公开(公告)号：US20230188739A1

公开(公告)日：2023-06-15

申请号：US18166890

申请日：2023-02-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/44 ,  H04N19/136 ,  H04N19/176 ,  H04N19/625

CPC classification number: H04N19/44 ,  H04N19/136 ,  H04N19/176 ,  H04N19/625

Abstract: A video decoding method includes determining a usage of an SVT- vertical (V) or an SVT-horizontal (H) for a residual block; determining a transform block position of a transform block of the residual block; determining a transform type of the transform block, wherein the transform type indicates a horizontal transform and a vertical transform for the transform block, wherein at least one of the horizontal transform or the vertical transform is a discrete sine transform (DST)-7; and reconstructing the residual block based on the transform type, the transform block position, and transform coefficients of the transform block.

公开(公告)号：US11601663B2

公开(公告)日：2023-03-07

申请号：US17561049

申请日：2021-12-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N11/02 ,  H04N19/44 ,  H04N19/136 ,  H04N19/176 ,  H04N19/625

Abstract: A video decoding method includes determining a usage of an SVT-vertical (V) or an SVT-horizontal (H) for a residual block; determining a transform block position of a transform block of the residual block; determining a transform type of the transform block, wherein the transform type indicates a horizontal transform and a vertical transform for the transform block, wherein at least one of the horizontal transform or the vertical transform is a discrete sine transform (DST)-7; and reconstructing the residual block based on the transform type, the transform block position, and transform coefficients of the transform block.

公开(公告)号：US20230065862A1

公开(公告)日：2023-03-02

申请号：US17981163

申请日：2022-11-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Alexander Alexandrovich Karabutov ,  Hyomin Choi ,  Ivan Bajic ,  Robert A. Cohen ,  Saeed Ranjbar Alvar ,  Sergey Yurievich Ikonin ,  Elena Alexandrovna Alshina ,  Yin Zhao

IPC: G06T9/00 ,  G06V10/44 ,  G06V10/74 ,  G06V10/82 ,  H04N19/172

Abstract: The present disclosure relates to scalable encoding and decoding of pictures. In particular, a picture is processed by one or more network layers of a trained module to obtain base layer features. Then, enhancement layer features are obtained, e.g. by a trained network processing in sample domain. The base layer features are for use in computer vision processing. The base layer features together with enhancement layer features are for use in picture reconstruction, e.g. for human vision. The base layer features and the enhancement layer features are coded in a respective base layer bitstream and an enhancement layer bitstream. Accordingly, a scalable coding is provided which supports computer vision processing and/or picture reconstruction.

公开(公告)号：US20220264123A1

公开(公告)日：2022-08-18

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: H04N19/186 ,  H04N19/176

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：US11418783B2

公开(公告)日：2022-08-16

申请号：US17212777

申请日：2021-03-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Han Gao ,  Yin Zhao ,  Semih Esenlik

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/132 ,  H04N19/176

Abstract: This application provides an example method for processing video or image data. The method includes obtaining a non-overlapped region. The method also includes obtaining a transform block (TB) corresponding to a coding block. The method further includes determining whether the TB cross a border of the non-overlapped region or not. The method also includes, if the TB cross a border of the non-overlapped region, splitting the TB to obtain at least two sub-TBs according to the border of the non-overlapped region.

公开(公告)号：US11375213B2

公开(公告)日：2022-06-28

申请号：US17368502

申请日：2021-07-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich Chernyak ,  Yin Zhao ,  Sergey Yurievich Ikonin ,  Jianle Chen

IPC: H04N11/02 ,  H04N19/186 ,  H04N19/176 ,  H04N19/44 ,  H04N19/60 ,  H04N19/70

Abstract: A method of coding implemented by a decoding device or encoding device, the method comprising obtaining a bitstream, the bitstream comprises a transform unit syntax; the syntax comprises at least two cbf flags for chroma blocks (in an example, transform unit syntax correspond to either transform unit or sub-transform units which include two chroma cbf flags: tu_cbf_cb and tu_cbf_cb—one flag for each chroma plane), a chroma cbf flag specifies whether certain block has residue in correspondent color plane; deriving a value of a luma cbf flag tu_cbf_luma based on one or any combination of a value of a cu_cbf flag, values of two chroma cbf flags corresponding to a current transform unit or sub-transform unit, location of the sub-transform unit within transform unit, values of luma and chroma cbf flags correspondent to previous sub-transform units in the current transform unit.

公开(公告)号：US20220191476A1

公开(公告)日：2022-06-16

申请号：US17689724

申请日：2022-03-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lu Yu ,  Xuguang Zuo ,  Yin Zhao ,  Haitao Yang

IPC: H04N19/105 ,  H04N19/503 ,  H04N19/142 ,  H04N19/172 ,  H04N19/58 ,  H04N19/159 ,  H04N19/184

Abstract: A picture encoding/decoding method and a related apparatus are provided. The picture decoding method includes obtaining a current picture from a video, the current picture being segmented using random access points into multiple video segments supporting a random access function; selecting, from a knowledge base, K reference pictures of the current picture, wherein at least one reference picture in the knowledge base does not belong to a random access segment in which the current picture is located, the random access segment comprising a picture sequence arranged in a decoding order from a closest random access point before the current picture to a closest random access point after the current picture; and decoding the current picture according to the K reference pictures.

公开(公告)号：US11323746B2

公开(公告)日：2022-05-03

申请号：US17021259

申请日：2020-09-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/96 ,  H04N19/70 ,  H04N19/186 ,  H04N19/13

Abstract: A context modeling method and apparatus of a split flag are provided. The method includes: obtaining a height and a width of a current node, a height of a first leaf node in a first direction, and a width of a second leaf node in a second direction; determining whether the current node meets a first preset condition and a second preset condition, where the first preset condition includes the height of the current node is greater than the height of the first leaf node, and the second preset condition includes the width of the current node is greater than the width of the second leaf node; and determining a context model of a split flag of the current node based on whether the first and second preset conditions are met.

公开(公告)号：US20220116638A1

公开(公告)日：2022-04-14

申请号：US17561049

申请日：2021-12-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/44 ,  H04N19/176 ,  H04N19/136 ,  H04N19/625

Abstract: A video decoding method includes determining a usage of an SVT-vertical (V) or an SVT-horizontal (H) for a residual block; determining a transform block position of a transform block of the residual block; determining a transform type of the transform block, wherein the transform type indicates a horizontal transform and a vertical transform for the transform block, wherein at least one of the horizontal transform or the vertical transform is a discrete sine transform (DST)-7; and reconstructing the residual block based on the transform type, the transform block position, and transform coefficients of the transform block.

公开(公告)号：US11277648B2

公开(公告)日：2022-03-15

申请号：US16949362

申请日：2020-10-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Shan Liu

IPC: H04N19/96 ,  H04N19/172 ,  H04N19/184

Abstract: Embodiments of this application disclose a decoding method includes: obtaining a bitstream including picture data; parsing the bitstream to obtain node split mode information of a first-level coding tree and node split mode information of a second-level coding tree, if the split mode corresponding to the first node is no further splitting, parsing the bitstream to obtain encoding information of the first node; and decoding and reconstructing, based on the encoding information of the first node, a coding unit corresponding to the first node, to obtain a picture corresponding to the picture data.