公开(公告)号：US11539947B2

公开(公告)日：2022-12-27

申请号：US16642562

申请日：2018-08-31

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Antoine Robert ,  Tangi Poirier ,  Simon Danten

IPC: H04N19/53 ,  H04N19/119 ,  H04N19/176 ,  H04N19/52 ,  H04N19/55

Abstract: Motion information for an internal sub-block of a larger block can be derived for use in encoding or decoding the video block or a coding unit by using the motion information for sub-blocks on the left or top edge of the coding block. The left column of edge sub-blocks and the top row of sub-blocks has motion information, such as motion vectors, derived using such techniques as template matching. The motion vectors of these edge sub-blocks are used in deriving the motion vectors of internal sub-blocks, which leads to better prediction and improved coding efficiency. In another embodiment, other motion information for internal sub-blocks is derived from corresponding information of the edge sub-blocks.

公开(公告)号：US10911759B2

公开(公告)日：2021-02-02

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 ,  H04N19/105 ,  H04N19/164 ,  H04N19/176 ,  H04N19/52 ,  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：US11563975B2

公开(公告)日：2023-01-24

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 ,  H04N19/105 ,  H04N19/117 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176 ,  H04N19/96 ,  H04N19/61 ,  G06T9/40 ,  H04N19/119 ,  H04N19/82

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.

公开(公告)号：US11553175B2

公开(公告)日：2023-01-10

申请号：US17373927

申请日：2021-07-13

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Fabien Racape ,  Franck Galpin ,  Antoine Robert

IPC: H04N11/02 ,  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：US11490112B2

公开(公告)日：2022-11-01

申请号：US17276819

申请日：2019-11-25

Applicant: InterDigital VC Holdings, Inc.

Inventor： Fabrice LeLeannec ,  Antoine Robert ,  Tangi Poirier

IPC: H04N19/172 ,  H04N19/176 ,  H04N19/517

Abstract: Different implementations are described; particularly implementations for video encoding and decoding using merge lists comprising history-based motion vector predictor candidates and averaged motion vector predictor candidates. The method comprises: determining for a current block of the picture one or more history-based motion vector predictor candidates using motion information of blocks preceding the current block; determining for the current block one or more averaged motion vector predictor candidates by averaging a pair of motion vector predictor candidates in a list of motion vector predictor candidates, wherein the motion vector predictor candidates in the list are formed using motion information of blocks spatially and/or temporally surrounding the current block; and inserting one or more of the averaged motion vector predictor candidates before one or more of the history-based motion vector predictor candidates in the list of motion vector predictor candidates.

公开(公告)号：US11245921B2

公开(公告)日：2022-02-08

申请号：US16622895

申请日：2018-06-25

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：US11089298B2

公开(公告)日：2021-08-10

申请号：US16617170

申请日：2018-05-30

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Fabien Racape ,  Franck Galpin ,  Antoine Robert

IPC: H04N11/02 ,  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 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：US20240007665A1

公开(公告)日：2024-01-04

申请号：US18368247

申请日：2023-09-14

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Franck Galpin ,  Antoine Robert ,  Fabrice Urban

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/184

CPC classification number: H04N19/52 ,  H04N19/184 ,  H04N19/176

Abstract: A method of predicting or inferring a piece of information for encoding or decoding uses a predictor from a spatial neighbor, or from a reference picture, instead of predicting or inferring the information, such as a flag for a current block, from a motion predictor block. This procedure can be used in several ways, or used in various motion vector prediction modes, such as Frame Rate Up Conversion or various variations of Advanced Motion Prediction. Other embodiments provide other methods and combinations to derive or infer motion information to increase coding efficiency.

公开(公告)号：US11805271B2

公开(公告)日：2023-10-31

申请号：US16652813

申请日：2018-10-04

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Franck Galpin ,  Antoine Robert ,  Fabrice Urban

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/184

CPC classification number: H04N19/52 ,  H04N19/176 ,  H04N19/184

Abstract: A method of predicting or inferring a piece of information for encoding or decoding uses a predictor from a spatial neighbor, or from a reference picture, instead of predicting or inferring the information, such as a flag for a current block, from a motion predictor block. This procedure can be used in several ways, or used in various motion vector prediction modes, such as Frame Rate Up Conversion or various variations of Advanced Motion Prediction. Other embodiments provide other methods and combinations to derive or infer motion information to increase coding efficiency.

公开(公告)号：US20220014778A1

公开(公告)日：2022-01-13

申请号：US17289076

申请日：2019-11-19

Applicant: InterDigital VC Holdings, Inc.

Inventor： Franck Galpin ,  Antoine Robert ,  Tangi Poirier

IPC: H04N19/52 ,  H04N19/176 ,  H04N19/139 ,  H04N19/107 ,  H04N19/132 ,  H04N19/70 ,  H04N19/593

Abstract: At least a method and an apparatus are provided for efficiently encoding or decoding video. For example, a plurality of different motion prediction modes are obtained for a current block. The current block is encoded or decoded based on a combination of the plurality of different motion prediction modes with corresponding weights, wherein the combination with the corresponding weights comprising at least two inter prediction modes, or an inter prediction mode and an intra prediction mode. Both triangle prediction and multi-hypothesis prediction are allowed to be indicated in one or more lists of possible motion vector candidates, such as, e.g., in advanced motion vector prediction (AMVP) mode.