公开(公告)号：US12302029B2

公开(公告)日：2025-05-13

申请号：US17214056

申请日：2021-03-26

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N5/272 ,  H04N13/178 ,  H04N13/183 ,  H04N21/431 ,  G06F3/01 ,  G06F3/04842

Abstract: A client, a server, and a method for processing media data, the method including obtaining an overlay and information about a region associated with the overlay, where the information about the region associated with the overlay is used to indicate the region associated with the overlay, and displaying the overlay when a trigger operation for the region associated with the overlay is detected.

公开(公告)号：US20250088670A1

公开(公告)日：2025-03-13

申请号：US18883013

申请日：2024-09-12

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), the PU including a picture header (PH) network abstraction layer (NAL) unit having a picture header NAL unit type (PH_NUT) and an associated video coding layer (VCL) NAL unit, the PH_NUT signifying that a layer identifier (ID) of the PH NAL unit is equal to a layer ID of the associated video coding layer (VCL) NAL unit and a temporal ID of the PH NAL unit is equal to a temporal ID of the PU; and decoding a coded picture from the PU to obtain a decoded picture.

公开(公告)号：US12250389B2

公开(公告)日：2025-03-11

申请号：US17370911

申请日：2021-07-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Ye-Kui Wang ,  Fnu Hendry

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

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a plurality of sub-pictures partitioned from a picture such that a union of the sub-pictures covers a total area of the picture without overlap. The bitstream is parsed to obtain the one or more sub-pictures. The one or more sub-pictures are decoded to create a video sequence. The video sequence is forwarded for display.

公开(公告)号：US12238336B2

公开(公告)日：2025-02-25

申请号：US17470783

申请日：2021-09-09

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/70 ,  H04N19/107 ,  H04N19/14 ,  H04N19/162 ,  H04N19/169 ,  H04N19/172 ,  H04N19/174 ,  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 receiving the coded video bitstream, the coded video bitstream containing a gradual decoding refresh (GDR) flag corresponding to a coded video sequence (CVS); determining, by the video decoder, whether a GDR picture is present in the CVS based on a value of the GDR flag; initiating, by the video decoder, decoding of the CVS at the GDR picture when the value of the GDR flag indicates that the GDR picture is present; and generating, by the video decoder, an image according to the CVS as decoded. A corresponding method of encoding implemented by a video encoder is also disclosed.

公开(公告)号：US20250063188A1

公开(公告)日：2025-02-20

申请号：US18816528

申请日：2024-08-27

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

Abstract: A method of decoding implemented by a video decoder is provided. The method includes receiving a bitstream including a coded video sequence start (CVSS) access unit (AU), wherein the CVSS AU contains a picture unit (PU) for each layer, and wherein a coded picture in each PU is a coded layer video sequence start (CLVSS) picture; identifying the coded picture from one of the layers based on a picture order count (POC) value; and decoding the coded picture to obtain a decoded picture.

公开(公告)号：US20250039423A1

公开(公告)日：2025-01-30

申请号：US18773117

申请日：2024-07-15

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

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：US12200264B2

公开(公告)日：2025-01-14

申请号：US17713998

申请日：2022-04-05

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 method of decoding includes receiving a bitstream having a plurality of layers and a video parameter set (VPS), where the VPS includes a direct reference layer flag, where the direct reference layer flag equal to a first value specifies that a second layer is not a direct reference layer for a first layer, and where the direct reference layer flag equal to a second value specifies that the second layer is the direct reference layer for the first layer; deriving a reference layer flag by: initially setting the reference layer flag to the first value; and updating the reference layer flag to the second value when the direct reference layer flag has the second value; and decoding a picture from the first layer in accordance with the reference layer flag to obtain a decoded picture.

公开(公告)号：US20250008095A1

公开(公告)日：2025-01-02

申请号：US18742363

申请日：2024-06-13

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 is disclosed. The mechanism includes receiving a bitstream comprising a current picture including a sub-picture coded according to inter-prediction. A motion vector for a block of the sub-picture is determined. A clipping function is applied to sample locations in a reference block to support application of an interpolation filter when the motion vector points outside of the sub-picture and when a flag is set to indicate the sub-picture is treated as a picture. The interpolation filter is applied to results of the clipping function to obtain a predicted sample value. The block is decoded based on the predicted sample value. The block is forwarded for display as part of a decoded video sequence.

公开(公告)号：US12184878B2

公开(公告)日：2024-12-31

申请号：US17246026

申请日：2021-04-30

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04N19/463 ,  H04N19/109 ,  H04N19/117 ,  H04N19/174 ,  H04N19/186 ,  H04N19/187

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a first header parameter set (HPS) containing a first type of coding tool parameters, a second HPS containing a second type of coding tool parameters, a slice header, and a slice associated with the slice header. The mechanism further includes determining that the slice header contains a first reference to the first HPS and a second reference to the second HPS. The mechanism further includes decoding the slice using the first type of coding tool parameters and the second type of coding tool parameters based on the determination that the slice header contains the first reference and the second reference. The mechanism further includes forwarding the slice for display as part of a decoded video sequence.

公开(公告)号：US20240430485A1

公开(公告)日：2024-12-26

申请号：US18757169

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 method of decoding includes receiving a bitstream having a plurality of layers and a video parameter set (VPS), where the VPS includes a direct reference layer flag, where the direct reference layer flag equal to a first value specifies that a second layer is not a direct reference layer for a first layer, and where the direct reference layer flag equal to a second value specifies that the second layer is the direct reference layer for the first layer; deriving a reference layer flag by: initially setting the reference layer flag to the first value; and updating the reference layer flag to the second value when the direct reference layer flag has the second value; and decoding a picture from the first layer in accordance with the reference layer flag to obtain a decoded picture.