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公开(公告)号：US12052420B2
公开(公告)日：2024-07-30
申请号：US17509572
申请日：2021-10-25
Inventor： Hongbin Liu , Jizheng Xu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/132 , H04N19/124 , H04N19/159 , H04N19/176 , H04N19/18
CPC classification number: H04N19/132 , H04N19/124 , H04N19/159 , H04N19/176 , H04N19/18
Abstract: A method of video processing includes performing a prediction for a current video block or for a subblock split from the current video block; generating residual samples corresponding to the current video block or the subblock; obtaining quantized residual samples; and coding the quantized residual samples to perform a conversion on the current video block, a first one-dimensional (1-d) transform being applied to the residual samples before residual samples are quantized and/or a second 1-d transform being applied to the quantized residual samples.
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公开(公告)号：US12041223B2
公开(公告)日：2024-07-16
申请号：US17888956
申请日：2022-08-16
Applicant: Bytedance Inc.
Inventor： Weijia Zhu , Li Zhang , Jizheng Xu
IPC: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
CPC classification number: H04N19/105 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70
Abstract: A method includes deriving, for a current video block of a video that is a chroma block and coded in a chroma derived mode (DM), an intra prediction mode for the current video block according to a rule related to a coding mode of the current video block; and performing a conversion between the current video block and a coded presentation of the video, wherein the rule specifies to derive the intra prediction mode based on an intra prediction direction of a corresponding luma block used to derive the chroma DM mode and coded using a block differential pulse code modulation representation of a quantized residual block corresponding to the current video block.
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公开(公告)号：US12034975B2
公开(公告)日：2024-07-09
申请号：US17897998
申请日：2022-08-29
Inventor： Ye-Kui Wang , Zhipin Deng , Li Zhang , Kai Zhang , Jizheng Xu
IPC: H04N19/70 , H04N19/105 , H04N19/117 , H04N19/169 , H04N19/172 , H04N19/174 , H04N19/189 , H04N19/196 , H04N19/46 , H04N19/58 , H04N19/635 , H04N19/82 , H04N19/86 , H04N19/127
CPC classification number: H04N19/70 , H04N19/105 , H04N19/117 , H04N19/172 , H04N19/174 , H04N19/188 , H04N19/189 , H04N19/197 , H04N19/46 , H04N19/58 , H04N19/635 , H04N19/82 , H04N19/86 , H04N19/127
Abstract: A video processing method includes performing a conversion between a video including one or more pictures and a bitstream of the video. The bitstream conforms to a format rule specifying that one or more syntax elements indicative of coding information are selectively included in a picture parameter set of the bitstream responsive to whether it is indicated that each picture referring to the picture parameter set includes a single slice.
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公开(公告)号：US12034964B2
公开(公告)日：2024-07-09
申请号：US17401438
申请日：2021-08-13
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/52 , H04N19/132 , H04N19/137 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/46 , H04N19/513 , H04N19/577
CPC classification number: H04N19/52 , H04N19/132 , H04N19/137 , H04N19/139 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/46 , H04N19/513 , H04N19/577
Abstract: One example method of video processing includes implementing, by a processor, a decoder-side motion vector derivation (DMVD) scheme for motion vector refinement during a conversion between a current video block and a bitstream representation of the current video block by deriving parameters based on a deriving rule. The conversion may include compressing the current video block into the bitstream representation or uncompressing the bitstream representation into pixel values of the current video block.
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公开(公告)号：US12015784B2
公开(公告)日：2024-06-18
申请号：US18345608
申请日：2023-06-30
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N7/12 , H04N19/105 , H04N19/11 , H04N19/132 , H04N19/149 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/189 , H04N19/30 , H04N19/42 , H04N19/50 , H04N19/593 , H04N19/70
CPC classification number: H04N19/149 , H04N19/105 , H04N19/11 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/189 , H04N19/30 , H04N19/42 , H04N19/50 , H04N19/593 , H04N19/70
Abstract: A method for video processing is provided. The method includes determining, for a conversion between a current video block of a video that is a chroma block and a coded representation of the video, a final prediction P(x, y) of a chroma sample at a position (x, y) in the current video block as a combination of prediction results of multiple cross-component linear models (MCCLMs), wherein the MCCLMs are selected based on the position (x, y) of the chroma sample; and performing the conversion based on the final prediction.
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Patent Agency Ranking
公开(公告)号：US12015772B2
公开(公告)日：2024-06-18
申请号：US17950443
申请日：2022-09-22
Inventor： Zhipin Deng , Li Zhang , Ye-Kui Wang , Kai Zhang , Jizheng Xu
IPC: H04N19/105 , H04N19/117 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/463 , H04N19/52 , H04N19/70 , H04N19/80
CPC classification number: H04N19/117 , H04N19/105 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/174 , H04N19/176 , H04N19/186 , H04N19/463 , H04N19/52 , H04N19/70 , H04N19/80
Abstract: A method includes determining, for a conversion between a video block of a video and a bitstream of the video, a size of prediction block corresponding to the video block according to a rule. The method also includes performing the conversion based on the determining. The rule specifies that a first size of the prediction block is determined responsive to whether a prediction refinement using optical flow technique is used for coding the video block. The video block has a second size and is coded using an affine merge mode or an affine advanced motion vector prediction mode.
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公开(公告)号：US12003715B2
公开(公告)日：2024-06-04
申请号：US17954905
申请日：2022-09-28
Inventor： Li Zhang , Weijia Zhu , Kai Zhang , Hongbin Liu , Jizheng Xu
IPC: H04N19/117 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/82
CPC classification number: H04N19/117 , H04N19/132 , H04N19/159 , H04N19/176 , H04N19/82
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.
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公开(公告)号：US12003698B2
公开(公告)日：2024-06-04
申请号：US17321802
申请日：2021-05-17
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/159 , H04N19/105 , H04N19/139 , H04N19/17 , H04N19/176 , H04N19/189 , H04N19/46 , H04N19/52
CPC classification number: H04N19/105 , H04N19/139 , H04N19/159 , H04N19/17 , H04N19/176 , H04N19/189 , H04N19/46 , H04N19/52
Abstract: Devices, systems and methods for digital video coding, which include sub-block based inter prediction methods, are described. An exemplary method for video processing includes determining, for a conversion between a current block of video and a bitstream representation of the video, a maximum number of candidates in a sub-block based merge candidate list and/or whether to add sub-block based temporal motion vector prediction (SbTMVP) candidates to the sub-block based merge candidate list based on whether temporal motion vector prediction (TMVP) is enabled for use during the conversion or whether a current picture referencing (CPR) coding mode is used for the conversion, and performing, based on the determining, the conversion.
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公开(公告)号：US11997318B2
公开(公告)日：2024-05-28
申请号：US17977492
申请日：2022-10-31
Applicant: Bytedance Inc.
Inventor： Ye-kui Wang , Jizheng Xu
IPC: H04N19/00 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/86
CPC classification number: H04N19/86 , H04N19/176 , H04N19/186 , H04N19/70
Abstract: Methods and apparatus for video processing are described. The video processing may include video encoding, video decoding, or video transcoding. One example video processing method includes performing a conversion between a video picture of a video and a bitstream of the video. A first syntax element in a first video unit level specifying a deblocking parameter offset for β divided by 2 applied to a chroma component for one or more slices in a first video unit and a second syntax element in the first video unit level specifying a deblocking parameter offset for tC divided by 2 applied to the chroma component for the one or more slices in the first video unit are determined according to a rule in response to the first syntax element and the second syntax element not included in the bitstream.
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公开(公告)号：US11991382B2
公开(公告)日：2024-05-21
申请号：US17463838
申请日：2021-09-01
Inventor： Weijia Zhu , Hongbin Liu , Kai Zhang , Li Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/176 , H04N19/46 , H04N19/513
CPC classification number: H04N19/513 , H04N19/105 , H04N19/176 , H04N19/46
Abstract: Motion Vector Management for Decoder Side Motion Vector Refinement is disclosed. A method of video processing including: determining, for a conversion between a first block of video and a bitstream representation of the first block of video, whether and/or how to apply decoder-side motion vector refinement (DMVR) based on a signaled information; and performing the conversion based on the determination.
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