公开(公告)号：US20250080760A1

公开(公告)日：2025-03-06

申请号：US18887400

申请日：2024-09-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/31 ,  H04N19/70

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising one or more layers and a scalable nesting supplemental enhancement information (SEI) message. The scalable nesting SEI message includes one or more scalable-nested SEI messages and a scalable nesting output layer set (OLS) flag. The scalable nesting OLS flag is set to specify whether the scalable-nested SEI messages apply to specific OLSs or specific layers. A coded picture is decoded from the one or more layers to produce a decoded picture. The decoded picture is forwarded for display as part of a decoded video sequence.

公开(公告)号：US20250047847A1

公开(公告)日：2025-02-06

申请号：US18923398

申请日：2024-10-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fnu Hendry ,  Ye-Kui Wang

IPC: H04N19/119 ,  H04N19/174 ,  H04N19/184 ,  H04N19/46

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a sub-bitstream including: a sub-picture of a picture partitioned into a plurality of slices including a first slice, a parameter set associated with the picture and the sub-picture, and a slice header associated with the first slice. The parameter set is parsed to obtain an identifier and a length of a slice address of the first slice. A slice address for the first slice is determined from the slice header based on the identifier and the length of the slice address. The sub-bitstream is decoded to create a video sequence of sub-pictures including the first slice. The video sequence of sub-pictures is forwarded for display.

公开(公告)号：US12200262B2

公开(公告)日：2025-01-14

申请号：US17702049

申请日：2022-03-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/70 ,  H04N19/169 ,  H04N19/172 ,  H04N19/187 ,  H04N19/30 ,  H04N19/46

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream at a decoder. The bitstream comprises one or more layers and a scalable nesting supplemental enhancement information (SEI) message in a current SEI network abstraction layer (NAL) unit. The scalable nesting SEI message contains scalable-nested SEI messages and a scalable nesting all layers flag (all_layers_flag) that specifies whether the scalable-nested SEI messages apply to all layers that have a layer identifier (Id) that is greater than or equal to a layer Id of the current SEI NAL unit. A coded picture is decoded from the one or more layers to produce a decoded picture. The decoded picture is forwarded for display as part of a decoded video sequence.

公开(公告)号：US12184877B2

公开(公告)日：2024-12-31

申请号：US17688249

申请日：2022-03-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/46 ,  H04N19/172 ,  H04N19/187 ,  H04N19/70

Abstract: A video coding mechanism is disclosed. The mechanism includes encoding a bitstream comprising one or more layers of coded pictures. A video parameter set (VPS) is also encoded into the bitstream. The VPS includes an each layer is an output layer set (OLS) flag (each_layer_is_an_ols_flag) when all layers specified by the VPS are independently coded without inter-layer prediction. The each_layer_is_an_ols_flag specifies whether each OLS contains only one layer. The bitstream is stored for communication toward a decoder.

公开(公告)号：US12177486B2

公开(公告)日：2024-12-24

申请号：US17702426

申请日：2022-03-23

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/70 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  H04N19/44 ,  H04N19/46

Abstract: A method of decoding is provided. The method includes receiving a video bitstream including a picture unit (PU), where any decoding capability information (DCI) network abstraction layer (NAL) unit, video parameter set (VPS) NAL unit, sequence parameter set (SPS) NAL unit, or picture parameter set (PPS) NAL unit referred to by the PU precedes a picture header (PH) NAL unit of the PU and a first video coding layer (VCL) NAL unit of the PU; and decoding a coded picture from the PU to obtain a decoded picture.

公开(公告)号：US20240397079A1

公开(公告)日：2024-11-28

申请号：US18675853

申请日：2024-05-28

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/52 ,  H04N19/105 ,  H04N19/132 ,  H04N19/136 ,  H04N19/159 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/33 ,  H04N19/46 ,  H04N19/577

Abstract: A method of decoding includes determining, by the video decoder, whether a resolution of a current picture being decoded is the same as the resolution of reference pictures identified by a reference picture list associated with the current picture; enabling, by the video decoder, decoder-side motion vector refinement (DMVR) for a current block of the current picture when the resolution of the current picture is determined to be the same as the resolution of each of the reference pictures; disabling, by the video decoder, the DMVR for the current block of the current picture when the resolution of the current picture is determined to be different than the resolution of either of the reference pictures; and refining, by the video decoder, motion vectors corresponding to the current block using the DMVR when the DMVR flag is enabled for the current block.

公开(公告)号：US20240388736A1

公开(公告)日：2024-11-21

申请号：US18757220

申请日：2024-06-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/70 ,  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

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a current picture and a reference picture list syntax structure (ref_pic_list_struct( )) comprising a number of reference entries (num_ref_entries) constrained to a range of zero to a maximum decoded picture buffer size plus an offset. The current picture is decoded based on the ref_pic_list_struct( ) to produce a decoded picture. The decoded picture is forwarded for display as part of a decoded video sequence

公开(公告)号：US12126817B2

公开(公告)日：2024-10-22

申请号：US18336804

申请日：2023-06-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： F N U 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: A method implemented in an encoder for encoding a video bitstream that includes coded data for a plurality of pictures, each of the plurality of pictures comprises at least one slice. The method includes encoding a flag that indicates whether tile information for a picture is present in a picture parameter set or present in a slice header, where the tile information indicates a location of a slice within the picture; encoding the tile information in only the picture parameter set when the flag indicates that the tile information for the picture is encoded in the picture parameter set; encoding the tile information in only the slice header when the flag indicates that the tile information for the picture is encoded in the slice header; and encoding data of the picture in the video bitstream based on the tile information.

公开(公告)号：US12081784B2

公开(公告)日：2024-09-03

申请号：US17700834

申请日：2022-03-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/46 ,  H04N19/107 ,  H04N19/11 ,  H04N19/136 ,  H04N19/14 ,  H04N19/172 ,  H04N19/184 ,  H04N19/187 ,  H04N19/43 ,  H04N19/593

CPC classification number: H04N19/46 ,  H04N19/107 ,  H04N19/11 ,  H04N19/136 ,  H04N19/14 ,  H04N19/172 ,  H04N19/184 ,  H04N19/187 ,  H04N19/43 ,  H04N19/593

Abstract: A method of decoding implemented by a video decoder is provided. The method includes receiving a bitstream including a sequence parameter set (SPS) containing a first flag and an indicator of a length of a picture order count (POC) most significant bits (MSB) value when present in a header referring to the SPS, where a value of the first flag specifies that a second flag is present in the header referring to the SPS, and where a value of the second flag specifies that the POC MSB value is present in the header; determining a POC value based on the POC MSB value; identifying a picture from the bitstream based on the POC value; and decoding the picture to obtain a decoded picture.

公开(公告)号：US12069284B2

公开(公告)日：2024-08-20

申请号：US17701011

申请日：2022-03-22

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/44 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70

CPC classification number: H04N19/44 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70

Abstract: A method comprises: receiving, by a video decoder, a video bitstream comprising an RPL flag, wherein the RPL flag equal to a first value specifies that RPL signaling is present in a PH, and wherein the RPL flag equal to a second value specifies that RPL signaling is not present in the PH and may be present in slice headers; and decoding, by the video decoder using the RPL flag, a coded picture to obtain a decoded picture. A comprises: receiving, by a video decoder, a video bitstream comprising an SAO flag, wherein the SAO flag specifies that SAO information may be present or is not present in a PH or specifies that the SAO information may be present or is not present in slice headers; and decoding, by the video decoder using the SAO flag, a coded picture to obtain a decoded picture.