公开(公告)号：US20210344905A1

公开(公告)日：2021-11-04

申请号：US17373927

申请日：2021-07-13

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Fabien RACAPE ,  Franck GALPIN ,  Antoine ROBERT

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/46 ,  H04N19/52

Abstract: Video signal coding and decoding functions can generate lists of potential candidates to use in coding and decoding, for example, predictors. Video signal coding component candidate undergo operations before potential inclusion in candidate lists. The candidates are checked after being modified by the operations to see if other equal candidates are already in the candidate list. If equal candidates are not in the list, the modified candidates are added to the candidate list. If equal candidates are already in the list, the modified candidates are not added to the list. Operations that can be performed comprise rounding and clipping.

公开(公告)号：US20190342557A1

公开(公告)日：2019-11-07

申请号：US16475345

申请日：2017-12-26

Applicant: InterDigital VC Holdings, Inc.

Inventor： Antoine ROBERT ,  Tangi POIRIER ,  Fabrice URBAN

IPC: H04N19/139 ,  H04N19/52 ,  H04N19/105 ,  H04N19/164 ,  H04N19/176 ,  H04N19/513

Abstract: A Frame Rate Up-Conversion (FRUC) derivation process, based on frame rate up-conversion techniques, is developed in the reference software JEM (Joint Exploration Model) by the Joint Video Exploration Team (JVET). In one embodiment, a modified FRUC derivation process improves the performance of the current FRUC tool is provided. For example, an initial list of motion vector candidates defined in the FRUC derivation process may be reordered, and/or one or more of the ordered motion vector candidates in the defined list may be removed to improve the efficiency of the process. The reordering and/or the removal may be based on, e.g., one or more of previously determined motion vector candidates of one or more previously decoded blocks. In addition, the adaptive reordering mode may be signaled by the encoder to the decoder as part of the modified FRUC derivation process.

公开(公告)号：US20240073439A1

公开(公告)日：2024-02-29

申请号：US18373645

申请日：2023-09-27

Applicant: InterDigital VC Holdings, Inc.

Inventor： Tangi POIRIER ,  Antoine ROBERT ,  Fabrice LELEANNEC

IPC: H04N19/52 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/56 ,  H04N19/567

CPC classification number: H04N19/52 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/56 ,  H04N19/567

Abstract: Different implementations are described, particularly implementations for determining a set of predictor candidates for affine merge coding mode from neighboring blocks for motion compensation of a picture block based on a motion model. The motion model, may be, e.g., an affine model in a merge mode or AMVP mode for a video content encoder or decoder. The motion model, may be, e.g., an affine model based on top-left/top-right control point motion vectors or an affine model based on top-left/botton-left control point motion vectors. Such affine model may be signaled by a flag. In an embodiment, predictor candidates are sorted in the set based on a criterion such as, e.g., a validity check or a vectors coherence cost. In an embodiment, a predictor candidate is selected from the set based on a motion model for each of the multiple predictor candidates, and may be based on a criterion such as, e.g., a rate distortion cost. The corresponding motion field is determined based on, e.g., one or more corresponding control point motion vectors for the block being encoded or decoded. The corresponding motion field of an embodiment identifies motion vectors used for prediction of sub-blocks of the block being encoded or decoded.

公开(公告)号：US20230097304A1

公开(公告)日：2023-03-30

申请号：US18077342

申请日：2022-12-08

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Antoine ROBERT ,  Fabrice LELEANNEC ,  Franck GALPIN

IPC: H04N19/513 ,  H04N19/70 ,  H04N19/176 ,  H04N19/96

Abstract: A video encoder or decoder processes portions of video with less delay when its processes are parallelized and avoids delays caused by dependence on the completion of prior processes. In one embodiment, a motion vector predictor from a neighboring block of video is used in a subsequent later block of video before it is finished being refined for use in the neighboring block. In another embodiment, information from a neighboring block is confined to include blocks in the same coding tree unit. In another embodiment, a motion vector predictor is checked to see whether it is already in a list of candidates before adding it to the list to expedite the process.

公开(公告)号：US20220150501A1

公开(公告)日：2022-05-12

申请号：US17438040

申请日：2020-03-06

Applicant: InterDigital VC Holdings, Inc.

Inventor： Fabrice LELEANNEC ,  Antoine ROBERT ,  Ya CHEN

IPC: H04N19/13 ,  H04N19/70 ,  H04N19/172 ,  H04N19/176 ,  H04N19/124 ,  H04N19/18 ,  H04N19/132 ,  H04N19/60 ,  H04N19/157

Abstract: In at least one embodiment, a method and apparatus for encoding/decoding a video is based on a CABAC coding of bins where a high-level constraint on the maximum usage of regular CABAC coding of bins is enforced. In other words, a budget of regular coded bins is allocated over a picture area that is larger than a coding group, thus covering a plurality of coding groups, and which is determined from an average allowed number of regular bins per unit of area.

公开(公告)号：US20220116654A1

公开(公告)日：2022-04-14

申请号：US17557179

申请日：2021-12-21

Applicant: InterDigital VC Holdings, Inc.

Inventor： Antoine ROBERT ,  Fabrice LELEANNEC ,  Tangi POIRIER

IPC: H04N19/513 ,  H04N19/105 ,  H04N19/139 ,  H04N19/176 ,  H04N19/52

Abstract: Different implementations are described, particularly implementations for selecting a predictor candidate from a set of multiple predictor candidates for motion compensation of a picture block based on a motion model. The motion model, may be, e.g., an affine model in a merge mode for a video content encoder or decoder. In an embodiment, a predictor candidate is selected from the set based on a motion model for each of the multiple predictor candidates, and may be based on a criterion such as, e.g., a rate distortion cost. The corresponding motion field is determined based on, e.g., one or more corresponding control point motion vectors for the block being encoded or decoded. The corresponding motion field of an embodiment identifies motion vectors used for prediction of sub-blocks of the block being encoded or decoded.

公开(公告)号：US20200288163A1

公开(公告)日：2020-09-10

申请号：US16753045

申请日：2018-10-04

Applicant: InterDigital VC Holdings, Inc.

Inventor： Tangi POIRIER ,  Antoine ROBERT ,  Fabrice LELEANNEC

IPC: H04N19/52 ,  H04N19/147 ,  H04N19/176 ,  H04N19/567 ,  H04N19/159 ,  H04N19/56

Abstract: Different implementations are described for determining a set of predictor candidates for affine merge coding mode from neighboring blocks for motion compensation of a picture block based on a motion model for a video content encoder or decoder.

公开(公告)号：US20250159141A1

公开(公告)日：2025-05-15

申请号：US19026941

申请日：2025-01-17

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Fabien RACAPE ,  Franck GALPIN ,  Antoine ROBERT

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/46 ,  H04N19/52

Abstract: Video signal coding and decoding functions can generate lists of potential candidates to use in coding and decoding, for example, predictors. Video signal coding component candidates undergo operations before potential inclusion in candidate lists. The candidates are checked after being modified by the operations to see if other equal candidates are already in the candidate list. If equal candidates are not in the list, the modified candidates are added to the candidate list. If equal candidates are already in the list, the modified candidates are not added to the list. Operations that can be performed comprise rounding and clipping.

公开(公告)号：US20230131933A1

公开(公告)日：2023-04-27

申请号：US18074769

申请日：2022-12-05

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Fabien RACAPE ,  Franck GALPIN ,  Antoine ROBERT

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/46 ,  H04N19/52

Abstract: Video signal coding and decoding functions can generate lists of potential candidates to use in coding and decoding, for example, predictors. Video signal coding component candidate undergo operations before potential inclusion in candidate lists. The candidates are checked after being modified by the operations to see if other equal candidates are already in the candidate list. If equal candidates are not in the list, the modified candidates are added to the candidate list. If equal candidates are already in the list, the modified candidates are not added to the list. Operations that can be performed comprise rounding and clipping.

公开(公告)号：US20210360285A1

公开(公告)日：2021-11-18

申请号：US17284678

申请日：2019-12-16

Applicant: InterDigital VC Holdings, Inc.

Inventor： Fabrice URBAN ,  Antoine ROBERT ,  Franck GALPIN

IPC: H04N19/583 ,  H04N19/132 ,  H04N19/117 ,  H04N19/176 ,  H04N19/137 ,  H04N19/105

Abstract: At least a method and an apparatus are presented for efficiently encoding or decoding video. For example, a prediction block for a current block is obtained. A reconstructed neighboring block of the prediction block is obtained. Filtering is performed on a boundary between the prediction block and the reconstructed neighboring block. At the encoder side, the prediction residual is obtained as the difference between the filtered prediction block and the current block, and then encoded. At the decoder side, the prediction residual is added to the filtered prediction block to reconstruct the current block.