公开(公告)号：US20240357079A1

公开(公告)日：2024-10-24

申请号：US18633182

申请日：2024-04-11

申请人： QUALCOMM Incorporated

发明人： Jian-Liang Lin ,  Po-Han Lin ,  Vadim Seregin ,  Marta Karczewicz ,  Yao-Jen Chang ,  Zhi Zhang

IPC分类号： H04N19/105 ,  H04N19/174 ,  H04N19/176

CPC分类号： H04N19/105 ,  H04N19/174 ,  H04N19/176

摘要： A method of encoding or decoding video data includes selecting a group of blocks based on probing samples determined from pixels that are proximate to the blocks in the group of blocks and current probing samples determined from pixels that are proximate to a current block; fusing the blocks in the group of blocks to generate a prediction signal; and encoding or decoding the current block based on the prediction signal.

公开(公告)号：US20240333911A1

公开(公告)日：2024-10-03

申请号：US18617841

申请日：2024-03-27

申请人： QUALCOMM Incorporated

发明人： Po-Han Lin ,  Jian-Liang Lin ,  Vadim Seregin ,  Marta Karczewicz

IPC分类号： H04N19/105 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70 ,  H04N19/80

CPC分类号： H04N19/105 ,  H04N19/176 ,  H04N19/52 ,  H04N19/70 ,  H04N19/80

摘要： A method of encoding or decoding video data, the method comprising: applying a sub-pel precision mode to generate a prediction block for a current block of the video data, wherein a syntax element indicates that the sub-pel precision mode is applied to the current block and applying the sub-pel precision mode comprises: applying an interpolation filter to samples of a reference region to generate an array of samples at full-pel and sub-pel precision; and identifying, within the array, a reference template of the prediction block, wherein the reference template of the prediction block is a best match for a template of the current block within the array, wherein a template pattern defines a shape of the reference template of the prediction block and the template of the current block; and encoding or decoding the current block using the prediction block for the current block.

公开(公告)号：US12069246B2

公开(公告)日：2024-08-20

申请号：US18066602

申请日：2022-12-15

申请人： QUALCOMM Incorporated

发明人： Jingya Li ,  Vadim Seregin ,  Marta Karczewicz

IPC分类号： H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

CPC分类号： H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

摘要： An method of decoding video data includes deriving, for a current block of video data and using decoder side intra mode derivation (DIMD), a list of intra modes using reconstructed samples of neighboring blocks; constructing, for the current block, a most probable mode (MPM) list, wherein constructing the MPM list comprises inserting, into the MPM list, at least one intra mode from the derived list of intra modes; and predicting, using a candidate selected from the constructed MPM list, the current block.

公开(公告)号：US12069244B2

公开(公告)日：2024-08-20

申请号：US17932595

申请日：2022-09-15

申请人： QUALCOMM Incorporated

发明人： Han Huang ,  Vadim Seregin ,  Chun-Chi Chen ,  Marta Karczewicz

IPC分类号： H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176

CPC分类号： H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176

摘要： A method of decoding video data includes determining a plurality of hypotheses of a current block based on a plurality of motion vectors. Each of the plurality of motion vectors is associated with one of the plurality of hypotheses, and each of the plurality of hypotheses is based on a set of samples in a reference picture having a motion vector that identifies a top-left sample of the set of samples. The method includes determining one or more neighboring samples in the same picture as the current block, for each of the plurality of hypotheses, determining respective correlation values between at least one sample of a respective hypothesis and at least one sample of the one or more neighboring samples, determining the motion vector for the current block based on the determined respective correlation values, and reconstructing the current block based on the determined motion vector.

公开(公告)号：US12058381B2

公开(公告)日：2024-08-06

申请号：US17806192

申请日：2022-06-09

申请人： QUALCOMM Incorporated

发明人： Venkata Meher Satchit Anand Kotra ,  Nan Hu ,  Vadim Seregin ,  Marta Karczewicz

IPC分类号： H04N19/82 ,  H04N19/117 ,  H04N19/132 ,  H04N19/85 ,  H04N19/423

CPC分类号： H04N19/82 ,  H04N19/117 ,  H04N19/132 ,  H04N19/85 ,  H04N19/423

摘要： A video encoder or video decoder are configured to reconstruct the video data to generate reconstructed video data. The video encoder or video decoder may further perform a plurality of loop filter operations on the reconstructed video data in parallel, wherein the plurality of loop filter operations includes a first filter operation that is not a bilateral filter operation or a sample adaptive offset (SAO) filter operation, and perform a joint clipping operation on a first output of the first filter and a second output of a second loop filter operation of the plurality of loop filter operations. The first filter operation may be a cross-component sample adaptive offset (CCSAO) filter operation.

公开(公告)号：US20240244197A1

公开(公告)日：2024-07-18

申请号：US18408928

申请日：2024-01-10

申请人： QUALCOMM Incorporated

发明人： Chun-Chi Chen ,  Bappaditya Ray ,  Hongtao Wang ,  Vadim Seregin ,  Marta Karczewicz ,  Han Huang

IPC分类号： H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/80

CPC分类号： H04N19/117 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70 ,  H04N19/80

摘要： A method of encoding or decoding video data includes determining a block vector for a current block of a current picture, the block vector identifying a fractional-pel position between reference samples in the current picture and having a fractional-pel resolution that is less than integer-pel resolution; generating a prediction block from reference samples in the current picture based on the fractional-pel position; and encoding or decoding the current block based on the prediction block.

公开(公告)号：US20240223769A1

公开(公告)日：2024-07-04

申请号：US18540046

申请日：2023-12-14

申请人： QUALCOMM Incorporated

发明人： Zhi Zhang ,  Pavel Nikitin ,  Han Huang ,  Vadim Seregin ,  Marta Karczewicz

IPC分类号： H04N19/137 ,  H04N19/105 ,  H04N19/176

CPC分类号： H04N19/137 ,  H04N19/105 ,  H04N19/176

摘要： A method of decoding video data includes determining a vector predictor for a current block; determining a first set of vector difference candidates based on a first pel-interval, the first pel-interval defining a first distance between consecutive vector difference candidates in the first set of vector difference candidates starting with the vector predictor; determining a second set of vector difference candidates based on the first set of vector difference candidates and a second pel-interval, the second pel-interval defining a second distance between consecutive vector difference candidates in the second set of vector difference candidates; constructing a vector difference candidate list based on the second set of vector difference candidates; determining a vector for the current block based on the vector predictor and a vector difference from the vector difference candidate list; and reconstructing the current block based on the vector for the current block.

公开(公告)号：US12003731B2

公开(公告)日：2024-06-04

申请号：US17933318

申请日：2022-09-19

申请人： QUALCOMM Incorporated

发明人： Bappaditya Ray ,  Vadim Seregin ,  Marta Karczewicz

IPC分类号： H04N19/136 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60

CPC分类号： H04N19/136 ,  H04N19/176 ,  H04N19/18 ,  H04N19/60

摘要： An example device for decoding video data includes a memory configured to store video data; and one or more processors implemented in circuitry and configured to: determine a number of multiple transform selection (MTS) candidates for a current block of video data, the number being greater than zero and different than four, the MTS candidates being MTS candidates other than a DCT2 candidate; determine one of the MTS candidates of the number of MTS candidates for the current block; inverse transform a transform block for the current block using the determined one of the MTS candidates to produce a residual block; and decode the current block using the residual block.

公开(公告)号：US20240179342A1

公开(公告)日：2024-05-30

申请号：US18507544

申请日：2023-11-13

申请人： QUALCOMM Incorporated

发明人： Yan Zhang ,  Han Huang ,  Vadim Seregin ,  Marta Karczewicz

IPC分类号： H04N19/52 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/70

CPC分类号： H04N19/52 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/70

摘要： A video coder is configured to receive a first block of video data to be coded using adaptive affine decoder side motion vector refinement (DMVR). The video coder may determine to set a first motion vector difference (MVD) for a first reference picture list to zero, and then refine control point motion vectors (CPMVs) associated with a second reference picture list to generate refined CPMVs. The video coder may then code the first block of video data using the refined CPMVs.

公开(公告)号：US20240129481A1

公开(公告)日：2024-04-18

申请号：US18471131

申请日：2023-09-20

申请人： QUALCOMM Incorporated

发明人： Han Huang ,  Vadim Seregin ,  Marta Karczewicz

IPC分类号： H04N19/139 ,  H04N19/176

CPC分类号： H04N19/139 ,  H04N19/176

摘要： A video coder may be configured to partition a coding block into subblocks, and generate initial subblock motion vectors for a plurality of the subblocks. The video coder may further refine the initial subblock motion vectors for the plurality of the subblocks using decoder side motion vector refinement to produce refined subblock motion vectors for the plurality of the subblocks, and perform a linear regression on the refined subblock motion vectors and coordinates of the plurality of the subblocks to derive an affine motion model. The video coder may then code the coding block using the derived affine motion model.