Jeon, Hendry Hendry, Younghee Choi, Jaewon Sung, Jungsun Kim, Byeongmoon Jeon, Joonyoung Park
  • Patent number: 9912491
    Abstract: A system and method for displaying document content using Universal Plug and Play (UPnP) is provided. A media server provides meta information corresponding to the document content to a control point if a user request for displaying the document content is received, the control point provides the meta information of the document content to a media renderer that can display the requested document content together with an operation performance command for displaying the requested document content, and the media renderer receives the document content from the media server and renders the document content in accordance with the operation performance command to display the document content on a screen.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: March 6, 2018
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Ji-Hyeok Kim, Won-Sang Kwon, Tae-Hwan Hwang, Ki-Chul Park, Yoon-Suk Choi
  • Patent number: 9900527
    Abstract: An imaging system includes an image sensor configured to capture a sequence of images including at least one low dynamic range (LDR) image and at least one high dynamic range (HDR) image. The imaging system also includes readout circuitry. The readout circuitry is coupled to read out image data captured by the image sensor. A processor is coupled to the readout circuitry to receive image data corresponding to the at least one LDR image and image data corresponding to the at least one HDR image. The processor is configured to combine high frequency image data extracted from image data corresponding to the at least one LDR image with low frequency image data extracted from image data corresponding to the at least one HDR image to form a composite image.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: February 20, 2018
    Assignee: OmniVision Technologies, Inc.
    Inventors: Timofey Uvarov, Sarvesh Swami, Donghui Wu
  • Patent number: 9900604
    Abstract: A semiconductor integrated circuit according to an embodiment includes a compressor, a compression distortion detector, and an image-quality adjusting-parameter generator. The compressor generates a compressed image of an original image output from a host apparatus based on an image-quality adjusting parameter. The compression distortion detector detects a compression distortion of the compressed image. The image-quality adjusting-parameter generator updates the image-quality adjusting parameter based on the compression distortion.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: February 20, 2018
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Keiri Nakanishi
  • Patent number: 9888251
    Abstract: A video processing apparatus includes a control unit, a storage device, a video decoder and a video processor. The control unit is arranged for generating a color depth control signal. The video decoder is coupled to the storage device and the control unit, and arranged for referring to the color depth control signal to enable a target video decoding mode selected from a plurality of supported video decoding modes respectively corresponding to different output color depths, and decoding an encoded video bitstream under the target video decoding mode to generate decoded video pictures (sequence) to the storage device. The video processor is coupled to at least the storage device, and arranged for processing picture data derived from the data buffered in the storage device to generate output video pictures (sequence) to a display apparatus.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: February 6, 2018
    Assignee: MEDIATEK INC.
    Inventor: Yung-Chang Chang
  • Patent number: 9883200
    Abstract: The present disclosure relates to a method of acquiring neighboring disparity vectors for multi-texture and multi-depth video. The method belongs to the area of 3D-HEVC video coding technology. The method includes changing the standard associated with a disparity vector that is first searched as a final disparity vector. By deleting location which is minimum searched in candidate space and time location of the coding unit next to current coding unit to divide candidate space and time location of the coding unit into groups, the method takes searched disparity vector that is combined based on the proportion of adoption rate as final disparity vector. The method improves coding quality and at the same time maintaining origin fast algorithm efficiency. The embodiments of the present disclosure improve coding quality at least 0.05% and at the same time maintain origin fast algorithm efficiency while the decoding time is decreased to 97.1%.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: January 30, 2018
    Assignee: Beijing University of Technology
    Inventors: Kebin Jia, Zuocheng Zhou, Pengyu Liu, Yibai Wang
  • Patent number: 9877048
    Abstract: Entropy coding techniques for display stream compression (DSC) are disclosed. In one aspect, a method of entropy coding video data includes partitioning a block of the video data into a plurality of groups of samples based at least in part on a coding mode of the block. The method further includes entropy coding the block via performing a group-wise skip on at least one of the groups in response to all of the samples in the at least one group being equal to a predetermined value.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: January 23, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Vijayaraghavan Thirumalai, Natan Haim Jacobson, Rajan Laxman Joshi
  • Patent number: 9866843
    Abstract: A method for decoding an image according to the present invention comprises the steps of: receiving and decoding MPM index information for indicating an MPM candidate which is to be used as an intra prediction mode of a current block; generating an MPM candidate list containing a plurality of MPM candidates for the current block; determining the MPM candidate indicated by the decoded MPM index information as the intra prediction mode of the current block, among the plurality of the MPM candidates which constitute the MPM candidate list; and generating a prediction block corresponding to the current block by performing intra prediction for the current block based on the determined intra prediction mode.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: January 9, 2018
    Assignee: LG Electronics Inc.
    Inventors: Joonyoung Park, Byeongmoon Jeon, Yongjoon Jeon, Seungwook Park, Jungsun Kim, Jaehyun Lim, Hendry Hendry, Naeri Park, Chulkeun Kim
  • Patent number: 9860539
    Abstract: An image decoding method of decoding, on a block-by-block basis, image data included in a coded stream includes: deriving candidates for an intra prediction mode to be used for intra prediction for a decoding target block, the number of the candidates constantly being a plural number; obtaining, from the coded stream, an index for identifying one of the derived candidates for the intra prediction mode; and determining, based on the obtained index, one of the derived candidates for the intra prediction mode as the intra prediction mode to be used for intra prediction for the decoding target block.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: January 2, 2018
    Assignee: SUN PATENT TRUST
    Inventors: Hisao Sasai, Takahiro Nishi, Youji Shibahara, Toshiyasu Sugio, Kyoko Tanikawa, Toru Matsunobu
  • Patent number: 9860565
    Abstract: An apparatus including a first circuit and a second circuit. The first circuit may be configured to transform an image block into a plurality of transform coefficients. The second circuit may be configured in each of a plurality of modes to (i) quantize the transform coefficients to calculate a plurality of quantized coefficients, (ii) translate a number of non-zero values of the quantized coefficients to a rate value, where the translation is a non-linear translation, (iii) calculate a distortion value (a) based on the transform coefficients and (b) independent of a plurality of inverse quantized coefficients corresponding to the quantized coefficients, and (iv) calculate a score of a current mode of the plurality of modes to encode the image block based on the rate value and the distortion value.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: January 2, 2018
    Assignee: Ambarella, Inc.
    Inventors: Elliot N. Linzer, Hsiang-Chun Huang
  • Patent number: 9858490
    Abstract: A vein authentication device converts pixel values of an image, which captures an authentication site including veins, into frequency components. Moreover, the vein authentication device performs filtering of the frequency components, which are obtained by conversion of the pixel values, using a filter stored in a filter storing unit for reducing frequency components, from among low-frequency components having a lower spatial frequency than the spatial frequency of the veins and high-frequency components having a higher spatial frequency than the spatial frequency of the veins, corresponding to surface reflection of an illumination used for the authentication site. Furthermore, the vein authentication device converts the frequency components, which are subjected to filtering, back into an image. Moreover, the vein authentication device extracts vein data representing a vascular pattern of veins from the image obtained by reverse conversion.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: January 2, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Yuka Jo, Soichi Hama, Mitsuaki Fukuda