公开(公告)号：US12167043B2

公开(公告)日：2024-12-10

申请号：US18370081

申请日：2023-09-19

Applicant: Telefonaktiebolaget LM Ericsson (publ)

Inventor： Kenneth Andersson ,  Jack Enhorn ,  Zhi Zhang

IPC: H04N19/86 ,  H04N19/11 ,  H04N19/117 ,  H04N19/12 ,  H04N19/132 ,  H04N19/167 ,  H04N19/176 ,  H04N19/61 ,  H04N19/80

Abstract: A method for deblocking at least one boundary of a coding unit. The method includes determining that the coding unit uses a sub-block transform, wherein the sub-block transform generates a transform sub-block boundary within the coding unit, thereby forming at least a transform sub-block within the coding unit; as a result of determining that the coding unit uses the sub-block transform, determining a maximum filter length based on a dimension of the transform sub-block within the coding unit, wherein the maximum filter length indicates a maximum number of samples to modify when deblocking a boundary of the coding unit; and deblocking the boundary of the coding unit based on the determined maximum filter length.

公开(公告)号：US12167035B2

公开(公告)日：2024-12-10

申请号：US18112234

申请日：2023-02-21

Applicant: InterDigital VC Holdings, Inc.

Inventor： Xiaoyu Xiu ,  Yuwen He ,  Yan Ye

IPC: H04N19/597 ,  G06T3/00 ,  G06T3/16 ,  H04N19/12 ,  H04N19/61

Abstract: A system, method, and/or instrumentality may be provided for coding a 360-degree video. A picture of the 360-degree video may be received. The picture may include one or more faces associated with one or more projection formats. A first projection format indication may be received that indicates a first projection format may be associated with a first face. A second projection format indication may be received that indicates a second projection format may be associated with a second face. Based on the first projection format, a first transform function associated with the first face may be determined. Based on the second projection format, a second transform function associated with the second face may be determined. At least one decoding process may be performed on the first face using the first transform function and/or at least one decoding process may be performed on the second face using the second transform function.

公开(公告)号：US12166984B2

公开(公告)日：2024-12-10

申请号：US17541013

申请日：2021-12-02

Applicant: Beijing Bytedance Network Technology Co., Ltd. ,  Bytedance Inc.

Inventor： Kai Zhang ,  Li Zhang ,  Hongbin Liu ,  Yue Wang

IPC: H04N19/12 ,  H04N19/159 ,  H04N19/176 ,  H04N19/61 ,  H04N19/625

Abstract: Devices, systems and methods for digital video coding, which includes using multiple transforms, are described. In a representative aspect, a method for video processing includes making a decision, for a current block of a video, regarding an application of a transform to the current block based on an indication in a bitstream representation of the video at a coding unit (CU) level, a coding block (CB) level, or a transform unit (TU) level, and performing, based on the decision, a conversion between the current block and the bitstream representation.

公开(公告)号：US20240386613A1

公开(公告)日：2024-11-21

申请号：US18787103

申请日：2024-07-29

Applicant: Panasonic Intellectual Property Corporation of America

Inventor： Toshiyasu SUGIO ,  Noritaka Iguchi

IPC: G06T9/00 ,  H04N19/12 ,  H04N19/167 ,  H04N19/17 ,  H04N19/184 ,  H04N19/33

Abstract: A three-dimensional data encoding method includes: (i) when a number of three-dimensional points included in point cloud data to be encoded is n that is greater than a predetermined number, n being an integer greater than or equal to 2, calculating an encoding coefficient by generating a hierarchical structure in which each of n pieces of attribute information on the three-dimensional points is sorted into one of a higher frequency component and a lower frequency component to be layered, and generating a bitstream including the encoding coefficient calculated in the calculating; and (ii) when a number of three-dimensional points included in the point cloud data is m that is smaller than or equal to the predetermined number, m being an integer greater than or equal to 1, generating a bitstream in accordance with m pieces of attribute information on the three-dimensional points without generating a hierarchy structure.

公开(公告)号：US20240373008A1

公开(公告)日：2024-11-07

申请号：US18772875

申请日：2024-07-15

Applicant: LG Electronics Inc.

Inventor： Hilmi Enes EGILMEZ ,  Jana Ehmann ,  Onur G. GULERYUZ

IPC: H04N19/12 ,  H04N19/159 ,  H04N19/18 ,  H04N19/61

Abstract: The present invention, with respect to a method of processing video data, provides a method of processing video data, provides a method characterized by comprising the steps of: performing a clustering for the video data; generating at least one data cluster as a result of the clustering; generating at least one Graph laplacian matrix corresponding to the at least one data cluster; performing conversion optimization on the basis of multiple graph-based models, wherein the multiple graph-based models respectively include at least one graph laplacian matrix; and generating an optimized conversion matrix according to the results of performing the conversion optimization.

公开(公告)号：US20240364931A1

公开(公告)日：2024-10-31

申请号：US18763495

申请日：2024-07-03

Applicant: BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.

Inventor： Xiaoyu XIU ,  Yi-Wen CHEN ,  Tsung-Chuan MA ,  Hong-Jheng JHU ,  Xianglin WANG ,  Bing YU

IPC: H04N19/70 ,  H04N19/12 ,  H04N19/132 ,  H04N19/136 ,  H04N19/174 ,  H04N19/186 ,  H04N19/30 ,  H04N19/60

CPC classification number: H04N19/70 ,  H04N19/12 ,  H04N19/132 ,  H04N19/136 ,  H04N19/174 ,  H04N19/186 ,  H04N19/30 ,  H04N19/60

Abstract: An electronic apparatus performs a method of decoding video data, including receiving, from bitstream, a first syntax element in a slice header of a slice that indicates whether luma mapping with chroma scaling (LMCS) is applied to a coding unit in the slice; receiving a second syntax element for the coding unit that indicates whether the coding unit has been coded using adaptive color-space transform (ACT); if the second syntax element has a non-zero value, decoding the coding unit by applying inverse ACT to convert luma and chroma residuals of the coding unit from a transformed color space to an original color space of the video data; and if the first syntax element has a non-zero value, decoding the coding unit by performing inverse luma mapping to the luma samples and inverse scaling to the chroma residuals of the coding unit after performing the inverse ACT.

公开(公告)号：US20240364883A1

公开(公告)日：2024-10-31

申请号：US18767880

申请日：2024-07-09

Applicant: Hangzhou Hikvision Digital Technology Co., Ltd.

Inventor： Xiaoqiang Cao ,  Fangdong Chen ,  Li Wang

IPC: H04N19/12 ,  H04N19/13 ,  H04N19/176 ,  H04N19/46 ,  H04N19/625

CPC classification number: H04N19/12 ,  H04N19/13 ,  H04N19/176 ,  H04N19/46 ,  H04N19/625

Abstract: Provided is a decoding method, including: acquiring coded data of a current block; determining that a height and a width of the current block are both less than or equal to a preset threshold and the current block is a luma block; acquiring a transform pair index corresponding to the current block from the coded data, and determining the transform pair corresponding to the current block based on the transform pair index, wherein the transform pair comprises a horizontal transform kernel and a vertical transform kernel.

公开(公告)号：US20240357136A1

公开(公告)日：2024-10-24

申请号：US18753511

申请日：2024-06-25

Applicant: LG ELECTRONICS INC.

Inventor： Moonmo Koo ,  Seunghwan Kim ,  Jaehyun Lim

IPC: H04N19/186 ,  H04N19/12 ,  H04N19/136 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61

CPC classification number: H04N19/186 ,  H04N19/12 ,  H04N19/136 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61

Abstract: An image decoding method according to the present document comprises the step of deriving modified transform coefficients, wherein the step of deriving the modified transform coefficients comprises the step of parsing an LFNST index on the basis of a variable indicating whether an ISP is applied to a current block or whether an effective coefficient is present in a DC component of the current block, according to the tree type of the current block, wherein the variable may be derived on the basis of an individual transform skip flag value for a color component of the current block.

公开(公告)号：US20240357119A1

公开(公告)日：2024-10-24

申请号：US18738130

申请日：2024-06-10

Applicant: ALIBABA GROUP HOLDING LIMITED

Inventor： Mohammed Golam SARWER ,  Jiancong LUO ,  Yan YE

IPC: H04N19/132 ,  H04N19/12 ,  H04N19/124 ,  H04N19/176 ,  H04N19/189 ,  H04N19/46 ,  H04N19/61

CPC classification number: H04N19/132 ,  H04N19/12 ,  H04N19/124 ,  H04N19/176 ,  H04N19/189 ,  H04N19/46 ,  H04N19/61

Abstract: The present disclosure provides systems and methods for performing residual coding of video data. According to certain disclosed embodiments, the methods include: receiving control information for coding a video sequence; and determining, based on the control information, a coding method for coding a prediction residual signal of a coding block in the video sequence. The coding method is one of a transform residual coding and a transform-skip residual coding.

公开(公告)号：US20240323451A1

公开(公告)日：2024-09-26

申请号：US18189831

申请日：2023-03-24

Applicant: ATI Technologies ULC

Inventor： Ihab M. A. Amer ,  Konstantin Moskvitin ,  Haibo Liu ,  Mehdi Saeedi ,  Ho Hin Lau ,  Mehdi Semsarzadeh

IPC: H04N19/85 ,  H04N19/12 ,  H04N19/13 ,  H04N19/156 ,  H04N19/176 ,  H04N19/61

CPC classification number: H04N19/85 ,  H04N19/12 ,  H04N19/13 ,  H04N19/156 ,  H04N19/176 ,  H04N19/61

Abstract: A technique for performing video operations is provided. The technique includes decoding underlying content to obtain a decoded block; and applying a shade pattern to the decoded block to obtain a final block.