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：US11706458B2

公开(公告)日：2023-07-18

申请号：US17129332

申请日：2020-12-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ye-Kui Wang

IPC: H04N19/70 ,  H04N19/103 ,  H04N19/136 ,  H04N19/184 ,  H04N19/597

CPC classification number: H04N19/70 ,  H04N19/103 ,  H04N19/136 ,  H04N19/184 ,  H04N19/597

Abstract: A method of point cloud coding (PCC) implemented by a video decoder. The method includes receiving an encoded bitstream including a group of frames header disposed outside a coded representation of a texture component or a geometry component and identifying a video codec used for coding the texture component or the geometry component, and decoding the encoded bitstream.

公开(公告)号：US20230128843A1

公开(公告)日：2023-04-27

申请号：US18072331

申请日：2022-11-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： FNU Hendry ,  Ye-Kui Wang

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

Abstract: A method for storing a coded video bitstream. The method includes obtaining the coded video bitstream and storing the coded video bitstream in at least one storage medium. The coded video bitstream includes a first reference picture list syntax structure and a second reference picture list syntax structure. Each reference picture list syntax structure contains a number of entries. A first reference picture list of a current slice and a second reference picture list of the current slice are derived based on the first reference picture list syntax structure and the second reference picture list syntax structure. The first reference picture list and the second reference picture list are derived for bitstream conformance checking instead of for decoding a current picture or pictures following the current picture in decoding order when the current slice comprises an intra (I) slice of a non-intra random access point (IRAP) picture.

公开(公告)号：US20220239934A1

公开(公告)日：2022-07-28

申请号：US17714008

申请日：2022-04-05

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/423 ,  H04N19/172 ,  H04N19/174 ,  H04N19/105 ,  H04N19/70

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：US20220232234A1

公开(公告)日：2022-07-21

申请号：US17714635

申请日：2022-04-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Vladyslav Zakharchenko ,  Jianle Chen ,  Ye-Kui Wang ,  Jeff Moguillansky

IPC: H04N19/44 ,  H04N19/146 ,  H04N19/597 ,  H04N19/184

Abstract: A method is implemented by a PCC decoder and comprises: receiving, by the PCC decoder, a point cloud bitstream; performing, by the PCC decoder, buffering of the point cloud bitstream based on a time, the performing comprising determining the time based on a delay and a delay offset; and decoding, by the PCC decoder, the point cloud bitstream based on the buffering. A method is implemented by a PCC decoder and comprises: receiving, by the PCC decoder, a point cloud bitstream; performing, by the PCC decoder, buffering of the point cloud bitstream based on a delay, the delay is based on a first delay and a second delay; and decoding, by the PCC decoder, the point cloud bitstream based on the buffering.

公开(公告)号：US20220217411A1

公开(公告)日：2022-07-07

申请号：US17701390

申请日：2022-03-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/70 ,  H04N19/30

Abstract: A video coding mechanism is disclosed. The mechanism includes encoding one or more coded pictures into a bitstream. A supplemental enhancement information (SEI) network abstraction layer (NAL) unit with a NAL unit type (nal_unit_type) equal to a suffix SEI NAL unit type (SUFFIX_SEI_NUT) is also encoded into the bitstream. The SEI NAL unit contains a scalable nesting SEI message. A set of bitstream conformance tests is performed on the bitstream based on the scalable nesting SEI message. The bitstream is stored for communication toward a decoder.

公开(公告)号：US20220217393A1

公开(公告)日：2022-07-07

申请号：US17703389

申请日：2022-03-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

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

Abstract: A video coding mechanism is disclosed. The mechanism includes encoding a bitstream comprising one or more output layer sets (OLSs). A non-scalable-nested supplemental enhancement information (SEI) message is also encoded into the bitstream. The non-scalable-nested SEI message is constrained to apply only to a zeroth (0-th) OLS. The 0-th OLS includes only an output layer. A set of bitstream conformance tests are performed on the 0-th OLS based on the non-scalable-nested SEI message. The bitstream is stored for communication toward a decoder.

公开(公告)号：US20220217391A1

公开(公告)日：2022-07-07

申请号：US17702032

申请日：2022-03-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

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

Abstract: A video coding mechanism is disclosed. The mechanism includes encoding a bitstream comprising one or more layers. A scalable nesting supplemental enhancement information (SEI) message is encoded into the bitstream in a current SEI network abstraction layer (NAL) unit. The scalable nesting SEI message contains one or more scalable-nested SEI messages and one or more scalable nesting layer identifiers (Ids) that specify layer Id values of the layers to which the scalable-nested SEI messages apply except a layer Id value of the current SEI NAL unit. A set of bitstream conformance tests are performed on the layers based on the scalable-nested SEI messages. The bitstream is stored for communication toward a decoder.

公开(公告)号：US20220217385A1

公开(公告)日：2022-07-07

申请号：US17700813

申请日：2022-03-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/46 ,  H04N19/423 ,  H04N19/105 ,  H04N19/172

Abstract: A method of decoding is provided. The method includes receiving a video bitstream including a plurality of layers and a sequence parameter set (SPS) including a flag, wherein each of the plurality of layers referring to the SPS has a same set of (DPB) parameters regardless of whether each of the plurality of layers is an output layer or a non-output layer when the flag has a first value, and wherein each of the plurality of layers referring to the SPS has a first set of DPB parameters that apply to output layers and a second set of DPB parameters that apply to non-output layers when the flag has a second value; and decoding a picture from one of the plurality of layers to obtain a decoded picture. A corresponding method of encoding is also provided.

公开(公告)号：US20220217329A1

公开(公告)日：2022-07-07

申请号：US17700715

申请日：2022-03-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang

IPC: H04N19/105 ,  H04N19/169 ,  H04N19/187 ,  H04N19/172

Abstract: A method of decoding is provided. The method includes receiving, by the video decoder, a video bitstream including a video parameter set (VPS) and a plurality of layers, where each layer is included in at least one output layer set (OLS) specified by the VPS; and decoding, by the video decoder, a picture from one of the plurality of layers. A method of encoding is also provided. The method of encoding includes generating, by the video encoder, a plurality of layers and a video parameter set (VPS) specifying one or more output layer sets (OLSs), wherein each layer from the plurality of layers is included in at least one of the OLSs specified by the VPS; encoding, by the video encoder, the plurality of layers and the VPS into a video bitstream; and storing, by the video encoder, the video bitstream for communication toward a video decoder.