公开(公告)号：WO2020163209A1

公开(公告)日：2020-08-13

申请号：PCT/US2020/016345

申请日：2020-02-03

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： BORDES, Philippe ,  LELEANNEC, Fabrice ,  POIRIER, Tangi ,  URBAN, Fabrice

IPC: H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/82 ,  H04N19/86

Abstract: A method for reconstructing a picture block is disclosed, wherein the block is predicted using local illumination compensation. The parameters of local illumination compensation are determined according to a selection of reconstructed samples located to the left and above of the current block. In the case where some of them are unavailable, they may be replaced using different techniques.

公开(公告)号：WO2020150080A1

公开(公告)日：2020-07-23

申请号：PCT/US2020/013026

申请日：2020-01-10

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： GALPIN, Franck ,  BORDES, Philippe ,  FRANCOIS, Edouard

IPC: H04N19/573 ,  H04N19/577

Abstract: Different implementations are described, particularly implementations for video encoding and decoding are presented. According to an implementation, in a method for encoding or decoding a part of an image, at least an equation of the bi-directional optical flow is modified for unequal weights in a weighted prediction of the part of the image. According to non-limiting examples, modifying the bi-directional optical flow equation comprises bit depth shifting the unequal weights used in the weighted prediction, quantifying the unequal weighs used in the weighted prediction or deriving modified weighs to apply to predictions of the part of the image from the unequal weights used in weighted prediction.

公开(公告)号：WO2020112451A1

公开(公告)日：2020-06-04

申请号：PCT/US2019/062346

申请日：2019-11-20

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： ROBERT, Antoine ,  GALPIN, Franck ,  BORDES, Philippe

IPC: H04N19/52 ,  H04N19/513

Abstract: At least a method and an apparatus are provided for efficiently encoding or decoding video. For example, a first set of affine motion model candidates is obtained for a current block. A second set of affine motion model candidates is obtained using a combination of one or more of the affine motion model candidates in the first set. The current block is then encoded or decoded based on one or more of the affine motion model candidates in the first set and the second set.

公开(公告)号：WO2020106564A3

公开(公告)日：2020-05-28

申请号：PCT/US2019/061658

申请日：2019-11-15

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： BORDES, Philippe ,  POIRIER, Tangi ,  CHEN, Ya

IPC: H04N19/176 ,  H04N19/103 ,  H04N19/157

Abstract: A decoding method is disclosed. It comprises: - decoding parameters for a current block; - disabling a first coding tool for said current block in the case where one or more of the following conditions is verified: a second coding tool is used for said current block and a given condition on the decoded parameters is verified; - enabling for said current block said first coding tool otherwise; and - decoding said current block using said first coding tool if said first coding tool is enabled.

公开(公告)号：WO2020061302A1

公开(公告)日：2020-03-26

申请号：PCT/US2019/051917

申请日：2019-09-19

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： YA, Chen ,  POIRIER, Tangi ,  BORDES, Philippe ,  LELEANNEC, Fabrice ,  GALPIN, Franck

IPC: H04N19/70 ,  H04N19/51 ,  H04N19/463 ,  H04N19/82

Abstract: A decoding method is presented. An illumination compensation parameter is first determined for a current block of a picture. The illumination compensation parameter is determined from one or more illumination compensation parameters or from one or more reconstructed samples of at least one spatially neighbor block only in the case where said at least one spatially neighbor block belongs to the same local illumination compensation group as the current block, called current local illumination compensation group. Finally, the current block is reconstructed using the determined illumination compensation parameter.

公开(公告)号：WO2020061147A1

公开(公告)日：2020-03-26

申请号：PCT/US2019/051653

申请日：2019-09-18

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： LELEANNEC, Fabrice ,  POIRIER, Tangi ,  BORDES, Philippe

IPC: H04N19/109 ,  H04N19/139 ,  H04N19/182 ,  H04N19/577

Abstract: Different implementations are described, particularly implementations for video encoding and decoding using motion compensation with bi-prediction are presented. The encoding method comprises for a picture, obtaining a first predictor for a block of the picture using a first reference picture; obtaining a second predictor for said block of the picture using a second reference picture; using the first predictor and the second predictor for forming a third predictor for the block in bi-prediction inter prediction, wherein the third predictor is obtained as a weighted average of the first predictor and the second predictor; and wherein a weight used in the weighed prediction depend on the position of the sample in the block. Others embodiments are presented for implementing block triangle partition prediction, for implementing block partition prediction using multiple patterns and for corresponding motion compensation in decoding method.

公开(公告)号：WO2019209913A1

公开(公告)日：2019-10-31

申请号：PCT/US2019/028859

申请日：2019-04-24

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： GALPIN, Franck ,  RACAPE, Fabien ,  NASER, Karam ,  BORDES, Philippe

IPC: H04N19/91 ,  H04N19/13 ,  H04N19/11 ,  H04N19/176 ,  G06T9/00

Abstract: Methods and apparatuses for video coding and decoding are provided. The method of video encoding includes accessing a bin of a syntax element associated with a block in a picture of a video, determining a context for the bin of the syntax element associated with the syntax element and entropy encoding the bin of the syntax element based on the determined context wherein either the bin of the syntax element is based on the relevance of a prediction by a neural network of the syntax element or the probability associated to the context is determined by a neural network. A bitstream formatted to include encoded data, a computer-readable storage medium and a computer-readable program product are also described.

公开(公告)号：WO2019147910A1

公开(公告)日：2019-08-01

申请号：PCT/US2019/015104

申请日：2019-01-25

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： GALPIN, Franck ,  POIRIER, Tangi ,  BORDES, Philippe ,  LELEANNEC, Fabrice ,  RACAPE, Fabien

IPC: H04N19/105 ,  H04N19/593 ,  H04N19/186 ,  H04N19/157

CPC classification number: H04N19/105 ,  H04N19/157 ,  H04N19/186 ,  H04N19/593

Abstract: Different implementations are described, particularly implementations for video encoding and decoding based on a linear model responsive to neighboring samples are presented. Accordingly, for a block being encoded or decoded in a picture, at least one spatial neighboring template is determined and at least one linear model parameter is determined based on reconstructed samples of the at least one spatial neighboring template. In a first embodiment, the number N of reconstructed samples corresponds to N = 2k with k chosen so that n is the maximum integer smaller than the sum of the block width and block height. In a second embodiment, an offset for the relative position of a first sample in the template among samples of a left, respectively top, neighboring line of the block is determined. In a third embodiment, the number of reconstructed samples is set to a higher number in the larger dimension of the block.

公开(公告)号：WO2018219663A1

公开(公告)日：2018-12-06

申请号：PCT/EP2018/062876

申请日：2018-05-17

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： BORDES, Philippe ,  CHEN, Ya ,  RACAPE, Fabien ,  GALPIN, Franck

IPC: H04N19/70 ,  H04N19/147 ,  H04N19/82

Abstract: A decoding method for decoding blocks of a picture part is disclosed that comprises : - decoding a plurality of candidate sets of filter parameters from a bitstream; - decoding for a current block of said picture an index identifying one of the candidate sets of filter parameters from said bitstream; - decoding said current block from said bitstream; and - filtering said decoded current block with the candidate set of filter parameters identified by said decoded index.

公开(公告)号：WO2020086448A1

公开(公告)日：2020-04-30

申请号：PCT/US2019/057186

申请日：2019-10-21

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： CHEN, Ya ,  DE LAGRANGE, Philippe ,  BORDES, Philippe

IPC: H04N19/593 ,  H04N19/463 ,  H04N19/124 ,  H04N19/96

Abstract: To encode or decode a quantization parameter (QP) for a current block, a QP predictor may be generated, based on one or more quantization parameters of neighboring blocks of the current block. To select neighboring blocks, a position may be selected within the current block. A left (top) neighboring block, which includes a sample that has the same vertical (horizontal) location as the selected position can then be selected. A center position can be used, or multiple positions can be used. The QP predictor for the block may be formed as the left QP, the top QP, or an average of the left and top QPs. The average may be a weighted average, wherein the weights are based on the length of shared borders or surface areas of the neighboring blocks used for predicting the QPs.