公开(公告)号：WO2020092535A1

公开(公告)日：2020-05-07

申请号：PCT/US2019/058828

申请日：2019-10-30

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： URBAN, Fabrice ,  RACAPE, Fabien ,  RATH, Gagan

IPC: H04N19/105 ,  H04N19/11 ,  H04N19/176 ,  H04N19/593 ,  H04N19/91

Abstract: At least a method and an apparatus are provided for efficiently encoding or decoding video. For example, multiple reference lines for intra prediction of a current block are obtained, wherein the multiple reference lines include at least one reference line that is immediately adjacent to the current block and at least one reference line that is not immediately adjacent to the current block. A number of intra prediction candidate modes are obtained respectively for each of the multiple reference lines. The current block is encoded based on the respective number of candidate modes for each of the multiple reference lines.

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：WO2019204083A1

公开(公告)日：2019-10-24

申请号：PCT/US2019/026537

申请日：2019-04-09

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： LELEANNEC, Fabrice ,  RACAPE, Fabien ,  FRANCOIS, Edouard

IPC: H04N19/124 ,  H04N19/136 ,  H04N19/14 ,  H04N19/167 ,  H04N19/176 ,  H04N19/463

Abstract: Apparatus and methods for encoding and decoding video data having improved quantization parameter prediction are presented and can include using a combination of quantization parameter prediction values obtained from respective ones of a plurality of quantization parameter prediction methods to encode or decode the video data.

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：WO2021126769A1

公开(公告)日：2021-06-24

申请号：PCT/US2020/064862

申请日：2020-12-14

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： GALPIN, Franck ,  RACAPE, Fabien ,  BEGAINT, Jean ,  DUMAS, Thierry

IPC: H04N19/90 ,  H04N19/176 ,  G06N3/04 ,  G06N3/0454

Abstract: In one implementation, a picture is partitioned into multiple blocks, with uniform or different block sizes. Each block is compressed by an auto-encoder, which may comprise a deep neural network and entropy encoder. The compressed block may be reconstructed or decoded with another deep neural network. Quantization may be used in the encoder side, and de-quantization at the decoder side. When the block is encoded, neighboring blocks may be used as causal information. Latent information can also be used as input to a layer at the encoder or decoder. Vertical and horizontal position information can further be used to encode and decode the image block. A secondary network can be applied to the position information before it is used as input to a layer of the neural network at the encoder or decoder. To reduce blocking artifact, the block may be extended before being input to the encoder.

公开(公告)号：WO2020167763A1

公开(公告)日：2020-08-20

申请号：PCT/US2020/017657

申请日：2020-02-11

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： RACAPE, Fabien ,  RATH, Gagan ,  URBAN, Fabrice

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/147 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182

Abstract: A method and apparatus for performing intra prediction for encoding or decoding adds multiple prediction modes to those of prior intra prediction schemes. A horizontal mode, a vertical mode, and a diagonal mode are added. Reference pixels for each of the added modes can come from multiple pixel positions away from a block to be encoded or decoded. Reference pixels to the left and above a block are reconstructed from those already coded. Reference pixels from right of, and below, a block are estimated or extrapolated and can be based on other pixels around the block. An index can be sent in a bitstream indicating which prediction was used.

公开(公告)号：WO2020018207A1

公开(公告)日：2020-01-23

申请号：PCT/US2019/037148

申请日：2019-06-14

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： RACAPE, Fabien ,  RATH, Gagan ,  FRANCOIS, Edouard ,  URBAN, Fabrice

IPC: H04N19/11 ,  H04N19/105 ,  H04N19/119 ,  H04N19/96 ,  H04N19/593

Abstract: Methods and apparatus for performing intra prediction in an encoder or a decoder for non-square blocks enable a combination of reference samples from a row above the non-square block and a row to the left of the non-square block to be used for the prediction. In one embodiment, a weighted combination of reference samples are used. In another embodiment, the angles of prediction are extended in the longer direction of the non-square block, such that less angles of prediction are used in the shorter direction.

公开(公告)号：WO2019212661A1

公开(公告)日：2019-11-07

申请号：PCT/US2019/024229

申请日：2019-03-27

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： RACAPE, Fabien ,  GALPIN, Franck ,  ROBERT, Antoine

IPC: H04N19/126 ,  H04N19/182 ,  H04N19/167 ,  H04N19/597

Abstract: A method and an apparatus for coding an omnidirectional video and corresponding method and apparatus for decoding an omnidirectional video are disclosed. According to the present disclosure, for at least one block of a picture of said omnidirectional video, a value of each pixel of said block is scaled (32) according to a spatial position of the pixel in said picture, and said block is encoded (33), wherein said scaling is different for at least 2 pixels within said block.

公开(公告)号：WO2019156757A1

公开(公告)日：2019-08-15

申请号：PCT/US2019/012269

申请日：2019-01-04

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： GALPIN, Franck ,  RACAPE, Fabien ,  DE LAGRANGE, Philippe

IPC: H04N19/117 ,  H04N19/157 ,  H04N19/176 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/157 ,  H04N19/176 ,  H04N19/82

Abstract: A method for decoding a picture block is disclosed. To this aim, a picture part is decoded (S220). Then, the decoded block is first filtered (S230) with a deblocking filter. At least one sample of the decoded block is classified (S240) into one current class of N classes of an adaptive loop filter, N being an integer. Finally, the sample of the decoded block is filtered (S250) with an adaptive loop filter associated with the current class. Advantageously, the filtering with an adaptive loop filter is weighted responsive to the current class and further to information derived from the filtering with a deblocking filter.