Predictive Patents (Class 375/240.12)
  • Patent number: 12034923
    Abstract: An image encoding/decoding method and apparatus may reconstruct a current picture based on at least one of intra prediction and inter prediction, specify a block boundary to which a deblocking filter is applied in the reconstructed current picture, and apply a deblocking filter to a block boundary based on a filter type pre-defined in an encoding apparatus.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: July 9, 2024
    Assignee: DIGITALINSIGHTS INC.
    Inventor: Yong Jo Ahn
  • Patent number: 12034978
    Abstract: In a method, a filter shape is determined from a plurality of filter shapes of a sample offset filter to be applied to a reconstructed sample of a current component in a current picture. A coded video bitstream is generated based on samples of the current picture and the determined filter shape of the sample offset filter. The coded video bitstream includes coded information that indicates the filter shape. A top most sample of the first reconstructed samples in the plurality of filter shapes is located within a first predetermined number of top rows above a center reconstructed sample of the first component that is co-located with the reconstructed sample of the current component. A bottom most sample of the first reconstructed samples in the plurality of filter shapes is located within a second predetermined number of bottom rows below the center reconstructed sample of the first component.
    Type: Grant
    Filed: March 16, 2023
    Date of Patent: July 9, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Xin Zhao, Yixin Du, Shan Liu
  • Patent number: 12034926
    Abstract: An encoder (400), a decoder (450), and methods (230, 30) for partitioning a picture from a sequence of video pictures into a layout having a plurality of flexible tiles or segments is disclosed. Each tile or segment (T) comprises a single rectangular or square region. The encoder generates (22) a partition structure and encodes (28) the tiles according to the partition structure. The encoder also generates a bitstream (12) comprising a plurality of coded picture segments and information indicating the partition structure used to partition the picture into the plurality of flexible tiles or segments, and sends (29) the bitstream to the decoder. Upon receipt, the decoder uses the coded picture segments and information in the bitstream to decode (38) the plurality of coded picture segments.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: July 9, 2024
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Rickard Sjöberg, Jack Enhorn, Martin Pettersson, Mitra Damghanian
  • Patent number: 12034930
    Abstract: There is provided an image encoding/decoding method and apparatus. The image decoding method comprises decoding size information of a quantization group from a bitstream, acquiring a delta quantization parameter of a current block on the basis of the size information of the quantization group, and deriving a quantization parameter for the current block on the basis of the delta quantization parameter.
    Type: Grant
    Filed: January 31, 2022
    Date of Patent: July 9, 2024
    Assignees: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
    Inventors: Sung Chang Lim, Jung Won Kang, Ha Hyun Lee, Jin Ho Lee, Hui Yong Kim, Yung Lyul Lee, Myung Jun Kim, Nam Uk Kim, Ji Youn Jung, Yang Woo Kim, Jae Gon Kim
  • Patent number: 12034947
    Abstract: A media data processing method includes: acquiring a description data box of a jth track in the M tracks, the description data box including temporal domain track indication information, the temporal domain track indication information being used for indicating a track encapsulating mode of the N temporal domain layers, the temporal domain track indication information including temporal domain layer information of a temporal domain layer encapsulated into the jth track, j being a positive integer, and j?M; and decoding the media data according to the temporal domain track indication information, thus improving the flexibility of multi-track encapsulation on different temporal domain layers.
    Type: Grant
    Filed: December 1, 2022
    Date of Patent: July 9, 2024
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventor: Ying Hu
  • Patent number: 12034918
    Abstract: A method for intra prediction may include obtaining a target block to be encoded in a target image. The method may also include determining a final most probably mode (MPM) list of the target block based on at least one of (a) first intra-prediction modes configured to encode two or more adjacent blocks of the target block, (b) a width and a height of the target block, (c) statistical information of second intra-prediction modes configured to encode a plurality of first encoded blocks associated with the target block, or (d) texture features of a plurality of second encoded blocks associated with the target block. The method may also include determining, based on the final MPM list, a target intra-prediction mode corresponding to the target block. The method may also include encoding, based on the target intra-prediction mode, the target block.
    Type: Grant
    Filed: September 11, 2021
    Date of Patent: July 9, 2024
    Assignee: ZHEJIANG DAHUA TECHNOLOGY CO., LTD.
    Inventors: Cheng Fang, Dong Jiang, Jucai Lin, Jun Yin, Feiyang Zeng
  • Patent number: 12028538
    Abstract: The present invention relates to an image information decoding method. The decoding method includes receiving a bit stream including a Network Abstraction Layer (NAL) unit that includes information related to encoded image, and parsing a NAL unit header of the NAL unit. The NAL unit header may not include 1 bit flag information that represents whether a picture is a non-reference picture or a reference picture in the entire bit stream during encoding.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: July 2, 2024
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Won Kang, Ha Hyun Lee, Jin Soo Choi, Jin Woong Kim
  • Patent number: 12028503
    Abstract: Disclosed are methods and apparatuses for decoding an image. A method includes receiving a bitstream obtained by encoding the image; dividing a first coding block into a plurality of second coding blocks; generating a prediction block of a second coding block based on syntax information obtained from the bitstream; and reconstructing the second coding block based on the prediction block and a residual block of the second coding block, the residual block being obtained by performing a dequantization and an inverse-transform on quantized transform coefficients from the bitstream. The first coding block has a recursive division structure. The first coding block is divided based on at least one of a quad tree division, a binary tree division or a triple tree division.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: July 2, 2024
    Assignee: B1 INSTITUTE OF IMAGE TECHNOLOGY, INC.
    Inventor: Ki Baek Kim
  • Patent number: 12028537
    Abstract: Innovations in encoding or decoding when switching color spaces are presented. For example, some of the innovations relate to signaling of control information for adaptive color space transformation (“ACT”). Other innovations relate to ACT operations. These innovations can improve coding efficiency when switching between color spaces during encoding and decoding.
    Type: Grant
    Filed: May 1, 2023
    Date of Patent: July 2, 2024
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Bin Li, Jizheng Xu, Gary J. Sullivan
  • Patent number: 12028556
    Abstract: The present invention relates to video encoding and decoding method and apparatus, and a video encoding method according to the present invention comprises the steps of: entropy-encoding quantized transform information; and transmitting the entropy-encoded information as a bitstream, wherein the bitstream includes information indicating pieces of information to be parallel decoded in byte units.
    Type: Grant
    Filed: June 2, 2023
    Date of Patent: July 2, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Hendry Hendry, Byeongmoon Jeon, Yongjoon Jeon, Seungwook Park, Jungsun Kim, Joonyoung Park, Jaehyun Lim, Naeri Park, Chulkeun Kim
  • Patent number: 12028552
    Abstract: Video decoder configured to decode a video comprising a plurality of pictures from a video data stream by decoding each picture from one or more video coding units within an access unit of the video data stream which is associated with the respective picture; read a substitute coding unit type from a parameter set unit of the video data stream; for each predetermined video coding unit, read a coding unit type identifier (100) from the respective video coding unit; check whether the coding unit identifier identifies a coding unit type out of a first subset of one or more coding unit types (102) or out of a second subset of coding unit types (104), if the coding unit identifier identifies a coding unit type out of the first subset of one or more coding unit types, attribute the respective video coding unit to the substitute coding unit type; if the coding unit identifier identifies a coding unit type out of the second subset of coding unit types, attribute the respective video coding unit to the coding unit typ
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: July 2, 2024
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Yago Sánchez De La Fuente, Karsten Sühring, Cornelius Hellge, Thomas Schierl, Robert Skupin, Thomas Wiegand
  • Patent number: 12028546
    Abstract: A method of decoding a video signal according to the present invention may include: determining whether or not change in brightness is present between a current video including a current block and a reference video of the current video; when it is determined that change in brightness is present between the current video and the reference video, determining weight prediction parameter candidates of the current block; determining a weight prediction parameter of the current block on the basis of index information specifying any of the weight prediction parameter candidates; and performing prediction for the current block on the basis of the weight prediction parameter.
    Type: Grant
    Filed: September 1, 2023
    Date of Patent: July 2, 2024
    Assignee: Intellectual Discovery Co., Ltd.
    Inventors: Joo Hee Moon, Sung Won Lim, Dong Jae Won
  • Patent number: 12022066
    Abstract: A method for decoding a video according to the present invention may comprise: deriving a plurality of reference sample lines for a current block, selecting at least two among the plurality of reference sample lines, and performing intra prediction for the current block based on the selected reference sample lines.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: June 25, 2024
    Assignee: KT CORPORATION
    Inventor: Bae Keun Lee
  • Patent number: 12022058
    Abstract: A method of video processing is described. The method includes: deriving, for a conversion between a current block of a video and a coded representation of the video, a prediction block for the current block that is determined according to a tool in which weights are used to determine a weighted sum of two initial prediction blocks used to determine the prediction block; and performing the conversion using the prediction block; wherein the deriving includes: applying the weights to two intermediate prediction samples that respectively belong to the two initial prediction blocks to derive a final prediction sample; and performing a right shift operation for the final prediction sample, wherein the right shift operation is pbSample>> (shift1+3)), wherein pbSample represents the final prediction sample, shift1 is set equal to Max(2, 14?bitDepth); and determining the prediction block based on the final prediction sample.
    Type: Grant
    Filed: March 10, 2022
    Date of Patent: June 25, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Yang Wang, Hongbin Liu, Li Zhang, Kai Zhang, Jizheng Xu, Yue Wang
  • Patent number: 12022114
    Abstract: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a first determination whether a luma video block of a video is coded using a matrix based intra prediction (MIP) mode; performing a second determination that the luma video block is applicable for determining a chroma intra mode for a current chroma video block of the video; performing, based on the first determination and the second determination, a third determination about the chroma intra mode to be used for the current chroma video block; and performing, based on the third determination, a conversion between the current chroma video block and a bitstream representation of the current chroma video block.
    Type: Grant
    Filed: April 4, 2023
    Date of Patent: June 25, 2024
    Assignees: Beijing Bytedance Network Technology Co., Ltd., Bytedance Inc.
    Inventors: Zhipin Deng, Kai Zhang, Li Zhang, Hongbin Liu, Jizheng Xu
  • Patent number: 12022121
    Abstract: Devices, systems and methods for coefficient coding in transform skip mode are described. An exemplary method for visual media processing includes: for encoding a current video block in a video region of a visual media data into a bitstream representation of the visual media data, identifying usage of a coding mode and/or an intra prediction mode and/or a set of allowable intra prediction modes; and upon identifying the usage, making a decision of whether to include or exclude, in the bitstream representation, a syntax element indicative of selectively applying a transform skip mode to the current video block, wherein, in the transform skip mode, a residual of a prediction error between the current video block and a reference video block is represented in the bitstream representation of the visual media data without applying a transformation.
    Type: Grant
    Filed: October 6, 2021
    Date of Patent: June 25, 2024
    Assignee: BYTEDANCE INC.
    Inventors: Weijia Zhu, Li Zhang, Jizheng Xu
  • Patent number: 12022109
    Abstract: An image decoding method performed by a decoding device according to the present disclosure comprises: a step of deriving reference picture list 0 (L0) and reference picture list 1 (L1); a step of deriving two motion vectors (MV) for a current block, the two MVs including MVL0 for the L0 and MVL1 for the L1; a step of determining whether to apply bi-prediction optical flow (BIO) prediction for deriving refined motion vectors by sub-blocks to the current block; a step of deriving a refined motion vector for a sub-block of the current block based on the MVL0 and MVL1, if the BIO prediction is applied to the current block; and a step of deriving a prediction sample based on the refined motion vector.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: June 25, 2024
    Assignee: LG Electronics Inc.
    Inventors: Jaeho Lee, Seunghwan Kim
  • Patent number: 12022106
    Abstract: This disclosure relates encoding and decoding of motion vector difference in for inter-predicting a video block. An example is disclosed for decoding an inter-predicted video block of a video stream. The method includes receiving a coded video bitstream; extracting, from the coded video bitstream, an inter-predication mode and a joint delta motion vector (MV) for a current block in a current frame; extracting, from the coded video bitstream, a flag indicating whether a first delta MV for a first reference frame and a second delta MV for a second reference frame are jointly signaled; in response to the flag indicating that the first delta MV and the second delta MV are jointly signaled, deriving the first delta MV and the second delta MV based on the joint delta MV; and decoding the current block in the current frame based on the first delta MV and the second delta MV.
    Type: Grant
    Filed: March 22, 2022
    Date of Patent: June 25, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Liang Zhao, Xin Zhao, Shan Liu
  • Patent number: 12015761
    Abstract: A method of decoding a coded video bitstream is provided. The method includes obtaining a reference picture list structure for a current slice represented in the coded video bitstream; constructing a reference picture list for the current slice based on the reference picture list structure such that a number of entries in the reference picture list and an order of the entries in the reference picture list are both the same as in the reference picture list structure, wherein the reference picture list contains a plurality of active entries and a plurality of inactive entries; and obtaining, based on at least one active entry of the reference picture list, at least one reconstructed block of the current slice.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: June 18, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Fnu Hendry, Ye-Kui Wang
  • Patent number: 12010303
    Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may include determining a chroma array type of a current image, determining an adaptive loop filter (ALF) indicator of a chroma component based on the chroma array type, and performing ALF filtering with respect to a reconstructed image based on a value of the ALF indicator. The value of the ALF indicator may be determined to be a predetermined value without being obtained from a bitstream, based on the chroma array type being a predetermined type, and the value of the ALF indicator may be obtained from the bitstream, based on the chroma array type being not the predetermined type.
    Type: Grant
    Filed: January 3, 2023
    Date of Patent: June 11, 2024
    Assignee: LG Electronics Inc.
    Inventors: Ling Li, Jung Hak Nam, Jaehyun Lim, Jin Heo, Seung Hwan Kim
  • Patent number: 12010348
    Abstract: An image decoding method according to the present disclosure presents indication information related to whether deblocking parameters for a deblocking filtering procedure exist in a picture header or a slice header.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: June 11, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Hendry Hendry, Seunghwan Kim
  • Patent number: 12010324
    Abstract: A picture decoding method performed by a decoding apparatus according to the present disclosure includes obtaining motion prediction information from bitstream, generating an affine MVP candidate list including affine MVP candidates for a current block, deriving CPMVPs for respective CPs of the current block based on one of the affine MVP candidates included in the affine MVP candidate list, deriving the CPMVDs for the CPs of the current block based on information on CPMVDs for each of the CPs included in the obtained motion prediction information, deriving CPMVs for the CPs of the current block based on the CPMVPs and the CPMVDs, deriving prediction samples for the current block based on the CPMVs, and generating reconstructed samples for the current block based on the derived prediction samples.
    Type: Grant
    Filed: May 22, 2023
    Date of Patent: June 11, 2024
    Assignee: LG Electronics Inc.
    Inventors: Seethal Paluri, Seunghwan Kim
  • Patent number: 12010328
    Abstract: A method and an apparatus of encoding/decoding intra prediction mode using a plurality of candidate intra prediction modes are disclosed. The method includes deriving three candidate intra prediction modes about a current block and deriving an intra prediction mode of the current block.
    Type: Grant
    Filed: May 11, 2022
    Date of Patent: June 11, 2024
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Sun Young Lee
  • Patent number: 12010301
    Abstract: This disclosure relates to video coding and more particularly to techniques for performing a position-dependent intra prediction sample filtering process. In one example, a method of coding video data comprises: deriving an intra prediction angle parameter, deriving an inverse angle parameter based on the intra prediction angle parameter: for a prediction mode included in a defined set of prediction modes, setting a value of a scale variable based on the derived inverse angle: and performing a position-dependent intra prediction sample filtering process using the value of a scale variable.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: June 11, 2024
    Assignee: SHAR KABUSHIKI KAISHA
    Inventor: Frank Bossen
  • Patent number: 12003700
    Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a current picture and a reference picture list structure comprising an inter-layer reference picture flag. The mechanism determines an entry in the reference picture list structure associated with the current picture is an inter-layer reference picture (ILRP) entry based on the inter-layer reference picture flag. The current picture is decoded based on an inter-layer reference picture indicated by the entry in the reference picture list structure when the entry is the ILRP entry. The current picture is forwarded for display as part of a decoded video sequence.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: June 4, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, FNU Hendry
  • Patent number: 12003753
    Abstract: The present invention relates to image processing, and more particularly, to a video coding/decoding method using a clipped motion vector and an apparatus thereof. An embodiment of the present invention relates to a method of decoding an image. The method includes clipping a motion vector of a reference picture in a predetermined dynamic range to generate a clipped motion vector, storing the clipped motion vector in a buffer, deriving a motion vector of a coding treeblock using the motion vector stored in the buffer, and performing inter prediction decoding process using the motion vector of the coding treeblock. According to the exemplary embodiment of the present invention, a size of a memory required for storing motion vectors may be reduced.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: June 4, 2024
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang Lim, Hui Yong Kim, Se Yoon Jeong, Suk Hee Cho, Dong San Jun, Jong Ho Kim, Ha Hyun Lee, Jin Ho Lee, Jin Soo Choi, Jin Woong Kim
  • Patent number: 12003721
    Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may include obtaining a current block by splitting an image, determining a prediction mode of the current block, generating an intra prediction block of the current block, based on the prediction mode of the current block being an intra prediction mode, generating a residual block of the current block, and reconstructing the current block based on the prediction block and the residual block of the current block.
    Type: Grant
    Filed: June 14, 2023
    Date of Patent: June 4, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Ling Li, Jung Hak Nam
  • Patent number: 12003715
    Abstract: In an exemplary aspect, a method for visual media processing includes identifying a boundary at a vertical edge and/or a horizontal edge of two video blocks; calculating a boundary strength of a filter based on at least one of the two video blocks crossing a vertical edge or a horizontal edge is coded using a combined intra-inter prediction (CIIP) mode; deciding whether to turn on or off the filter; selecting a strength of the filter in case the filter is turned on; and performing, based on the selecting, a deblocking filter (DB) process to the video blocks.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: June 4, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Li Zhang, Weijia Zhu, Kai Zhang, Hongbin Liu, Jizheng Xu
  • Patent number: 12003711
    Abstract: In an exemplary aspect, a method for visual media processing includes identifying a boundary at a vertical edge and/or a horizontal edge of two video blocks; calculating a boundary strength of a filter based on at least one of the two video blocks crossing a vertical edge or a horizontal edge is coded using a combined intra-inter prediction (CIIP) mode; deciding whether to turn on or off the filter; selecting a strength of the filter in case the filter is turned on; and performing, based on the selecting, a deblocking filter (DB) process to the video blocks.
    Type: Grant
    Filed: November 10, 2021
    Date of Patent: June 4, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Li Zhang, Weijia Zhu, Kai Zhang, Hongbin Liu, Jizheng Xu
  • Patent number: 12003764
    Abstract: A prediction method for a current block and an electronic device are provided, where the method includes the following. Mode information of an intra block copy-mirror mode is obtained when in a non-merge mode of intra block copy. Determine whether to perform mirror transform on a reference block according to the mode information. A prediction block of the current block is obtained by performing mirror transform on the reference block when a determination result is performing mirror transform on the reference block.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: June 4, 2024
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Fan Liang, Jian Cao
  • Patent number: 12003770
    Abstract: Systems, methods, and instrumentalities are disclosed for discontinuous face boundary filtering for 360-degree video coding. A face discontinuity may be filtered (e.g., to reduce seam artifacts) in whole or in part, for example, using coded samples or padded samples on either side of the face discontinuity. Filtering may be applied, for example, as an in-loop filter or a post-processing step. 2D positional information related to two sides of the face discontinuity may be signaled in a video bitstream so that filtering may be applied independent of projection formats and/or frame packing techniques.
    Type: Grant
    Filed: August 9, 2022
    Date of Patent: June 4, 2024
    Assignee: VID Scale, Inc.
    Inventors: Philippe Hanhart, Yan Ye, Yuwen He
  • Patent number: 12003707
    Abstract: Disclosed herein is an intra prediction method including: deriving neighbor prediction mode information from a left neighbor prediction mode and an upper neighbor prediction mode; deriving an intra prediction mode for a decoding target unit by using the derived neighbor prediction mode information; and performing intra prediction on the decoding target unit based on the intra prediction mode. According to exemplary embodiments of the present invention, image encoding/decoding efficiency can be improved.
    Type: Grant
    Filed: October 13, 2022
    Date of Patent: June 4, 2024
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Ha Hyun Lee, Hui Yong Kim, Sung Chang Lim, Jong Ho Kim, Jin Ho Lee, Se Yoon Jeong, Suk Hee Cho, Jin Soo Choi, Jin Woong Kim, Chie Teuk Ahn
  • Patent number: 11997311
    Abstract: Video processing methods and apparatuses for coding a current block generate a final predictor by combining multiple predictors of the current block. One of the predictors for the current block is a motion compensated predictor, which is generated according to one candidate selected from a first candidate list. The construction of the first candidate list includes deriving an average candidate by averaging motion information of existing candidates in the first candidate list. A second predictor for the current block is another motion compensated predictor or an intra predictor.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: May 28, 2024
    Assignee: HFI INNOVATION INC.
    Inventors: Man-Shu Chiang, Chih-Wei Hsu
  • Patent number: 11997263
    Abstract: An encoding method obtains an intra prediction mode related to a current block from a bitstream; obtains prediction samples of the current block by performing intra prediction on the current block based on the intra prediction mode; scans transform coefficients of the current block, obtains dequantized transform coefficients of the current block by performing a dequantization on the transform coefficients; determines a transform type of the current block; and obtains residual samples of the current block by performing an inverse-transform on the dequantized transform coefficients based on the determined transform type, the inverse-transform being performed in a horizontal direction and a vertical direction. The transform type is determined to be a Discrete Cosine Transform or Discrete Sine Transform, the size of the current block is equal to or greater than 4×4, and the transform type is determined independently to a direction of the intra prediction mode of the current block.
    Type: Grant
    Filed: March 28, 2023
    Date of Patent: May 28, 2024
    Assignees: Electronics and Telecommunications Research Institute, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Hui Yong Kim, Gwang Hoon Park, Kyung Yong Kim, Sung Chang Lim, Jin Ho Lee, Jin Soo Choi, Jin Woong Kim
  • Patent number: 11991357
    Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus includes determining a splitting structure of a current block composed of chroma components, determining a splitting type of the current block based on the splitting structure, obtaining a plurality of lower-layer blocks by splitting the current block based on the splitting type, and decoding the lower-layer blocks based on a prediction mode of the lower-layer blocks.
    Type: Grant
    Filed: October 31, 2022
    Date of Patent: May 21, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Jangwon Choi, Jin Heo, Sunmi Yoo, Jungah Choi, Seung Hwan Kim
  • Patent number: 11989888
    Abstract: An image sensor, electronic device and method thereof that performs on-sensor multiresolution deep neural network (DNN) processing, such as for gesture recognition. The image data is transformed into first resolution type image data and second resolution type image data. Based on detecting the first resolution type image data includes a predetermined object, processing the second resolution type image data using the second resolution type image data as input into the second DNN.
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: May 21, 2024
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Kevin Chan, Ping Wah Wong, Sa Xiao
  • Patent number: 11991349
    Abstract: A method of decoding a coded video bitstream includes obtaining a reference picture list structure for a current slice represented in the coded video bitstream, wherein the reference picture list structure contains a number of entries; obtaining a default number of active entries in a reference picture list for the current slice; constructing a reference picture list for the current slice, the reference picture list containing a number of active and inactive entries; setting the number of active entries in the reference picture list equal to the number of entries in the reference picture list structure when the default number of active entries in the reference picture list is greater than the number of entries in the reference picture list structure; and obtaining, based on at least one active entry of the reference picture list, at least one reconstructed block of the current slice.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: May 21, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: F N U Hendry, Ye-Kui Wang
  • Patent number: 11991370
    Abstract: An intra predictor (181) for performing intra prediction on each of blocks obtained by dividing an original image in the form of a frame, the intra predictor (181) includes; a linear model calculator (1811a) configured to calculate a linear model of the luminance component and the chroma component of the target block using decoded pixel values of the luminance component and decoded pixel values of the chroma component around the target block on which the intra prediction is performed; a chroma component predictor (1811b) configured to predict pixel values of the chroma component of the target block by applying the linear model calculated by the linear model calculator (1811a) to decoded pixel values of a luminance component of the target block; and a chroma component corrector (1812) configured to correct predicted pixel values of the chroma component obtained by the chroma component predictor (1811b) using decoded pixel values that were not used to calculate a linear model by the linear model calculator (181
    Type: Grant
    Filed: March 29, 2023
    Date of Patent: May 21, 2024
    Assignee: NIPPON HOSO KYOKAI
    Inventors: Shunsuke Iwamura, Atsuro Ichigaya, Shimpei Nemoto
  • Patent number: 11991376
    Abstract: Techniques related to immersive video coding are discussed. Such techniques include encoding an immersive video bitstream by applying scalable video coding to some portions of the immersive video and multiple description coding to other portions of the immersive video and decoding and/or rendering the immersive video bitstream using selective scalable video coding and multiple description coding responsive to indicators in the bitstream.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: May 21, 2024
    Assignee: Intel Corporation
    Inventors: Jill Boyce, Basel Salahieh
  • Patent number: 11985305
    Abstract: The disclosure relates to a method of coding implemented by a decoding device, comprising: obtaining a value of a maximum number of merging motion vector prediction, MVP, candidates for a current block, wherein the current block is predicted using intra block copy, IBC mode; setting a value of a MVP index to zero, when the value of the maximum number of MVP candidates for the current block is equal to one; obtaining a motion vector of the current block according to the MVP index and a candidate list; obtaining prediction samples values of the current block according to the motion vector of the current block.
    Type: Grant
    Filed: October 7, 2021
    Date of Patent: May 14, 2024
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Huanbang Chen, Han Gao, Haitao Yang
  • Patent number: 11985332
    Abstract: Innovations in unified intra block copy (“BC”) and inter prediction modes are presented. In some example implementations, bitstream syntax, semantics of syntax elements and many coding/decoding processes for inter prediction mode are reused or slightly modified to enable intra BC prediction for blocks of a frame. For example, to provide intra BC prediction for a current block of a current picture, a motion compensation process applies a motion vector that indicates a displacement within the current picture, with the current picture being used as a reference picture for the motion compensation process. With this unification of syntax, semantics and coding/decoding processes, various coding/decoding tools designed for inter prediction mode, such as advanced motion vector prediction, merge mode and skip mode, can also be applied when intra BC prediction is used, which simplifies implementation of intra BC prediction.
    Type: Grant
    Filed: March 6, 2023
    Date of Patent: May 14, 2024
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Bin Li, Ji-Zheng Xu
  • Patent number: 11985309
    Abstract: A picture decoding method comprises: partitioning a picture is partitioned, and a luma component intra prediction mode and a chroma component intra prediction mode of the current coding block are determined; when the chroma component intra prediction mode indicates using a luma component of the current coding block to determine a prediction value of a chroma component of the current coding block, a prediction block of the chroma component of the current coding block is determined according to the luma component intra prediction mode; and prediction refinement is performed on the prediction block of the chroma component of the current coding block, so as to obtain a refined prediction block of the chroma component of the current coding block.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: May 14, 2024
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Hai Tang
  • Patent number: 11985356
    Abstract: A method of decoding a syntax element for a current coding unit of video data is performed by an electronic apparatus. The electronic apparatus identifies, for the current coding unit, an above coding unit and a coding tree unit including the current coding unit. After determining that the above coding unit is within the coding tree unit, the electronic apparatus decodes, from a video bitstream, a corresponding syntax element for the current coding unit based, at least in part, on a syntax element associated with the above coding unit retrieved from a line buffer associated with the coding tree unit; otherwise, the electronic apparatus decodes, from the video bitstream, the corresponding syntax element for the current coding unit based, at least in part, on a default value assigned to the syntax element associated with the above coding unit.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: May 14, 2024
    Assignee: BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.
    Inventors: Tsung-Chuan Ma, Hong-Jheng Jhu, Xianglin Wang, Yi-Wen Chen, Xiaoyu Xiu, Shuiming Ye, Yun-fei Zheng, Bing Yu
  • Patent number: 11985322
    Abstract: The general intra prediction process is unnecessarily complicated with inclusion of the reference sample filtering. This application provides solutions for this problem. A method for intra prediction is provided. The method includes: during an intra predicted sample generation stage, obtaining a filtering indication, which indicates whether a filtered value or an unfiltered value of reference samples of the current coding block will be used. When the value of the filtering indication is true, a prediction sample is generated by using the filtered value of the reference samples based on the planar mode. When the value of the filtering indication is false, a prediction sample is generated by using the unfiltered value of the reference samples based on the planar mode. As a result, the reference sample filtering stage can be fully removed or can be combined with other stage.
    Type: Grant
    Filed: March 1, 2022
    Date of Patent: May 14, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Biao Wang, Semih Esenlik, Anand Meher Kotra, Han Gao, Elena Alexandrovna Alshina
  • Patent number: 11979604
    Abstract: The amount of memory required for CCLM prediction is reduced. The CCLM prediction parameter derivation unit (310442) derives a scale shift value corresponding to a luma difference value, and derives a CCLM prediction parameter, by shifting, by using the scale shift value, a value obtained by multiplying a value of a table referred to with a value obtained by performing right shift of the luma difference value by the scale shift value as an index and a chroma difference value. In addition, in a case of deriving a prediction image, a bit width is reduced by adaptively deriving a shift amount of a linear prediction parameter from the chroma difference value.
    Type: Grant
    Filed: June 9, 2023
    Date of Patent: May 7, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yukinobu Yasugi, Eiichi Sasaki, Tomohiro Ikai, Tomoko Aono
  • Patent number: 11979609
    Abstract: The present disclosure, in a method of decoding a video signal, provides a method including checking whether a transform skip is applied to a current block; acquiring a transform index indicating transform types applied to a horizontal direction and a vertical direction of the current block from among a plurality of predefined transform types from the video signal when the transform skip is not applied to the current block; and performing an inverse primary transform on the current block using the transform types indicated by the transform index, wherein the transform types applied to the horizontal direction and the vertical direction of the current block are determined from among transform types defined according to an intra prediction mode of the current block based on the transform index.
    Type: Grant
    Filed: April 12, 2023
    Date of Patent: May 7, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Seunghwan Kim, Medhi Salehifar, Moonmo Koo, Jaehyun Lim
  • Patent number: 11979585
    Abstract: A chroma component block vector is initialized using one of a neighboring or collocated luma block vector when current picture referencing mode is used and when dual tree is enabled. In a first embodiment, if a collocated luminance block is not coded in current picture reference mode, a luma vector from a left chroma subblock is used. When the left chroma subblock is not coded in current picture reference mode, a luma vector from the above chroma subblock is used, and if that is not available, a default vector is used. In a second embodiment, a collocated luma block partition is used to derive a chroma block vector.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: May 7, 2024
    Assignee: INTERDIGITAL MADISON PATENT HOLDINGS, SAS
    Inventors: Tangi Poirier, Fabrice Leleannec, Franck Galpin
  • Patent number: 11979607
    Abstract: A method for processing point cloud data may encode point cloud data including geometry information and attribute information and transmit a bitstream including the encoded point cloud data. The method for processing point cloud data may receive a bitstream including the point cloud data including geometry information and attribute information and decode the received point cloud data.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: May 7, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyunmook Oh, Sejin Oh
  • Patent number: 11979610
    Abstract: Devices, systems and methods for coefficient coding in transform skip mode are described. An exemplary method for visual media processing includes: for encoding a current video block in a video region of a visual media data into a bitstream representation of the visual media data, identifying usage of a coding mode and/or an intra prediction mode and/or a set of allowable intra prediction modes; and upon identifying the usage, making a decision of whether to include or exclude, in the bitstream representation, a syntax element indicative of selectively applying a transform skip mode to the current video block, wherein, in the transform skip mode, a residual of a prediction error between the current video block and a reference video block is represented in the bitstream representation of the visual media data without applying a transformation.
    Type: Grant
    Filed: October 6, 2021
    Date of Patent: May 7, 2024
    Assignee: BYTEDANCE INC.
    Inventors: Weijia Zhu, Li Zhang, Jizheng Xu
  • Patent number: 11973946
    Abstract: Provided is a picture encoding device that divides a picture into blocks and performs encoding for each of the divided blocks. A primary signal block divider divides a primary signal of the picture into rectangles having a predetermined size, and generates a primary signal block. A secondary signal block divider divides a secondary signal of the picture into rectangles having a predetermined size, and generates a secondary signal block. A primary signal predictor predicts a primary signal, and a secondary signal predictor predicts a secondary signal. The secondary signal predictor can perform inter prediction of predicting a secondary signal from an encoded primary signal, and the inter prediction is restricted based on at least one of a size of the primary signal block and a size of the secondary signal block.
    Type: Grant
    Filed: October 18, 2022
    Date of Patent: April 30, 2024
    Assignee: Godo Kaisha IP Bridge1
    Inventors: Shigeru Fukushima, Hiroya Nakamura, Toru Kumakura