公开(公告)号：US20220248012A1

公开(公告)日：2022-08-04

申请号：US17724841

申请日：2022-04-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Roman Igorevich CHERNYAK ,  Timofey Mikhailovich SOLOVYEV ,  Yin ZHAO ,  Sergey Yurievich IKONIN ,  Jianle CHEN

IPC: H04N19/119 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

Abstract: Apparatuses and methods for Intra Sub-Partitions (ISP) are provided. The method includes: obtaining information of ISP, and determining a size of a chroma transform block (TB) of the coding unit based on SubWidthC and SubHeightC when at least a first condition is fulfilled. The first condition includes the information of ISP indicates that ISP is used for splitting the luma coding block. SubWidthC and SubHeightC are variables depending on chroma format information. The chroma format information indicates a chroma format of a picture the coding unit belongs to. The method can apply to all chroma format. The chroma format includes at least one of: 4:2:0, or 4:2:2, or 4:4:4. An accurate and versatile way to determine the size of the chroma transform block for the ISP is achieved.

公开(公告)号：US20220094947A1

公开(公告)日：2022-03-24

申请号：US17541467

申请日：2021-12-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiang MA ,  Haitao YANG ,  Yin ZHAO ,  Lian ZHANG

IPC: H04N19/159 ,  H04N19/176 ,  H04N19/103 ,  H04N19/186 ,  H04N19/70

Abstract: This application discloses a method for constructing an MPM list, a method for obtaining an intra prediction mode of a chroma block, and an apparatus. In a specific implementation, a MIP mode is used for a current block, and the method for constructing an MPM list includes: obtaining intra prediction mode information of a neighboring block; determining, based on the intra prediction mode information of the neighboring block, whether an intra prediction mode of the neighboring block is the MIP mode; and skipping using the intra prediction mode of the neighboring block for MPM list construction of the current block if the intra prediction mode of the neighboring block is not the MIP mode; or using the intra prediction mode of the neighboring block for MPM list construction of the current block if the intra prediction mode of the neighboring block is the MIP mode.

公开(公告)号：US20210321127A1

公开(公告)日：2021-10-14

申请号：US17357473

申请日：2021-06-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin ZHAO ,  Haitao YANG ,  Lian ZHANG

IPC: H04N19/44 ,  H04N19/119 ,  H04N19/96 ,  H04N19/176

Abstract: This application discloses a video decoding method and apparatus, and a decoding device. The method includes: obtaining block information of a current picture block; determining, based on the block information, whether a split mode in a set of optional split modes is available determining a split mode of the current picture block from a determined available split mode; obtaining one CU or a plurality of CUs from the current picture block based on the split mode of the current picture block, and parsing a bitstream including the current picture block, to obtain decoding information of the one CU or the plurality of CUs, and decoding the CU based on the decoding information, to obtain a reconstructed block.

公开(公告)号：US20210306630A1

公开(公告)日：2021-09-30

申请号：US17345286

申请日：2021-06-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haitao YANG ,  Yin ZHAO ,  Riyang ZHAO ,  Zhongliang LI ,  Jing XIAO

IPC: H04N19/119 ,  H04N19/96 ,  H04N19/176 ,  H04N19/167

Abstract: This application relates to the field of video coding technologies, and discloses a video coder and a corresponding method, to help improve video coding performance. In this application, encoding and decoding are collectively referred to as coding. A video coding method includes: determining a block split policy of a current picture block based on a size relationship between the width and the height of the current picture block; applying the block split policy to the current picture block to obtain a coding block; and reconstructing the obtained coding block to reconstruct the current picture block.

公开(公告)号：US20210297688A1

公开(公告)日：2021-09-23

申请号：US17338896

申请日：2021-06-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Weiwei XU ,  Haitao YANG ,  Yin ZHAO

IPC: H04N19/50 ,  H04N19/105 ,  H04N19/159 ,  H04N19/176

Abstract: This application provides a weighted prediction method for multi-hypothesis encoding and an apparatus. The method includes: determining a first target prediction block of a to-be-processed picture block based on an inter prediction mode; determining a second target prediction block of the to-be-processed picture block based on an intra prediction mode; determining, based on indication information in a bitstream, weight coefficients respectively corresponding to the inter prediction mode and the intra prediction mode; and weighting a pixel value of the first target prediction block and a pixel value of the second target prediction block based on the weight coefficients, to obtain a prediction value of the to-be-processed picture block. Implementation of this application improves prediction accuracy of a pixel value of a picture block and encoding/decoding performance to some extent.

公开(公告)号：US20210211666A1

公开(公告)日：2021-07-08

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 ,  H04N19/132 ,  H04N19/105 ,  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：US20210185316A1

公开(公告)日：2021-06-17

申请号：US17187184

申请日：2021-02-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin ZHAO ,  Haitao YANG ,  Jianle CHEN ,  Lian ZHANG

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

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：US20190320198A1

公开(公告)日：2019-10-17

申请号：US16453863

申请日：2019-06-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin ZHAO ,  Peiyun DI ,  Lu YU

IPC: H04N19/577 ,  H04N19/70 ,  H04N19/573

Abstract: This disclosure provides an image encoding method and apparatus and an image decoding method and apparatus. For a to-be-encoded image in a to-be-encoded video sequence, a reference image may be selected from at least one knowledge-base image in a knowledge-base image set. In addition, bitstream data of the to-be-encoded image includes identification information used to identify the reference image of the to-be-encoded image.