-
公开(公告)号：US20220030220A1
公开(公告)日：2022-01-27
申请号：US17479192
申请日：2021-09-20
Inventor： Zhipin DENG , Li ZHANG , Hongbin Liu , Kai Zhang , Jizheng XU
IPC: H04N19/105 , H04N19/96 , H04N19/196 , H04N19/146 , H04N19/176
Abstract: A method for visual media processing, including performing a conversion between a current chroma chroma block of visual media data and a bitstream representation of the current chroma chroma block, wherein, during the conversion, a chroma residual of the current chroma chroma block is scaled based on a scaling coefficient, wherein the scaling coefficient is derived at least based on luma samples located in predefined positions.
-
公开(公告)号：US11228775B2
公开(公告)日：2022-01-18
申请号：US17320008
申请日：2021-05-13
Inventor： Jizheng Xu , Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/433 , H04N19/105 , H04N19/176 , H04N19/186 , H04N19/52 , H04N19/593 , H04N19/80 , H04N19/96 , H04N19/137 , H04N19/517 , H04N19/139 , H04N19/117 , H04N19/86
Abstract: A method of visual media processing includes determining a size of a buffer to store reference samples for prediction in an intra block copy mode; and performing a conversion between a current video block of visual media data and a bitstream representation of the current video block, using the reference samples stored in the buffer, wherein the conversion is performed in the intra block copy mode which is based on motion information related to a reconstructed block located in same video region with the current video block without referring to a reference picture.
-
公开(公告)号：US20220014791A1
公开(公告)日：2022-01-13
申请号：US17484565
申请日：2021-09-24
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/80 , H04N19/523 , H04N19/52
Abstract: A method of video processing is provided to include: deciding a coding mode used for representing a current video block of a video in a coded representation of the video; and coding the current video block into the coded representation according to the coding mode, wherein use of alternative half-pel accuracy filters in addition to a default half-pel accuracy filter for representing motion information is disabled for the current video block due to use of the coding mode.
-
公开(公告)号：US11218702B2
公开(公告)日：2022-01-04
申请号：US17115290
申请日：2020-12-08
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/132 , H04N19/105 , H04N19/117 , H04N19/176 , H04N19/186 , H04N19/30 , H04N19/80
Abstract: A method for video coding includes receiving a bitstream representation of a current block of video data including at least one luma component and at least one chroma component, predicting, using a linear model, a first set of samples of the at least one chroma component based on a second set of samples that is selected by sub-sampling samples of the at least one luma component, and processing, based on the first and second sets of samples, the bitstream representation to generate the current block. In another representative aspect, the second set of samples are neighboring samples of the current block and are used for an intra prediction mode of the at least one luma component.
-
公开(公告)号：US20210392327A1
公开(公告)日：2021-12-16
申请号：US17400397
申请日：2021-08-12
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/12 , H04N19/70 , H04N19/176 , H04N19/124 , H04N19/11
Abstract: A video processing method is provided to include: performing a conversion between a current video block of a video and a coded representation of the video, wherein the coded representation conforms to a format rule that specifies a last non-zero coefficient in a residual of the current video block and controls whether or how side information about a secondary transform tool is included in the coded representation, and wherein the secondary transform tool includes applying, during encoding, a forward secondary transform to an output of a forward primary transform applied to a residual of a video block prior to quantization, or applying, during decoding, an inverse secondary transform to an output of dequantization of the video block before applying an inverse primary transform.
-
Patent Agency Ranking
公开(公告)号：US11197003B2
公开(公告)日：2021-12-07
申请号：US17099042
申请日：2020-11-16
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/176 , H04N19/103 , H04N19/184
Abstract: Devices, systems and methods for sub-block based prediction are described. In a representative aspect, a method for video processing comprises determining a block size constrain, making a determination, based on the block size constrain, about whether or not a merge affine mode and a non-merge affine mode are allowed for a video block in a video frame, and generating a bitstream representation of the video block based on the making the determination.
-
公开(公告)号：US11159816B2
公开(公告)日：2021-10-26
申请号：US16993677
申请日：2020-08-14
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Yue Wang
IPC: H04N19/513 , H04N19/184 , H04N19/44 , H04N19/543 , H04N19/119
Abstract: A method of decoding a bitstream comprising a digital representation of a video includes decoding motion information for a current video block from the bitstream, estimating matching costs of the current video block using one or more templates based on a partial set of pixel locations in each of the one or more templates, where in the each of the one or more templates includes a video block with multiple samples and refining the motion information of the current video block using a template having a minimum matching cost.
-
公开(公告)号：US11146797B2
公开(公告)日：2021-10-12
申请号：US17154736
申请日：2021-01-21
Inventor： Kai Zhang , Li Zhang , Hongbin Liu , Jizheng Xu , Yue Wang
IPC: H04N19/105 , H04N19/117 , H04N19/186 , H04N19/159 , H04N19/176 , H04N19/107 , H04N19/577 , H04N19/96
Abstract: Techniques for implementing video processing techniques are described. In one example implementation, a method of video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, whether a combined inter and intra prediction (CIIP) coding technique is to be applied to the current block based on a characteristic of the current block. The CIIP coding technique uses an intermedia inter prediction value and an intermedia intra prediction value to derive a final prediction value of the current block. The method also includes performing the conversion based on the determining.
-
169.发明授权公开(公告)号：US11140412B2
公开(公告)日：2021-10-05
申请号：US17330889
申请日：2021-05-26
Inventor： Hongbin Liu , Li Zhang , Kai Zhang , Jizheng Xu , Yue Wang
IPC: H04N19/52 , H04N19/56 , H04N19/176 , H04N19/184 , H04N19/593
Abstract: A method for video processing is provided to include constructing, during a conversion between a current video block and a coded representation of the current video block, an intra block copy (IBC) motion candidate list, wherein insertion of motion candidates to the IBC motion candidate list is subject to a size restriction; and performing the conversion using the IBC motion candidate list.
-
公开(公告)号：US11140385B2
公开(公告)日：2021-10-05
申请号：US17005702
申请日：2020-08-28
Inventor： Li Zhang , Kai Zhang , Hongbin Liu , Yue Wang
IPC: H04N19/105 , H04N19/157 , H04N19/137 , H04N19/176 , H04N19/159 , H04N19/184 , H04N19/436 , H04N19/52 , H04N19/61 , H04N19/70 , H04N19/96
Abstract: A method of video processing includes maintaining tables, wherein each table includes a set of motion candidates and each motion candidate is associated with corresponding motion information; and performing a conversion between a first video block and a bitstream representation of a video including the first video block based on at least some of tables, the performing including checking motion candidates in a table in an order defined in a rule until a checking termination criteria is met.
-
-
-
-
-
-
-
-
-
Search Results
946
records
(took 0.034 seconds)
