-
公开(公告)号：US11985317B2
公开(公告)日：2024-05-14
申请号：US18154333
申请日：2023-01-13
Inventor： Jizheng Xu , Kai Zhang , Li Zhang , Hongbin Liu , Zhipin Deng , Yue Wang
IPC: H04N19/122 , H04N19/103 , H04N19/132 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/186 , H04N19/30 , H04N19/46 , H04N19/60 , H04N19/124
CPC classification number: H04N19/122 , H04N19/103 , H04N19/132 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/186 , H04N19/30 , H04N19/46 , H04N19/60 , H04N19/124
Abstract: Methods, systems, and devices for coefficient scaling for high-precision image and video coding are described. An example method of video processing includes performing a conversion between a current block of a video and a bitstream representation of the video according to a rule. The rule specifies that the conversion includes during encoding, skipping applying a forward transform to residual coefficients of the current block prior to including in the bitstream representation, or during decoding, reconstructing residual coefficients of the current block from the bitstream representation without applying an inverse transform. The rule further specifies that a scale factor is applied to the residual coefficients independent of a size of the current block.
-
公开(公告)号：US11979567B2
公开(公告)日：2024-05-07
申请号：US17982038
申请日：2022-11-07
Inventor： Yang Wang , Li Zhang , Hongbin Liu , Kai Zhang , Zhipin Deng , Yue Wang
IPC: H04N19/00 , H04N19/117 , H04N19/186 , H04N19/96
CPC classification number: H04N19/117 , H04N19/186 , H04N19/96
Abstract: A method for video processing is described. The method includes determining, for a conversion between a video unit of a video and a bitstream representation of the video, whether to enable a mirrored padding process for padding an unavailable luma sample during an application of a loop filtering tool to the video unit; and performing the conversion based on the determining.
-
公开(公告)号：US11973931B2
公开(公告)日：2024-04-30
申请号：US17691910
申请日：2022-03-10
Inventor： Yang Wang , Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/132 , H04N19/103 , H04N19/105 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/46 , H04N19/50
CPC classification number: H04N19/103 , H04N19/105 , H04N19/132 , H04N19/137 , H04N19/159 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/46 , H04N19/50
Abstract: A method of video processing is described. The method includes: deriving, for a conversion between a current block of a video and a coded representation of the video, a prediction block for the current block that is determined according to a tool in which weights are used to determine a weighted sum of two initial prediction blocks used to determine the prediction block; and performing the conversion using the prediction block; wherein the deriving includes: applying the weights to two intermediate prediction samples that respectively belong to the two initial prediction blocks to derive a final prediction sample; and performing a right shift operation for the final prediction sample, wherein the right shift operation is pbSample>> (shift1+3)), wherein pbSample represents the final prediction sample, shift1 is set equal to Max(2, 14−bitDepth); and determining the prediction block based on the final prediction sample.
-
公开(公告)号：US20240137574A1
公开(公告)日：2024-04-25
申请号：US18395526
申请日：2023-12-23
Inventor： Wenbin Yin , Kai Zhang , Li Zhang
IPC: H04N19/80 , H04N19/177
CPC classification number: H04N19/80 , H04N19/177
Abstract: A mechanism for processing video data is disclosed. The mechanism determines to classify picture data into groups based on statistical information related to the picture data and apply a bilateral filter to filter samples in each of the groups. A conversion is performed between a visual media data and a bitstream based on the bilateral filter.
-
公开(公告)号：US20240137517A1
公开(公告)日：2024-04-25
申请号：US18397302
申请日：2023-12-27
Inventor： Chaoyi Lin , Yue Li , Kai Zhang , Zhaobin Zhang , Li Zhang
IPC: H04N19/132 , G06T3/4046 , G06T3/4053 , H04N19/33 , H04N19/59 , H04N19/88
CPC classification number: H04N19/132 , G06T3/4046 , G06T3/4053 , H04N19/33 , H04N19/59 , H04N19/88
Abstract: A method of processing video data. The method includes applying a super resolution (SR) process to a video unit at a specific position relative to one or more in-loop filters when the one or more in-loop filters are applied to the video unit, and performing a conversion between a video comprising the video unit and a bitstream of the video based on the SR process and the one or more in-loop filters as applied. A corresponding video coding apparatus and non-transitory computer-readable recording medium are also disclosed.
-
Patent Agency Ranking
公开(公告)号：US11968402B2
公开(公告)日：2024-04-23
申请号：US17898051
申请日：2022-08-29
Inventor： Zhipin Deng , Ye-kui Wang , Li Zhang , Kai Zhang , Kui Fan
IPC: H04N19/70 , H04N19/105 , H04N19/107 , H04N19/11 , H04N19/117 , H04N19/122 , H04N19/132 , H04N19/139 , H04N19/169 , H04N19/172 , H04N19/174 , H04N19/186 , H04N19/196 , H04N19/30 , H04N19/61
CPC classification number: H04N19/70 , H04N19/105 , H04N19/107 , H04N19/11 , H04N19/117 , H04N19/122 , H04N19/132 , H04N19/139 , H04N19/172 , H04N19/174 , H04N19/186 , H04N19/188 , H04N19/196 , H04N19/30 , H04N19/61
Abstract: Methods, systems, apparatus for video processing are described. A method for processing video includes performing a conversion between a video and a bitstream of the video according to a format rule, and wherein the format rule specifies whether a syntax element in a sequence parameter set (SPS) based on a value of a general constraint flag.
-
公开(公告)号：US11968361B2
公开(公告)日：2024-04-23
申请号：US17523131
申请日：2021-11-10
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.
-
58.发明公开公开(公告)号：US20240129536A1
公开(公告)日：2024-04-18
申请号：US18396893
申请日：2023-12-27
Inventor： Ye-Kui Wang , Yang Wang , Li Zhang
IPC: H04N19/70 , H04N19/103 , H04N19/136 , H04N19/172 , H04N19/184
CPC classification number: H04N19/70 , H04N19/103 , H04N19/136 , H04N19/172 , H04N19/184
Abstract: A mechanism for processing video data is disclosed. A value of an extended dependent random-access point (EDRAP) leading pictures decodable flag (edrap_leading_pictures_decodable_flag) syntax element is determined. A conversion can then be performed between a visual media data and a bitstream based on the edrap_leading_pictures_decodable_flag syntax element. The value of the edrap_leading_pictures_decodable_flag indicates whether ordering constraints are imposed on the EDRAP picture.
-
公开(公告)号：US20240121410A1
公开(公告)日：2024-04-11
申请号：US18528070
申请日：2023-12-04
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/176 , H04N19/105 , H04N19/107 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/167 , H04N19/583
CPC classification number: H04N19/176 , H04N19/105 , H04N19/107 , H04N19/117 , H04N19/119 , H04N19/132 , H04N19/139 , H04N19/159 , H04N19/167 , H04N19/583
Abstract: Devices, systems and methods for applying intra-block copy (IBC) in video coding are described. In general, methods for integrating IBC with existing motion compensation algorithms for video encoding and decoding are described. In a representative aspect, a method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using a motion compensation algorithm, and encoding, based on the determining, the current block by selectively applying an intra-block copy to the current block. In a representative aspect, another method for video encoding using IBC includes determining whether a current block of the current picture is to be encoded using an intra-block copy, and encoding, based on the determining, the current block by selectively applying a motion compensation algorithm to the current block.
-
公开(公告)号：US11956448B2
公开(公告)日：2024-04-09
申请号：US18076869
申请日：2022-12-07
Inventor： Kai Zhang , Yuwen He , Li Zhang , Hongbin Liu , Tianliang Fu , Junru Li , Siwei Ma
IPC: H04N19/157 , H04N19/176 , H04N19/186
CPC classification number: H04N19/157 , H04N19/176 , H04N19/186
Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of processing video data includes determining, for a conversion between a video block of a video and a bitstream of the video, a gradient of a prediction vector at a sub-block level for the video block according to a rule, wherein the rule specifies to use a same gradient value is assigned for all samples within a sub-block of the video block; and performing the conversion based on the determining.
-
-
-
-
-
-
-
-
-
Search Results
1338
records
(took 0.033 seconds)
