公开(公告)号：US11997291B2

公开(公告)日：2024-05-28

申请号：US17357734

申请日：2021-06-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Fnu Hendry ,  Maxim Borisovitch Sychev

IPC: H04N19/174 ,  H04N19/119 ,  H04N19/172 ,  H04N19/176 ,  H04N19/30 ,  H04N19/44 ,  H04N19/66 ,  H04N19/70

CPC classification number: H04N19/174 ,  H04N19/119 ,  H04N19/172 ,  H04N19/176 ,  H04N19/30 ,  H04N19/44 ,  H04N19/66 ,  H04N19/70

Abstract: A video coding mechanism is disclosed. The mechanism includes partitioning a picture into a plurality of first level tiles. A subset of the first level tiles is partitioned into a plurality of second level tiles. The first level tiles and the second level tiles are assigned into one or more tile groups such that all tiles in an assigned tile group containing the second level tiles are constrained to cover a rectangular region of the picture. The first level tiles and the second level tiles are encoded into a bitstream. The bitstream is stored for communication toward a decoder.

公开(公告)号：US11917182B2

公开(公告)日：2024-02-27

申请号：US17562760

申请日：2021-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Jianle Chen ,  Fnu Hendry

IPC: H04N7/12 ,  H04N19/46 ,  H04N19/102 ,  H04N19/172 ,  H04N19/597

CPC classification number: H04N19/46 ,  H04N19/102 ,  H04N19/172 ,  H04N19/597

Abstract: A video coding mechanism is disclosed. The mechanism includes encoding a sequence of point cloud compression (PCC) components into a bitstream. A buffering period supplemental enhancement information (SEI) message is also encoded into the bitstream. A hypothetical reference decoder (HRD) is initialized at a coded atlas access unit (AU) associated with the buffering period SEI message. A HRD conformance check of the bitstream is performed starting at the coded atlas AU. The bitstream is stored for communication toward a decoder.

公开(公告)号：US11917134B2

公开(公告)日：2024-02-27

申请号：US17470798

申请日：2021-09-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fnu Hendry ,  Ye-Kui Wang ,  Jianle Chen

IPC: H04N19/107 ,  H04N19/162 ,  H04N19/172 ,  H04N19/46 ,  H04N19/169 ,  H04N19/30 ,  H04N19/14 ,  H04N19/174

CPC classification number: H04N19/107 ,  H04N19/14 ,  H04N19/162 ,  H04N19/172 ,  H04N19/174 ,  H04N19/188 ,  H04N19/1883 ,  H04N19/30 ,  H04N19/46

Abstract: A method of decoding a coded video bitstream implemented by a video decoder is provided. The method includes the video decoder determining whether a value for a first flag is provided by an external input; setting a first flag equal to the value provided by the external input and a second flag equal to the value of the first flag to prevent a gradual decoding refresh (GDR) picture from being output when the value for the first flag is provided by the external input; decoding the GDR picture; and storing the GDR picture in a decoded picture buffer (DPB).

公开(公告)号：US11778205B2

公开(公告)日：2023-10-03

申请号：US17357724

申请日：2021-06-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Fnu Hendry ,  Maxim Borisovitch Sychev

IPC: H04N19/174 ,  H04N19/119 ,  H04N19/172 ,  H04N19/30 ,  H04N19/70 ,  H04N19/44 ,  H04N19/66 ,  H04N19/176

CPC classification number: H04N19/174 ,  H04N19/119 ,  H04N19/172 ,  H04N19/30 ,  H04N19/44 ,  H04N19/66 ,  H04N19/70 ,  H04N19/176

Abstract: A video coding mechanism is disclosed. The mechanism includes partitioning a picture into a plurality of first level tiles. A subset of the first level tiles is partitioned into a plurality of second level tiles. Each second level tile contains a single rectangular slice of picture data. The first level tiles and the second level tiles are encoded into a bitstream. The bitstream is stored for communication toward a decoder.

公开(公告)号：US11758123B2

公开(公告)日：2023-09-12

申请号：US17176582

申请日：2021-02-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/70 ,  H04N19/105 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/44 ,  H04N19/58 ,  H04N19/46 ,  H04N21/44 ,  G06T1/60

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/58 ,  H04N19/70 ,  H04N21/44004 ,  G06T1/60

Abstract: A method of decoding a coded video bitstream is provided. The method includes obtaining a first reference picture list structure and a second reference picture list structure represented in the coded video bitstream; deriving, based on the first reference picture list structure and the second reference picture list structure, a first reference picture list of a current slice and a second reference picture list of the current slice, wherein the current slice comprises an intra (I) slice or a uni-predictive (P) slice; and obtaining at least one reconstructed block of the current slice following derivation of the first reference picture list and the second reference picture list.

公开(公告)号：US11729401B2

公开(公告)日：2023-08-15

申请号：US17670708

申请日：2022-02-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/463

CPC classification number: H04N19/172 ,  H04N19/174 ,  H04N19/184 ,  H04N19/463

Abstract: An encoding device configured to encode a flag, that indicates whether tile information for a picture having a tile group is present in a parameter set of a video bitstream or in a slice header of the video bitstream, into the video bitstream, encode the tile information in the parameter set when the flag indicates the tile information for the picture is encoded in the parameter set, and encode the tile information in the slice header when the flag indicates the tile information for the picture is encoded in the slice header.

公开(公告)号：US20210211663A1

公开(公告)日：2021-07-08

申请号：US17199018

申请日：2021-03-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Fnu Hendry ,  Jianle Chen

IPC: H04N19/119 ,  H04N19/46 ,  H04N19/176 ,  H04N19/174

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream including image data divided into one or more slices. The one or more slices are further divided into one or more tiles. The mechanism further includes determining that a first slice contains a single tile based on a first flag. The mechanism further includes decoding the first slice to generate a reconstructed image.

公开(公告)号：US12294699B2

公开(公告)日：2025-05-06

申请号：US18519875

申请日：2023-11-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Jianle Chen ,  Fnu Hendry

IPC: H04N19/117 ,  H04N19/105 ,  H04N19/119 ,  H04N19/132 ,  H04N19/137 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46 ,  H04N19/52 ,  H04N19/593 ,  H04N19/70 ,  H04N19/82 ,  H04N19/86 ,  H04N19/96

Abstract: A video coding mechanism includes receiving a bitstream comprising a current picture including a sub-picture coded according to inter-prediction. Coded blocks contain candidate motion vectors for a current block of the sub-picture. The coded blocks include a collocated block from a different picture. A candidate list of candidate motion vectors for the current block are derived by excluding collocated motion vectors from the candidate list when the collocated motion vectors are included in the collocated block, when the collocated motion vectors point outside of the sub-picture, and when a flag is set to indicate the sub-picture is treated as a picture. A current motion vector for the current block is determined from the candidate list of candidate motion vectors. The current block is decoded based on the current motion vector. The current block is forwarded for display as part of a decoded video sequence.

公开(公告)号：US12120360B2

公开(公告)日：2024-10-15

申请号：US17199018

申请日：2021-03-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Fnu Hendry ,  Jianle Chen

IPC: H04N19/184 ,  H04N19/119 ,  H04N19/169 ,  H04N19/174 ,  H04N19/176 ,  H04N19/46 ,  H04N19/70 ,  H04N19/96

CPC classification number: H04N19/96 ,  H04N19/119 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184 ,  H04N19/1883 ,  H04N19/46 ,  H04N19/70

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream including image data divided into one or more slices. The one or more slices are further divided into one or more tiles. The mechanism further includes determining that a first slice contains a single tile based on a first flag. The mechanism further includes decoding the first slice to generate a reconstructed image.

公开(公告)号：US12041256B2

公开(公告)日：2024-07-16

申请号：US17492352

申请日：2021-10-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N7/12 ,  H04N19/159 ,  H04N19/172 ,  H04N19/46

CPC classification number: H04N19/46 ,  H04N19/159 ,  H04N19/172

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a flag and a plurality of coded pictures including an intra random access point (IRAP) picture and one or more non-leading pictures associated with the IRAP picture. When the flag is set to a first value any leading pictures associated with the IRAP picture precede, in decoding order, all non-leading pictures associated with the IRAP picture. When the flag is set to a second value a non-leading picture precedes, in decoding order, an initial leading picture associated with the IRAP picture. The IRAP picture, any leading pictures associated with the IRAP picture, and the one or more non-leading pictures associated with the IRAP picture are decoded in decoding order based on the flag.