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公开(公告)号：US20220182667A1
公开(公告)日：2022-06-09
申请号：US17651975
申请日：2022-02-22
Inventor： Junru LI , Meng WANG , Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG , Shiqi WANG
IPC: H04N19/593 , H04N19/186 , H04N19/132 , H04N19/176 , H04N19/105 , H04N19/159
Abstract: A video processing method includes performing a conversion between a video including a video unit and a coded representation of the video, where, after the video unit is encoded or decoded with an intra prediction mode, one or more frequence tables and/or one or more sorted intra prediction mode (IPM) tables are selectively updated according to a rule, where the one or more frequence tables include information about frequence of the intra prediction mode used for processing the video unit in the conversion, where the frequence indicates an occurrence of the intra prediction mode used for the conversion, and where the one or more sorted IPM tables indicate the intra prediction mode used in the processing.
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公开(公告)号：US20250039401A1
公开(公告)日：2025-01-30
申请号：US18913890
申请日：2024-10-11
IPC: H04N19/154 , H04N19/176
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, for a conversion between a current video block of a video and a bitstream of the video, a distortion value of the current video block based on a set of distortion metrics, the set of distortion metrics comprising at least one of: a first distortion metric determined according to a first machine learning model, a second distortion metric determined according to a second machine learning model, or a third distortion metric determined without using the first and second machine learning models; and performing the conversion based on the distortion value. In this way, a rate-distortion optimization process based on the distortion value can be improved, and thus the coding performance can be enhanced.
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公开(公告)号：US20240244239A1
公开(公告)日：2024-07-18
申请号：US18622793
申请日：2024-03-29
IPC: H04N19/42 , H04N19/117 , H04N19/132 , H04N19/147 , H04N19/176 , H04N19/80
CPC classification number: H04N19/42 , H04N19/117 , H04N19/132 , H04N19/147 , H04N19/176 , H04N19/80
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a target video block of a video and a bitstream of the video, a target coding tool for the target video block by using a machine learning model; and performing the conversion by using the target coding tool. By taking the machine learning model into consideration in selecting the coding tool, a more proper coding tool can be selected. In this way, the coding performance can be enhanced.
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公开(公告)号：US20220312020A1
公开(公告)日：2022-09-29
申请号：US17835599
申请日：2022-06-08
IPC: H04N19/159 , H04N19/186 , H04N19/132 , H04N19/172 , H04N19/105 , H04N19/70 , H04N19/11 , H04N19/196
Abstract: Devices, systems and methods for digital video coding, which includes Prediction from Multiple Cross-components (PMC) methods, are described. An exemplary method for video processing includes making a first determination that a cross-component prediction (CCP) mode is disabled for a conversion between a video block of a video and a bitstream representation of the video and making a second determination, based on the first determination, regarding whether a first syntax element indicating usage of an enhanced Two-Step Cross-component Prediction Mode (TSCPM) coding tool or an enhanced cross-component linear model (CCLM) coding tool is included in the bitstream representation. The method also includes performing a conversion based on the second determination
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公开(公告)号：US20250119593A1
公开(公告)日：2025-04-10
申请号：US18986675
申请日：2024-12-18
IPC: H04N19/82 , H04N19/117 , H04N19/186 , H04N19/86
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: applying, for a conversion between a video unit of a video and a bitstream of the video, a connection to a plurality of filters; applying the plurality of filters with the connection in combination to the video unit; and performing the conversion based on the filtered video unit.
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Patent Agency Ranking
公开(公告)号：US20240406389A1
公开(公告)日：2024-12-05
申请号：US18787879
申请日：2024-07-29
IPC: H04N19/117 , H04N19/184 , H04N19/196 , H04N19/70
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: applying, during a conversion between a video unit of a video and a bitstream of the video unit, a plurality of filters in combination based on a model to the video unit; and performing the conversion based on the applying.
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公开(公告)号：US20220182665A1
公开(公告)日：2022-06-09
申请号：US17651956
申请日：2022-02-22
Inventor： Junru LI , Meng WANG , Li ZHANG , Kai ZHANG , Hongbin LIU , Yue WANG , Shiqi WANG
IPC: H04N19/593 , H04N19/167 , H04N19/176 , H04N19/132 , H04N19/186 , H04N19/172 , H04N19/105 , H04N19/159
Abstract: A video processing method includes performing a conversion between a video including a video unit and a coded representation of the video, where, upon processing the video unit in the conversion, one or more frequence tables are selectively updated to include information about frequence of one or more intra prediction modes of the video unit used in the processing, where the frequence indicates an occurrence of the one or more intra prediction modes used for the conversion, and where, upon processing the video unit, one or more sorted intra prediction mode (IPM) tables are selectively updated to indicate the one or more intra prediction modes used in the processing.
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公开(公告)号：US20240388704A1
公开(公告)日：2024-11-21
申请号：US18787873
申请日：2024-07-29
IPC: H04N19/117 , H04N19/124 , H04N19/176 , H04N19/42 , H04N19/80
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: applying, during a conversion between a video unit of a video and a bitstream of the video unit, a plurality of filters in combination to the video unit; and performing the conversion based on the filtered video unit.
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公开(公告)号：US20240244226A1
公开(公告)日：2024-07-18
申请号：US18622405
申请日：2024-03-29
IPC: H04N19/147 , H04N19/132 , H04N19/176 , H04N19/42 , H04N19/80
CPC classification number: H04N19/147 , H04N19/176 , H04N19/42 , H04N19/80 , H04N19/132
Abstract: Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a target video block of a video and a bitstream of the video, a distortion metric for the target video block based at least in part on at least one distortion of: a set of filtered distortions of the target video block according to a set of machine learning models, or a second distortion of the target video block determined without using the set of machine learning models; determining, based on the distortion metric, information regarding using the set of machine learning models in a rate-distortion optimization (RDO) process on the target video block; and performing the conversion based on the information. In this way, the RDO process can be improved, and thus the coding performance can be enhanced.
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公开(公告)号：US20240179343A1
公开(公告)日：2024-05-30
申请号：US18285251
申请日：2022-04-01
Inventor： Kai ZHANG , Li ZHANG , Yuhuai ZHANG , Junru LI , Siwei MA
IPC: H04N19/593 , H04N19/159 , H04N19/176
CPC classification number: H04N19/593 , H04N19/159 , H04N19/176
Abstract: Embodiments of the present disclosure provide a solution for video processing. In some embodiments, a method for video processing is proposed, which comprises: reordering at least one intra string copy (ISC) reference string, the at least one ISC reference string matching with at least one string of a block of a video; reconstructing the block based on the reordered at least one ISC reference string; and performing a conversion between the reconstructed block and a bitstream of the video. The proposed method can advantageously improve the coding efficiency.
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