公开(公告)号：US12200214B2

公开(公告)日：2025-01-14

申请号：US18523696

申请日：2023-11-29

Applicant: CANON KABUSHIKI KAISHA

Inventor： Jonathan Taquet ,  Naël Ouedraogo ,  Franck Denoual ,  Frédéric Maze

IPC: H04N19/119 ,  H04N19/169 ,  H04N19/174 ,  H04N19/46

Abstract: The present invention concerns a method of encoding video data comprising frames into a bitstream, frames being spatially divided into frame portions, the method comprising: encoding at least one frame portion into one or more first encoded units; wherein the method further comprises: signalling into said first encoded units, at least one frame portion identifier, a frame portion identifier identifying one encoded frame portion; and providing frame portion arrangement information comprising the frame portion identifier and spatial information about the frame portion.

公开(公告)号：US12184885B2

公开(公告)日：2024-12-31

申请号：US18517772

申请日：2023-11-22

Applicant: CANON KABUSHIKI KAISHA

Inventor： Guillaume Laroche ,  Christophe Gisquet ,  Patrice Onno ,  Jonathan Taquet

IPC: H04N19/513 ,  H04N19/13 ,  H04N19/44 ,  H04N19/70

Abstract: A method of encoding a motion information predictor index for an Affine Merge mode, comprising: generating a list of motion information predictor candidates; selecting one of the motion information predictor candidates in the list as an Affine Merge mode predictor; and generating a motion information predictor index for the selected motion information predictor candidate using CABAC coding, one or more bits of the motion information predictor index being bypass CABAC coded.

公开(公告)号：US12170790B2

公开(公告)日：2024-12-17

申请号：US18171181

申请日：2023-02-17

Applicant: CANON KABUSHIKI KAISHA

Inventor： Guillaume Laroche ,  Christophe Gisquet ,  Patrice Onno ,  Jonathan Taquet

IPC: H04N19/56 ,  H04N19/13 ,  H04N19/184

Abstract: A method of encoding a motion vector predictor index, in particular a Merge index, comprises generating a list of motion vector predictor candidates, in particular merge candidates. The list includes an ATMVP candidate. One of the motion vector predictor candidates in the list is selected. A motion vector predictor index for the selected motion vector predictor candidate is generated using CABAC coding. One or more bits of the motion vector predictor index are bypass CABAC coded. For example, only the first bit of the motion vector predictor index is CABAC coded using a single context.

公开(公告)号：US11979578B2

公开(公告)日：2024-05-07

申请号：US18163602

申请日：2023-02-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： Guillaume Laroche ,  Patrice Onno ,  Jonathan Taquet ,  Christophe Gisquet

IPC: H04N19/137 ,  H04N19/119 ,  H04N19/176 ,  H04N19/52

CPC classification number: H04N19/137 ,  H04N19/119 ,  H04N19/176 ,  H04N19/52

Abstract: The present disclosure concerns a method and a device for encoding or decoding video data. It concerns more particularly the encoding according to a particular encoding mode using a decoder side motion vector derivation mode referenced as frame-rate up conversion mode or FRUC mode. It concerns encoding and decoding improvement which reduce the need for memory accesses when using an encoding mode where the motion information is predicted using a decoder side motion vector derivation method.

公开(公告)号：US11876962B2

公开(公告)日：2024-01-16

申请号：US17045962

申请日：2019-03-25

Applicant: CANON KABUSHIKI KAISHA

Inventor： Jonathan Taquet ,  Naël Ouedraogo ,  Franck Denoual ,  Frédéric Maze

IPC: H04N19/119 ,  H04N19/174 ,  H04N19/169 ,  H04N19/46

CPC classification number: H04N19/119 ,  H04N19/174 ,  H04N19/188 ,  H04N19/46

Abstract: The present invention concerns a method of encoding video data comprising frames into a bitstream, frames being spatially divided into frame portions, the method comprising:



encoding at least one frame portion into one or more first encoded units;
wherein the method further comprises:
signalling into said first encoded units, at least one frame portion identifier, a frame portion identifier identifying one encoded frame portion; and
providing frame portion arrangement information comprising the frame portion identifier and spatial information about the frame portion.

公开(公告)号：US11595659B2

公开(公告)日：2023-02-28

申请号：US17524279

申请日：2021-11-11

Applicant: CANON KABUSHIKI KAISHA

Inventor： Guillaume Laroche ,  Patrice Onno ,  Jonathan Taquet ,  Christophe Gisquet

IPC: H04N19/137 ,  H04N19/119 ,  H04N19/176 ,  H04N19/52

Abstract: The present disclosure concerns a method and a device for encoding or decoding video data. It concerns more particularly the encoding according to a particular encoding mode using a decoder side motion vector derivation mode referenced as frame-rate up conversion mode or FRUC mode. It concerns encoding and decoding improvement which reduce the need for memory accesses when using an encoding mode where the motion information is predicted using a decoder side motion vector derivation method.

公开(公告)号：US11528502B2

公开(公告)日：2022-12-13

申请号：US17283168

申请日：2019-10-18

Applicant: CANON KABUSHIKI KAISHA

Inventor： Guillaume Laroche ,  Christophe Gisquet ,  Patrice Onno ,  Jonathan Taquet

IPC: H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/513 ,  H04N19/13 ,  H04N19/44 ,  H04N19/70

Abstract: A method of encoding a motion information predictor index for an Affine Merge mode, comprising: generating a list of motion information predictor candidates; selecting one of the motion information predictor candidates in the list as an Affine Merge mode predictor; and generating a motion information predictor index for the selected motion information predictor candidate using CABAC coding, one or more bits of the motion information predictor index being bypass CABAC coded.

公开(公告)号：US11245930B2

公开(公告)日：2022-02-08

申请号：US16650773

申请日：2018-09-27

Applicant: CANON KABUSHIKI KAISHA

Inventor： Christophe Gisquet ,  Jonathan Taquet ,  Patrice Onno ,  Guillaume Laroche

IPC: H04N19/82 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/86

Abstract: A method of filtering a block of pixels in an image, comprising obtaining a first clipping control parameter (tc) value based on a quantization parameter of the block; comparing a first value of a first pixel located on one side of an edge in said block and a second value of a second pixel located on the other side of the edge in said block with a predetermined threshold derived from the first clipping control parameter value; and determining whether to apply a strong filtering to the first pixel based on the result of the comparison, wherein: the strong filtering comprises filtering the first pixel value so that the filtered first pixel value differs from the first pixel value by no more than a range value based on the clipping control parameter (tc), the ration between two range values corresponding to successive values of bitdepths being strictly lower than 2.

公开(公告)号：US12170788B2

公开(公告)日：2024-12-17

申请号：US18517815

申请日：2023-11-22

Applicant: CANON KABUSHIKI KAISHA

Inventor： Guillaume Laroche ,  Christophe Gisquet ,  Patrice Onno ,  Jonathan Taquet

IPC: H04N19/513 ,  H04N19/13 ,  H04N19/44 ,  H04N19/70

Abstract: A method of encoding a motion information predictor index for an Affine Merge mode, comprising: generating a list of motion information predictor candidates; selecting one of the motion information predictor candidates in the list as an Affine Merge mode predictor; and generating a motion information predictor index for the selected motion information predictor candidate using CABAC coding, one or more bits of the motion information predictor index being bypass CABAC coded.

公开(公告)号：US12167029B2

公开(公告)日：2024-12-10

申请号：US18171249

申请日：2023-02-17

Applicant: CANON KABUSHIKI KAISHA

Inventor： Guillaume Laroche ,  Christophe Gisquet ,  Patrice Onno ,  Jonathan Taquet

IPC: H04N19/56 ,  H04N19/13 ,  H04N19/184

Abstract: A method of encoding a motion vector predictor index, in particular a Merge index, comprises generating a list of motion vector predictor candidates, in particular merge candidates. The list includes an ATMVP candidate. One of the motion vector predictor candidates in the list is selected. A motion vector predictor index for the selected motion vector predictor candidate is generated using CABAC coding. One or more bits of the motion vector predictor index are bypass CABAC coded. For example, only the first bit of the motion vector predictor index is CABAC coded using a single context.