公开(公告)号：US11924433B2

公开(公告)日：2024-03-05

申请号：US17814687

申请日：2022-07-25

申请人： CANON KABUSHIKI KAISHA

发明人： Guillaume Laroche ,  Jonathan Taquet ,  Patrice Onno ,  Christophe Gisquet

IPC分类号： H04N19/132 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/189

CPC分类号： H04N19/132 ,  H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/189

摘要： The disclosure regards cross-component prediction and methods for deriving of a linear model for obtaining a first-component sample for a first-component block from an associated reconstructed second-component sample of a second-component block in the same frame, the method comprising determining the parameters of a linear equation representing a straight line passing through two points, each point being defined by two variables, the first variable corresponding to a second-component sample value, the second variable corresponding to a first-component sample value, based on reconstructed samples of both the first-component and the second-component; and deriving the linear model defined by the straight line parameters.

公开(公告)号：US11924413B2

公开(公告)日：2024-03-05

申请号：US18117855

申请日：2023-03-06

申请人： MediaTek Inc.

发明人： Man-Shu Chiang ,  Chih-Wei Hsu

IPC分类号： H04N7/12 ,  H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/189 ,  H04N19/507

CPC分类号： H04N19/11 ,  H04N19/105 ,  H04N19/117 ,  H04N19/136 ,  H04N19/159 ,  H04N19/176 ,  H04N19/189 ,  H04N19/507

摘要： A video decoder that decodes a current block of pixels by using multi-hypothesis combined prediction mode is provided. The video decoder generates a first prediction of the current block based on an inter prediction mode. The video decoder enables the combined prediction mode for the current block based on a block size of the current block determined according to a width and a height of the current block. The combined prediction mode is disabled when the width of or the height of the current block is greater than a threshold length. When the combined prediction mode is enabled, the video decoder generates a second prediction based on an intra prediction mode that is inferred to be a planar mode, and subsequently a combined prediction for the current block based on the first prediction and the second prediction. The video decoder reconstructs the current block by using the combined prediction.

公开(公告)号：US20240073422A1

公开(公告)日：2024-02-29

申请号：US18387917

申请日：2023-11-08

申请人： Sun Patent Trust

发明人： Toru MATSUNOBU ,  Takahiro NISHI ,  Youji SHIBAHARA ,  Hisao SASAI ,  Kyoko TANIKAWA ,  Toshiyasu SUGIO ,  Kengo TERADA

IPC分类号： H04N19/13 ,  A61F13/00 ,  A61M1/00 ,  G06T9/00 ,  H04N19/117 ,  H04N19/136 ,  H04N19/157 ,  H04N19/169 ,  H04N19/189 ,  H04N19/196 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86

CPC分类号： H04N19/13 ,  A61F13/00068 ,  A61M1/732 ,  A61M1/962 ,  G06T9/00 ,  H04N19/117 ,  H04N19/136 ,  H04N19/157 ,  H04N19/1887 ,  H04N19/189 ,  H04N19/196 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86 ,  A61F2013/00174 ,  A61F2013/0057 ,  A61F2013/0091 ,  A61F2013/00944 ,  A61F2013/00957 ,  A61M2205/15 ,  A61M2205/3592 ,  A61M2205/8206

摘要： An image coding method includes: performing context arithmetic coding to consecutively code (i) first information indicating whether or not to perform sample adaptive offset (SAO) processing for a first region of an image and (ii) second information indicating whether or not to use, in the SAO processing for the first region, information on SAO processing for a region other than the first region, the context arithmetic coding being arithmetic coding using a variable probability, the SAO processing being offset processing on a pixel value; and performing bypass arithmetic coding to code other information which is information on the SAO processing for the first region and different from the first information or the second information, after the first information and the second information are coded, the bypass arithmetic coding being arithmetic coding using a fixed probability.

公开(公告)号：US11895327B2

公开(公告)日：2024-02-06

申请号：US17568311

申请日：2022-01-04

申请人： InterDigital VC Holdings, Inc.

发明人： Oscar Divorra Escoda ,  Peng Yin

IPC分类号： H04N7/12 ,  H04N19/57 ,  H04N19/119 ,  H04N19/50 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70 ,  H04N19/13 ,  H04N19/61 ,  H04N19/117 ,  H04N19/126 ,  H04N19/146 ,  H04N19/156 ,  H04N19/44 ,  H04N19/543 ,  H04N19/189 ,  H04N19/507

CPC分类号： H04N19/57 ,  H04N19/117 ,  H04N19/119 ,  H04N19/126 ,  H04N19/13 ,  H04N19/146 ,  H04N19/156 ,  H04N19/159 ,  H04N19/176 ,  H04N19/189 ,  H04N19/44 ,  H04N19/50 ,  H04N19/507 ,  H04N19/543 ,  H04N19/61 ,  H04N19/70

摘要： There are provided methods and apparatus for adaptive geometric partitioning for video encoding and decoding. An apparatus includes an encoder for encoding image data corresponding to pictures by adaptively partitioning at least portions of the pictures responsive to at least one parametric model. The at least one parametric model involves at least one of implicit and explicit formulation of at least one curve.

公开(公告)号：US11895307B2

公开(公告)日：2024-02-06

申请号：US17062446

申请日：2020-10-02

申请人： Apple Inc.

发明人： Khaled Mammou ,  David Flynn ,  Alexandros Tourapis ,  Jungsun Kim

IPC分类号： H04N7/12 ,  H04N19/20 ,  H04N19/119 ,  H04N19/124 ,  H04N19/61 ,  H04N19/176 ,  H04N19/50 ,  H04N19/136 ,  G06T9/00 ,  H04N19/12 ,  H04N19/189 ,  H04N19/64 ,  G06T9/40

CPC分类号： H04N19/20 ,  G06T9/001 ,  G06T9/40 ,  H04N19/119 ,  H04N19/12 ,  H04N19/124 ,  H04N19/136 ,  H04N19/176 ,  H04N19/189 ,  H04N19/50 ,  H04N19/61 ,  H04N19/647

摘要： An encoder is configured to compress point cloud information using a blocks of nodes determined from a prediction tree. A prediction tree is generated for a point cloud. Segments of the prediction tree are identified. The segments are divided into blocks that are predicted by predecessor blocks within the segments. The blocks of the prediction tree may then be encoded and may be provided for transmission to a decoder that can regenerate the point cloud from the blocks of the prediction tree.

公开(公告)号：US11882281B2

公开(公告)日：2024-01-23

申请号：US17848544

申请日：2022-06-24

申请人： INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY

发明人： Ki Baek Kim ,  Je Chang Jeong

IPC分类号： H04N7/12 ,  H04N19/119 ,  H04N19/176 ,  H04N19/189 ,  H04N19/64

CPC分类号： H04N19/119 ,  H04N19/176 ,  H04N19/189 ,  H04N19/647

摘要： An image encoding method includes configuring block division information and size information of a boundary block which is located at a boundary of an image and is smaller than a size of a basic encoding block, on the basis of size information of a picture and size information of the basic encoding block; dividing the boundary block into at least one encoding block, on the basis of the size information of the basic encoding block and the size information and the block division information of the boundary block; and encoding the at least one divided encoding block.

公开(公告)号：US20240022719A1

公开(公告)日：2024-01-18

申请号：US18356359

申请日：2023-07-21

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Kenneth ANDERSSON ,  Rickard SJÖBERG ,  Jacob STRÖM ,  Zhi ZHANG

IPC分类号： H04N19/117 ,  H04N19/119 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/61 ,  H04N19/86 ,  G06T9/00 ,  H04N19/12 ,  H04N19/189 ,  H04N19/635

CPC分类号： H04N19/117 ,  H04N19/119 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/61 ,  H04N19/86 ,  G06T9/004 ,  H04N19/12 ,  H04N19/189 ,  H04N19/635

摘要： Methods and apparatuses for applying a deblocking to a coding unit in video pictures a provided. In one aspect, the deblocking is applied to sub-block boundaries in the coding unit and to implicit transform unit boundaries in the coding unit.

公开(公告)号：US20240015323A1

公开(公告)日：2024-01-11

申请号：US18468512

申请日：2023-09-15

申请人： Electronics and Telecommunications Research Institute ,  INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY ,  CHIPS&MEDIA, INC ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY

发明人： Sung Chang LIM ,  Jung Won KANG ,  Ha Hyun LEE ,  Jin Ho LEE ,  Hui Yong KIM ,  Yung Lyul LEE ,  Ji Yeon JUNG ,  Nam Uk KIM ,  Myung Jun KIM ,  Yang Woo KIM ,  Dae Yeon KIM ,  Jae Gon KIM

IPC分类号： H04N19/593 ,  H04N19/107 ,  H04N19/127 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/503 ,  G06T9/00 ,  H04N19/189

CPC分类号： H04N19/593 ,  H04N19/107 ,  H04N19/127 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/503 ,  G06T9/004 ,  H04N19/189 ,  H04N19/132

摘要： Disclosed herein is a method of decoding an image. The method includes generating an inter prediction block by performing inter prediction with respect to a current block, generating an intra prediction block by performing intra prediction with respect to the current block, determining a first weight and a second weight, and generating a final prediction block by respectively applying the first weight and the second weight to the inter prediction block and the intra prediction block. The generating of the intra prediction block includes generating the intra prediction block using a predefined intra prediction mode.

公开(公告)号：US20230421773A1

公开(公告)日：2023-12-28

申请号：US18461344

申请日：2023-09-05

申请人： TENCENT AMERICA LLC

发明人： Lien-Fei CHEN ,  Xiang Li ,  Guichun Li

IPC分类号： H04N19/132 ,  H04N19/176 ,  H04N19/189 ,  H04N19/119

CPC分类号： H04N19/132 ,  H04N19/176 ,  H04N19/189 ,  H04N19/119

摘要： Aspects of the disclosure provide methods, apparatuses, and non-transitory computer-readable storage mediums for video encoding/decoding. An apparatus includes processing circuitry that partitions a current block of a current picture based on a geometric partitioning mode (GPM). The current block is partitioned into two partitions in the GPM mode. Each of the partitions is associated with a respective predictor. A weighting index for a sample of the current block is determined based on a position of the sample. A weighting factor is calculated based on the weighting index of the sample according to an equation that converts the weighting index to the weighting factor. The sample is encoded based on the weighting factor and the predictor corresponding to the sample.

公开(公告)号：US11843782B2

公开(公告)日：2023-12-12

申请号：US17977903

申请日：2022-10-31

申请人： TENCENT AMERICA LLC

发明人： Byeongdoo Choi ,  Stephan Wenger ,  Shan Liu

IPC分类号： H04N19/132 ,  H04N19/172 ,  H04N19/146 ,  H04N19/189

CPC分类号： H04N19/132 ,  H04N19/146 ,  H04N19/172 ,  H04N19/189

摘要： There is included a method and apparatus comprising computer code configured to cause a processor or processors to perform acquiring an input bitstream comprising metadata and video data, decoding the video data, determining whether the metadata comprises at least one flag signaling at least one component of a picture size of at least one picture of the video data, and signaling, in a case where it is determined that the metadata comprises the at least one flag, a display device to display the at least one picture from the video data according to the at least one flag.