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公开(公告)号：US20240364931A1
公开(公告)日：2024-10-31
申请号：US18763495
申请日：2024-07-03
发明人： Xiaoyu XIU , Yi-Wen CHEN , Tsung-Chuan MA , Hong-Jheng JHU , Xianglin WANG , Bing YU
IPC分类号： H04N19/70 , H04N19/12 , H04N19/132 , H04N19/136 , H04N19/174 , H04N19/186 , H04N19/30 , H04N19/60
CPC分类号： H04N19/70 , H04N19/12 , H04N19/132 , H04N19/136 , H04N19/174 , H04N19/186 , H04N19/30 , H04N19/60
摘要： 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.
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公开(公告)号：US20240364926A1
公开(公告)日：2024-10-31
申请号：US18746051
申请日：2024-06-18
发明人： Ki Baek KIM
IPC分类号： H04N19/597 , G06T3/16 , H04N13/00 , H04N13/139 , H04N13/161 , H04N19/70
CPC分类号： H04N19/597 , G06T3/16 , H04N13/139 , H04N13/161 , H04N19/70 , H04N2013/0085
摘要： Disclosed are methods and apparatuses for image data encoding/decoding. A method of decoding an image includes receiving a bitstream in which the image is encoded; obtaining index information for specifying a block division type of a current block in the image; and determining the block division type of the current block from a candidate group pre-defined in the decoding apparatus. The candidate group includes a plurality of candidate division types, including at least one of a non-division, a first quad-division, a second quad-division, a binary-division or a triple-division. The method also includes dividing the current block into a plurality of sub-blocks; and decoding each of the sub-blocks with reference to syntax information obtained from the bitstream.
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公开(公告)号：US20240364887A1
公开(公告)日：2024-10-31
申请号：US18770082
申请日：2024-07-11
申请人： Sun Patent Trust
发明人： Daisaku KOMIYA , Takahiro NISHI , Youji SHIBAHARA , Hisao SASAI , Toshiyasu SUGIO , Kyoko TANIKAWA , Toru MATSUNOBU
IPC分类号： H04N19/124 , G06T9/00 , H04N19/13 , H04N19/134 , H04N19/17 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/436 , H04N19/46 , H04N19/503 , H04N19/51 , H04N19/593 , H04N19/60 , H04N19/70
CPC分类号： H04N19/124 , G06T9/00 , G06T9/005 , G06T9/007 , G06T9/008 , H04N19/13 , H04N19/134 , H04N19/17 , H04N19/172 , H04N19/174 , H04N19/176 , H04N19/436 , H04N19/46 , H04N19/503 , H04N19/51 , H04N19/593 , H04N19/60 , H04N19/70
摘要： A processor obtains pieces of coded data, which are included in a bitstream and generated by coding tiles, and tile boundary independence information, which indicates whether each boundary between the tiles is a first or second boundary. Image data of a first tile is generated by decoding a first code string included in first coded data with reference to decoding information of a decoded tile when the tile boundary independence information indicates the first boundary, and by decoding the first code string without referring to the decoding information when the tile boundary independence information indicates the second boundary. A bit string is added after the first code string to make a bit length of first coded data a multiple of a predetermined N bits, with N being an integer greater than or equal to 2.
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公开(公告)号：US20240364863A1
公开(公告)日：2024-10-31
申请号：US18643957
申请日：2024-04-23
申请人： Tencent America LLC
发明人： Lien-Fei CHEN , Roman CHERNYAK , Xiaozhong XU , Shan LIU
IPC分类号： H04N19/105 , H04N19/132 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/593 , H04N19/70
CPC分类号： H04N19/105 , H04N19/132 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/593 , H04N19/70
摘要： Various implementations described herein include methods and systems for coding video. In one aspect, a video bitstream includes a current image frame and a first syntax element for a bi-predictive intra block copy (IBC) mode. Based on the first syntax element, it is determined that a current coding block of the current image frame is coded with two reference coding blocks located in a reconstructed portion of the current image frame according to the bi-predictive IBC mode. The two reference coding blocks corresponding to the current coding block are identified in the reconstructed portion of the current image frame. A target weight associated with the two reference coding blocks is adaptively determined for the current coding block, and used to combine the two reference coding blocks and predict the current coding block. The current image frame is reconstructed, and includes the current coding block.
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公开(公告)号：US12132935B2
公开(公告)日：2024-10-29
申请号：US17428878
申请日：2020-01-10
发明人： Celine Guede , Julien Ricard , Joan Llach
IPC分类号： H04N19/70 , H04N21/234 , H04N21/235 , H04N21/435 , H04N21/44 , H04N21/81 , H04N21/845 , H04N21/854
CPC分类号： H04N19/70 , H04N21/2353 , H04N21/816
摘要： At least one embodiment relates to a method for transmitting PLRM metadata that removes the dependency between PLRM metadata and the occupancy map and the bloc to patch information BlockToPatch.
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公开(公告)号：US12132918B2
公开(公告)日：2024-10-29
申请号：US17915302
申请日：2021-03-29
申请人： LG ELECTRONICS INC.
发明人： Seethal Paluri , Hendry Hendry , Seung Hwan Kim
IPC分类号： H04N19/423 , H04N19/70
CPC分类号： H04N19/423 , H04N19/70
摘要： Disclosed herein are an image encoding and decoding method and apparatus for signaling information on the number of DPB parameters, and a recording medium storing a bitstream. An image decoding method may comprise obtaining first information indicating the number of decoded picture buffer (DPB) parameter syntax structures in a video parameter set (VPS), computing the number of DPB parameter syntax structures in the VPS based on the first information, obtaining the DPB parameter syntax structures in the VPS based on the number of DPB parameter syntax structures, and managing a DPB based on the DPB parameter syntax structures.
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公开(公告)号：US12132899B2
公开(公告)日：2024-10-29
申请号：US17882590
申请日：2022-08-07
发明人： Yang Wang , Li Zhang , Hongbin Liu , Kai Zhang , Yue Wang
IPC分类号： H04N19/119 , H04N19/176 , H04N19/70 , H04N19/96
CPC分类号： H04N19/119 , H04N19/176 , H04N19/70 , H04N19/96
摘要： BV list construction process of IBC blocks under merge estimation region is described. An example method of video processing includes determining, for a conversion between a current video block of a video and a bitstream of the video, one or more block vector (BV) candidates for the current video block based on a merge estimation region (MER) covering the current video block; adding the one or more BV candidates to a BV list associated with the current video block; and performing the conversion based on the BV list.
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公开(公告)号：US12131561B2
公开(公告)日：2024-10-29
申请号：US18073984
申请日：2022-12-02
申请人： TENCENT AMERICA LLC
发明人： Iraj Sodagar
摘要： There is included a method and apparatus comprising computer code configured to cause a processor or processors to impement obtaining a dynamic adaptive streaming over HTTP (DASH) video bitstream comprising one or more subpictures, determining whether the one or more subpictures include Versatile Video Coding (VVC) compliant subpictures, in response to the DASH video bitstream including the VVC compliant subpictures, annotating the one or more subpictures based on one or more flags, and manipulating the DASH video stream based on the annotated one or more subpictures.
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公开(公告)号：US20240357178A1
公开(公告)日：2024-10-24
申请号：US18762051
申请日：2024-07-02
发明人： Krit Panusopone , Limin Wang
IPC分类号： H04N19/64 , H04N19/107 , H04N19/119 , H04N19/124 , H04N19/13 , H04N19/172 , H04N19/176 , H04N19/46 , H04N19/503 , H04N19/593 , H04N19/61 , H04N19/70
CPC分类号： H04N19/647 , H04N19/119 , H04N19/124 , H04N19/13 , H04N19/172 , H04N19/176 , H04N19/46 , H04N19/503 , H04N19/593 , H04N19/70 , H04N19/107 , H04N19/61
摘要： A method of partitioning a video coding block for JVET, comprising representing a JVET coding tree unit as a root node in a quadtree plus binary tree (QTBT) structure that can have a quadtree branching from the root node and binary trees branching from each of the quadtree's leaf nodes using asymmetric binary partitioning to split a coding unit represented by a quadtree leaf node into two child coding units of unequal size, representing the two child coding units as leaf nodes in a binary tree branching from the quadtree leaf node and coding the child coding units represented by leaf nodes of the binary tree with JVET, wherein further partitioning of child coding units split from quadtree leaf nodes via asymmetric binary partitioning is disallowed.
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公开(公告)号：US20240357176A1
公开(公告)日：2024-10-24
申请号：US18602103
申请日：2024-03-12
申请人： LG Electronics Inc.
发明人： Moonmo KOO , Jaehyun LIM , Seunghwan KIM
IPC分类号： H04N19/625 , H04N19/105 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/70
CPC分类号： H04N19/625 , H04N19/105 , H04N19/132 , H04N19/176 , H04N19/18 , H04N19/70
摘要： A method for processing a video includes determining a horizontal transform type index for a horizontal transform kernel and a vertical transform type index for a vertical transform kernel of a transform block in the video signal, determining a transform region in which a significant transform coefficient exists in the transform block based on the horizontal transform type index, the vertical transform type index, and a size of the transform block, and applying inverse-transform to the transform region based on the horizontal transform type index and the vertical transform type index. A width of the transform region is determined based on a comparison between the horizontal transform type index and a reference value and a height of the transform region is determined based on a comparison between the vertical transform type index and the reference value.
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