公开(公告)号：US20240357131A1

公开(公告)日：2024-10-24

申请号：US18757156

申请日：2024-06-27

申请人： QUALCOMM Incorporated

发明人： Kai Zhang ,  Jianle Chen ,  Li Zhang ,  Xiang Li ,  Marta Karczewicz

IPC分类号： H04N19/159 ,  H04N19/107 ,  H04N19/11 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/463 ,  H04N19/503 ,  H04N19/513 ,  H04N19/593 ,  H04N19/186

CPC分类号： H04N19/159 ,  H04N19/107 ,  H04N19/11 ,  H04N19/124 ,  H04N19/139 ,  H04N19/176 ,  H04N19/182 ,  H04N19/44 ,  H04N19/463 ,  H04N19/503 ,  H04N19/513 ,  H04N19/593 ,  H04N19/186

摘要： Techniques are described for using an inter-intra-prediction block. A video coder may generate a first prediction block according to an intra-prediction mode and generate a second prediction block according to an inter-prediction mode. The video coder may weighted combine, such as based on the intra-prediction mode, the two prediction blocks to generate an inter-intra-prediction block (e.g., final prediction block). In some examples, an inter-intra candidate is identified in a list of candidate motion vector predictors, and an inter-intra-prediction block is used based on identification of the inter-intra candidate in the list of candidate motion vector predictors.

公开(公告)号：US11877001B2

公开(公告)日：2024-01-16

申请号：US16155744

申请日：2018-10-09

申请人： QUALCOMM Incorporated

发明人： Kai Zhang ,  Jianle Chen ,  Xin Zhao ,  Marta Karczewicz

IPC分类号： H04N19/52 ,  H04N19/70 ,  H04N19/96 ,  H04N19/184 ,  H04N19/176 ,  H04N19/174 ,  H04N19/109 ,  H04N19/147 ,  H04N19/54

CPC分类号： H04N19/52 ,  H04N19/109 ,  H04N19/147 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/54 ,  H04N19/70 ,  H04N19/96

摘要： A device for video decoding can be configured to obtain, from a syntax structure in a bitstream comprising an encoded representation of the video data, a syntax element indicating whether 6-parameter affine prediction is enabled for blocks corresponding to the syntax structure, wherein the blocks corresponding to the syntax structure comprise a first block; based on the syntax element indicating that the 6-parameter affine prediction is enabled for the blocks corresponding to the syntax structure, use the 6-parameter affine prediction to generate a predictive block for the first block; and use the predictive block and residual data to reconstruct the first block.

公开(公告)号：US20230328255A1

公开(公告)日：2023-10-12

申请号：US18335757

申请日：2023-06-15

申请人： QUALCOMM Incorporated

发明人： Hongtao Wang ,  Jianle Chen ,  Marta Karczewicz

IPC分类号： H04N19/146 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46

CPC分类号： H04N19/146 ,  H04N19/176 ,  H04N19/186 ,  H04N19/46

摘要： An example method includes predicting, based on a plurality of color components of a block of video data coded using joint coding of chroma residuals (JCCR), a sign of a coefficient of a plurality of coefficients of a joint residual block of the block of video data; generating, for each respective color component of the plurality of color components and based on the plurality of coefficients of the joint residual block, coefficients of a respective residual block of a plurality of residual blocks; and reconstructing, based on the plurality of residual blocks, the block of video data.

公开(公告)号：US11743509B2

公开(公告)日：2023-08-29

申请号：US17650935

申请日：2022-02-14

申请人： QUALCOMM Incorporated

发明人： Li Zhang ,  Wei-Jung Chien ,  Jianle Chen ,  Xin Zhao ,  Marta Karczewicz

IPC分类号： H04N19/96 ,  H04N19/70 ,  H04N19/593 ,  H04N19/11 ,  H04N19/463 ,  H04N19/186 ,  H04N19/46 ,  H04N19/124 ,  H04N19/91

CPC分类号： H04N19/96 ,  H04N19/11 ,  H04N19/186 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70 ,  H04N19/124 ,  H04N19/91

摘要： An example device includes a memory and processing circuitry in communication with the memory. The processing circuitry of a device is configured to form a most probable mode (MPM) candidate list for a chroma block of the video data stored to the memory, such that the MPM candidate list includes one or more derived modes (DMs) associated with a luma block of the video data associated with the chroma block, and a plurality of luma prediction modes that can be used for coding luminance components of the video data. The processing circuitry is further configured to select a mode from the MPM candidate list, and to code the chroma block according to the mode selected from the MPM candidate list.

公开(公告)号：US11736687B2

公开(公告)日：2023-08-22

申请号：US16141714

申请日：2018-09-25

申请人： QUALCOMM Incorporated

发明人： Sungwon Lee ,  Wei-Jung Chien ,  Adarsh Krishnan Ramasubramonian ,  Muhammed Zeyd Coban ,  Jianle Chen ,  Yi-Wen Chen ,  Marta Karczewicz

IPC分类号： H04N19/114 ,  H04N19/70 ,  H04N19/159 ,  H04N19/107 ,  H04N19/31 ,  H04N19/187

CPC分类号： H04N19/114 ,  H04N19/107 ,  H04N19/159 ,  H04N19/187 ,  H04N19/31 ,  H04N19/70

摘要： A device for encoding video data includes a memory configured to store video data, and a video encoder implemented in circuitry and configured to encode a future picture of the video data having a first display order position, the future picture being included in an intra period (IP) of the video data, the IP comprising a plurality of groups of pictures (GOPs), and after encoding the future picture, encode a picture of an ordinal first GOP of the plurality of GOPs using the future picture as a reference picture, each picture of the ordinal first GOP having display order positions earlier than the first display order position. Encoding the future picture in this manner may result in encoding performance improvements with minimal increases in encoding and decoding complexity.

公开(公告)号：US11659197B2

公开(公告)日：2023-05-23

申请号：US17222380

申请日：2021-04-05

申请人： QUALCOMM Incorporated

发明人： Han Huang ,  Jianle Chen ,  Wei-Jung Chien ,  Marta Karczewicz

IPC分类号： H04N19/52 ,  H04N19/70 ,  H04N19/176 ,  H04N19/132 ,  H04N19/46

CPC分类号： H04N19/52 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70

摘要： An example method includes encoding, in a video bitstream, a first syntax element specifying whether affine model based motion compensation is enabled; based on affine model based motion compensation being enabled, encoding, in the video bitstream, a second syntax element specifying a maximum number of subblock-based merging motion vector prediction candidates, wherein a value of the second syntax element is constrained based on a value other than a value of the first syntax element; and encoding a picture of the video data based on the maximum number of subblock-based merging motion vector prediction candidates.

公开(公告)号：US20220256203A1

公开(公告)日：2022-08-11

申请号：US17650935

申请日：2022-02-14

申请人： QUALCOMM Incorporated

发明人： Li Zhang ,  Wei-Jung Chien ,  Jianle Chen ,  Xin Zhao ,  Marta Karczewicz

IPC分类号： H04N19/96 ,  H04N19/70 ,  H04N19/593 ,  H04N19/11 ,  H04N19/463 ,  H04N19/186 ,  H04N19/46

摘要： An example device includes a memory and processing circuitry in communication with the memory. The processing circuitry of a device is configured to form a most probable mode (MPM) candidate list for a chroma block of the video data stored to the memory, such that the MPM candidate list includes one or more derived modes (DMs) associated with a luma block of the video data associated with the chroma block, and a plurality of luma prediction modes that can be used for coding luminance components of the video data. The processing circuitry is further configured to select a mode from the MPM candidate list, and to code the chroma block according to the mode selected from the MPM candidate list.

公开(公告)号：US11412224B2

公开(公告)日：2022-08-09

申请号：US17197883

申请日：2021-03-10

申请人： QUALCOMM Incorporated

发明人： Xin Zhao ,  Vadim Seregin ,  Marta Karczewicz ,  Jianle Chen

IPC分类号： H04N19/159 ,  H04N19/593 ,  H04N19/124 ,  H04N19/61 ,  H04N19/176 ,  H04N19/12 ,  H04N19/103

摘要： Example techniques are described to illustrate multiple transform applied for Intra prediction residual. It may be used in the context of advanced video codecs, such as extensions of HEVC or the next generation of video coding standards. A video encoder and a video decoder may select transform subsets that each identify one or more candidate transforms. The video encoder and the video decoder may determine transforms from the selected transform subsets.

公开(公告)号：US20220215593A1

公开(公告)日：2022-07-07

申请号：US17566282

申请日：2021-12-30

申请人： QUALCOMM Incorporated

发明人： Hongtao Wang ,  Venkata Meher Satchit Anand Kotra ,  Jianle Chen ,  Marta Karczewicz

IPC分类号： G06T9/00 ,  H04N19/90 ,  H04N19/61 ,  H04N19/11

摘要： An example device for filtering decoded video data includes one or more processors configured to execute a neural network filtering unit to: receive data from one or more other units of the device, the data from the one or more other units of the device being different than data for a decoded picture of video data, and wherein to receive the data from the one or more other units of the device, the one or more processors are configured to execute the neural network filtering unit to receive boundary strength data from a deblocking unit of the device; determine one or more neural network models to be used to filter a portion of the decoded picture; and filter the portion of the decoded picture using the one or more neural network models and the data from the one or more other units of the device, including the boundary strength data.

公开(公告)号：US11356693B2

公开(公告)日：2022-06-07

申请号：US16582939

申请日：2019-09-25

申请人： QUALCOMM Incorporated

发明人： Wei-Jung Chien ,  Jianle Chen ,  Li Zhang ,  Marta Karczewicz

IPC分类号： H04N19/513 ,  H04N19/137 ,  H04N19/176 ,  H04N19/91

摘要： Coding a motion vector difference (MVD) during an inter-prediction process. Example techniques may include determining a particular coding and/or signaling method for an MVD from among two or more MVD coding and/or signaling techniques. A video coder (e.g., a video encoder and/or a video decoder) may determine a particular MVD coding and/or signaling technique based on characteristics of video data or coding methods, including MV precision, Picture Order Count (POC) difference, or any other already coded/decoded information of a block of video data.