公开(公告)号：US12096034B2

公开(公告)日：2024-09-17

申请号：US17713991

申请日：2022-04-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/00 ,  H04N19/105 ,  H04N19/136 ,  H04N19/159 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/187 ,  H04N19/30 ,  H04N19/423 ,  H04N19/46 ,  H04N19/463 ,  H04N19/50 ,  H04N19/593 ,  H04N19/70

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/136 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/187 ,  H04N19/188 ,  H04N19/30 ,  H04N19/423 ,  H04N19/46 ,  H04N19/463 ,  H04N19/50 ,  H04N19/593

Abstract: A method of decoding is provided. The method includes receiving a sub-bitstream having a sequence parameter set (SPS) with a profile tier level (PTL) syntax structure for an output layer set (OLS) with only one layer; setting a number of layers in the OLS equal to one based on the OLS having the only one layer; obtaining the PTL syntax structure for the OLS with the only one layer from the SPS when the number of layers in the OLS has been set equal to one; and decoding a picture from the only one layer using the PTL syntax structure to obtain a decoded picture. A corresponding method of encoding is also provided.

公开(公告)号：US20240305808A1

公开(公告)日：2024-09-12

申请号：US18419243

申请日：2024-01-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/46 ,  H04N19/159 ,  H04N19/169 ,  H04N19/172 ,  H04N19/176

CPC classification number: H04N19/46 ,  H04N19/159 ,  H04N19/172 ,  H04N19/176 ,  H04N19/188

Abstract: A method of decoding a coded video bitstream is provided. The method includes receiving the coded video bitstream, wherein the coded video bitstream contains a gradual decoding refresh (GDR) picture and a first flag having a first value; setting a second value of a second flag equal to the first value of the first flag; emptying any previously-decoded pictures from a decoded picture buffer (DPB) based on the second flag having the second value; and decoding a current picture after the DPB has been emptied. A corresponding method of encoding is also provided.

公开(公告)号：US12088835B2

公开(公告)日：2024-09-10

申请号：US17370918

申请日：2021-07-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Fnu Hendry

IPC: H04N19/436 ,  H04N19/119 ,  H04N19/132 ,  H04N19/137 ,  H04N19/169 ,  H04N19/174 ,  H04N19/184 ,  H04N19/44 ,  H04N19/593 ,  H04N19/176 ,  H04N19/31 ,  H04N19/70

CPC classification number: H04N19/436 ,  H04N19/119 ,  H04N19/132 ,  H04N19/137 ,  H04N19/174 ,  H04N19/184 ,  H04N19/188 ,  H04N19/1883 ,  H04N19/44 ,  H04N19/593 ,  H04N19/176 ,  H04N19/31 ,  H04N19/70

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a sub-picture partitioned from a picture and a sequence parameter set (SPS) comprising a sub-picture size and a sub-picture location. The SPS is parsed to obtain the sub-picture size of the sub-picture and the sub-picture location of the sub-picture. The sub-picture is decoded based on the sub-picture size and the sub-picture location to create a video sequence. The video sequence is forwarded for display.

公开(公告)号：US12081783B2

公开(公告)日：2024-09-03

申请号：US17700017

申请日：2022-03-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/46 ,  H04N19/169 ,  H04N19/172

CPC classification number: H04N19/46 ,  H04N19/172 ,  H04N19/188 ,  H04N19/1883

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising an output layer set (OLS) and a video parameter set (VPS). The OLS includes one or more layers of coded pictures and the VPS includes an OLS mode identification code (ols_mode_idc) specifying that for each OLS, all layers in the each OLS are output layers. The output layers are determined based on the ols_mode_idc in the VPS. A coded picture from the output layers is decoded to produce a decoded picture. The decoded picture is forwarded for display as part of a decoded video sequence.

公开(公告)号：US12075076B2

公开(公告)日：2024-08-27

申请号：US17703401

申请日：2022-03-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/00 ,  H04N19/149 ,  H04N19/154 ,  H04N19/169 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/44 ,  H04N19/149 ,  H04N19/154 ,  H04N19/172 ,  H04N19/187 ,  H04N19/188 ,  H04N19/30 ,  H04N19/423 ,  H04N19/46 ,  H04N19/70

Abstract: A video coding mechanism is disclosed. The mechanism includes encoding a bitstream comprising a video parameter set (VPS) and one or more sublayers. A buffering period (BP) supplemental enhancement information (SEI) message comprising a BP maximum sublayers minus one (bp_max_sublayers_minus1) is also encoded into the bitstream. The bp_max_sublayers_minus1 is set to a value in a range of zero to a maximum number of sublayers indicated in the VPS. A hypothetical reference decoder (HRD) is initialized based on the BP SEI message. A set of bitstream conformance tests are performed on the sublayers. The bitstream is stored for communication toward a decoder.

公开(公告)号：US20240276074A1

公开(公告)日：2024-08-15

申请号：US18419305

申请日：2024-01-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Yuqun Fan ,  Peiyun Di

IPC: H04N21/81 ,  H04N21/218 ,  H04N21/2343 ,  H04N21/84

CPC classification number: H04N21/816 ,  H04N21/21805 ,  H04N21/2343 ,  H04N21/84

Abstract: A method comprises obtaining media content associated with a first viewpoint and a second viewpoint, wherein a first position of the first viewpoint is static and a second position of the second viewpoint is dynamic; generating a first VWPT descriptor based on the media content and describing the first viewpoint; generating a second VWPT descriptor based on the media content and describing the second viewpoint; generating an MPD comprising the first VWPT descriptor and the second VWPT descriptor; and transmitting the MPD.

公开(公告)号：US12022125B2

公开(公告)日：2024-06-25

申请号：US17714001

申请日：2022-04-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/00 ,  H04N19/105 ,  H04N19/136 ,  H04N19/159 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/187 ,  H04N19/30 ,  H04N19/423 ,  H04N19/46 ,  H04N19/463 ,  H04N19/50 ,  H04N19/593 ,  H04N19/70

CPC classification number: H04N19/70 ,  H04N19/105 ,  H04N19/136 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/187 ,  H04N19/188 ,  H04N19/30 ,  H04N19/423 ,  H04N19/46 ,  H04N19/463 ,  H04N19/50 ,  H04N19/593

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a sequence parameter set (SPS) including a SPS video parameter set identifier (sps_video_parameter_set_id). The bitstream also comprises a coded picture in a set of video coding layer (VCL) network abstraction layer (NAL) units associated with a layer having a NAL unit header layer identifier (nuh_layer_id). A general layer index corresponding to the nuh_layer_id (GeneralLayerIdx[nuh_layer_id]) is set equal to zero when the sps_video_parameter_set_id is equal to zero. The coded picture is decoded from the VCL NAL units based on the GeneralLayerIdx[nuh_layer_id] to produce a decoded picture The decoded picture is forwarded for display as part of a decoded video sequence.

公开(公告)号：US12022064B2

公开(公告)日：2024-06-25

申请号：US17520348

申请日：2021-11-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/107 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/107 ,  H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a gradual decoding refresh (GDR) picture, a recovery point picture following the GDR picture in decoding order, and a header associated with the GDR picture. The header includes a picture order count (POC) least significant bit (LSB) value coded prior to a recovery POC value. A POC for the GDR picture is determined based on the POC LSB value. The recovery POC value is determined based on the POC for the GDR picture. The recovery POC value indicates a POC for the recovery point picture. The bitstream is decoded according to GDR based on the GDR picture and the recovery point picture.

公开(公告)号：US12003700B2

公开(公告)日：2024-06-04

申请号：US17536621

申请日：2021-11-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  FNU Hendry

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/46

CPC classification number: H04N19/105 ,  H04N19/159 ,  H04N19/172 ,  H04N19/46

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a current picture and a reference picture list structure comprising an inter-layer reference picture flag. The mechanism determines an entry in the reference picture list structure associated with the current picture is an inter-layer reference picture (ILRP) entry based on the inter-layer reference picture flag. The current picture is decoded based on an inter-layer reference picture indicated by the entry in the reference picture list structure when the entry is the ILRP entry. The current picture is forwarded for display as part of a decoded video sequence.

公开(公告)号：US11997257B2

公开(公告)日：2024-05-28

申请号：US17578178

申请日：2022-01-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/44 ,  H04N19/46 ,  H04N19/58 ,  H04N19/70 ,  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. The method includes obtaining a first reference picture list of a current slice represented in the coded video bitstream and a second reference picture list of the current slice, and marking a status of a reference picture in a decoded picture buffer (DPB) based on the first reference picture list and the second reference picture list when the current slice is a first slice in a current picture to which the current slice belongs. The status of the reference picture in the decoded picture buffer is used for short-term reference, used for long-term reference, or unused for reference. The method also includes using the reference picture in a reconstructing process of the current picture or a picture following the current picture when the status of the reference picture is used for short-term reference or used for long-term reference.