公开(公告)号：US20250088631A1

公开(公告)日：2025-03-13

申请号：US18946139

申请日：2024-11-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Han Gao ,  Semih Esenlik ,  Biao Wang ,  Anand Meher Kotra ,  Jianle Chen

IPC: H04N19/12 ,  H04N19/176 ,  H04N19/593 ,  H04N19/61

Abstract: A method of coding implemented by a decoding device or an encoding device comprises determining an intra prediction mode of a current block; and determining selecting of a secondary transform of the current block based on the intra prediction mode determined for the current block.

公开(公告)号：US12244858B2

公开(公告)日：2025-03-04

申请号：US17865376

申请日：2022-07-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Vladyslav Zakharchenko ,  Jianle Chen ,  Jeffrey Moguillansky

IPC: H04N19/597 ,  G06T1/20 ,  G06T15/00 ,  G06T17/20 ,  G06T19/00 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46

Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a plurality of two-dimensional (2D) patches in an atlas frame and a three-dimensional (3D) bounding box scale. The 2D patches are decoded. A point cloud is reconstructed by converting the 2D patches to a 3D patch coordinate system defined by each projection plane of the 3D bounding box. The 3D bounding box scale is applied to a 3D bounding box.

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：US20250056029A1

公开(公告)日：2025-02-13

申请号：US18931212

申请日：2024-10-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/44 ,  H04N19/12 ,  H04N19/124 ,  H04N19/176 ,  H04N19/184 ,  H04N19/51 ,  H04N19/61 ,  H04N19/625

Abstract: A video processing method includes: obtaining prediction information of a CU; obtaining, when the CU comprises only one residual TU and a size of the residual TU is less than a size of the CU, a TU partitioning mode of the CU and a residual position of the residual TU, wherein the TU partitioning mode and the residual position are used to determine a horizontal transform type and a vertical transform type; obtaining transform coefficients of the residual TU based on the horizontal transform type and the vertical transform type; and generating a bitstream that is for storing or transmitting and that includes the prediction information, a first flag that indicates the TU partitioning mode, a second flag that indicates the residual position, and the transform coefficients.

公开(公告)号：US12219135B2

公开(公告)日：2025-02-04

申请号：US18360639

申请日：2023-07-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen ,  Lian Zhang

IPC: H04N19/119 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186

Abstract: A picture partitioning method and apparatus are described. The method includes determining a split mode of a current node, where the current node includes a luma block and a chroma block. The method further includes determining, based on the split mode of the current node and a size of the current node, that the chroma block of the current node is not further split. In accordance with the chroma block of the current node not being further split, the method includes splitting the luma block of the current node based on the split mode of the current node. In accordance with the chroma block of the current node not being further split, the method may be used to split only the luma block of the current node, thereby improving encoding and decoding efficiency, reducing a maximum throughput of a codec, and facilitating implementation of the codec.

公开(公告)号：US12212778B2

公开(公告)日：2025-01-28

申请号：US17447952

申请日：2021-09-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Alexey Konstantinovich Filippov ,  Vasily Alexeevich Rufitskiy ,  Biao Wang ,  Semih Esenlik ,  Jianle Chen

IPC: H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/176

Abstract: Devices and methods for intra prediction of DC intra prediction mode are provided. The method includes: obtaining a value of an intra prediction reference line index of a transform block; obtaining prediction samples of the transform block based on reference samples from a reference line. The reference line is indexed by the value of the intra prediction reference line index. The method introduces a harmonization of MRL and non-directional intra prediction (i.e. DC). The harmonization consists of aligning the reference samples from a reference line, which is indexed by the value of the intra prediction reference line index.

公开(公告)号：US12192488B2

公开(公告)日：2025-01-07

申请号：US17729176

申请日：2022-04-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang Ma ,  Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/176 ,  H04N19/186

Abstract: Techniques are described of a linear model prediction mode. A set of reconstructed neighboring luma samples are determined. Two pairs of luma value and chroma value are determined according to N reconstructed neighboring luma samples, N reconstructed neighboring chroma samples, M reconstructed neighboring luma samples, and M reconstructed neighboring chroma samples. The minimum value of the N reconstructed neighboring luma samples is not less than the maximum luma value of the remaining reconstructed neighboring luma samples of the set of reconstructed neighboring luma samples. The maximum value of the M reconstructed neighboring luma samples is not larger than the minimum luma value of the remaining reconstructed neighboring luma samples of the set of reconstructed neighboring luma samples. M>1 and N>1. Linear model parameters are determined based on the two pairs of luma value and chroma value, and a predictive block is determined based on the linear model parameters.

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：US12167038B2

公开(公告)日：2024-12-10

申请号：US18455636

申请日：2023-08-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Biao Wang ,  Anand Meher Kotra ,  Semih Esenlik ,  Han Gao ,  Jianle Chen

IPC: H04N19/80 ,  H04N19/117 ,  H04N19/176 ,  H04N19/593 ,  H04N19/66

Abstract: A deblocking method is provided for deblocking a sub-partition boundary within a coding block during image encoding and/or image decoding process. The coding block is coded in an intra prediction mode and the coding block is partitioned into sub-partitions comprising a first sub-partition and a second sub-partition that is adjacent to the first sub-partition. The method comprises: determining a maximum filter length to be 1 for a first/second sub-partition when a width of the first or second sub-partition is 4 samples, or when a height of the first or second sub-partition is 4 samples; modifying a value of up to one sample of the first or second sub-partition, wherein the value of the up to one sample is obtained from a row or a column of the first or second sub-partition that is perpendicular to and adjacent to the sub-partitions boundary between the first sub-partition and the second sub-partition.