公开(公告)号：US20220417516A1

公开(公告)日：2022-12-29

申请号：US17775019

申请日：2020-10-22

Applicant: InterDigital VC Holdings France, SAS

Inventor： Thierry Dumas ,  Franck Galpin ,  Philippe Bordes

IPC: H04N19/13 ,  H04N19/159 ,  H04N19/182 ,  H04N19/176

Abstract: There is provided intra predicting of an image block using at least one neural network from a context comprising pixel surrounding said image block. Said intra predicting also uses an information to distinguish the missing pixels from the available pixels in the context. There are also provided encoding/decoding methods and apparatus, a device, a non-transitory computer readable medium and a computer program product.

公开(公告)号：US20220408082A1

公开(公告)日：2022-12-22

申请号：US17774789

申请日：2020-11-02

Applicant: InterDigital VC Holdings France, SAS

Inventor： Philippe Bordes ,  Tangi Poirier ,  Antoine Robert ,  Fabrice Le Leannec ,  Franck Galpin

IPC: H04N19/105 ,  H04N19/132 ,  H04N19/176 ,  H04N19/70

Abstract: A method for decoding or encoding comprising: determining if an inter prediction mode called weighted prediction is enabled for a current block; and, if weighted prediction is enabled, modifying a part of a reconstruction process of said current block related to the weighted prediction and/or to at least another prediction tool of a first set of prediction tools, the first set comprising a triangle prediction mode, a geometrical prediction mode, a local illumination compensation mode, a combined intra inter prediction mode, and modes in which motion information used for motion compensation may be refined based on an optical flow model.

公开(公告)号：US20220353517A1

公开(公告)日：2022-11-03

申请号：US17621549

申请日：2020-06-18

Applicant: InterDigital VC Holdings France, SAS

Inventor： Philippe Bordes ,  Franck Galpin ,  Ya Chen ,  Fabrice Urban

IPC: H04N19/186 ,  H04N19/136 ,  H04N19/176 ,  H04N19/70 ,  H04N19/42

Abstract: A method and apparatus to improve compression efficiency in a video compression scheme enables flexible use of local illumination compensation. Such methods comprise individual local illumination compensation for components of a video block. Such methods also comprise flexible derivation methods for illumination compensation information. In one embodiment, local illumination compensation information can be inherited from other others, such as neighboring blocks.

公开(公告)号：US20230224454A1

公开(公告)日：2023-07-13

申请号：US18011184

申请日：2021-06-08

Applicant: InterDigital VC Holdings France, SAS

Inventor： Thierry Dumas ,  Franck Galpin ,  Philippe Bordes ,  Fabrice Le Leannec

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/593 ,  H04N19/12

CPC classification number: H04N19/105 ,  H04N19/176 ,  H04N19/593 ,  H04N19/12

Abstract: At least a method and an apparatus are presented for efficiently encoding or decoding video. For example, an intra prediction of an image block using at least one neural network from a context comprising pixels surrounding the image block is determined and an information relative to a transform method to apply for decoding the image block is also determined. The transform method is adapted to the neural network intra prediction mode of the block to encode or decode. The information relative to the transform method is inferred from the at least one neural network used in intra prediction of the image block at the encoding and either signaled or also inferred at the decoding.

公开(公告)号：US20230095387A1

公开(公告)日：2023-03-30

申请号：US17800002

申请日：2021-01-29

Applicant: InterDigital VC Holdings France

Inventor： Thierry Dumas ,  Franck Galpin ,  Philippe Bordes ,  Fabrice Le Leannec

IPC: H04N19/88 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46

Abstract: A video coding system is provided that performs intra prediction in a mode using a neural network for block of only a set of specific block sizes. The signaling of this mode is designed to be efficient in terms of rate-distortion under this constraint. Different transformations of the context of a block and the neural network prediction of this block are introduced in order to use one single neural network for predicting blocks of several sizes, as well as the corresponding signaling. The neural network-based prediction mode considers both luminance blocks and chrominance blocks. The video coding system comprises encoder and decoder apparatuses, encoding, decoding and signal generation methods and a signal carrying information corresponding to the described coding mode.