公开(公告)号：US20210136423A1

公开(公告)日：2021-05-06

申请号：US17150968

申请日：2021-01-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jianle Chen ,  Yin Zhao ,  Haitao Yang

IPC: H04N19/96 ,  H04N19/169

Abstract: A video coding mechanism is disclosed. The mechanism includes partitioning an image to create at least one coding tree unit (CTU) with at least one coding tree node. The mechanism further includes determining that the coding tree node height is twice a maximum transform unit (TU) height and the coding tree node width is twice a maximum TU width. The mechanism further includes selecting a split mode for the coding tree node based on the determination. The split mode is selected from a quad-tree split, a horizontal binary-tree split, and no split. The mechanism further includes applying the split mode to the coding tree node to create one or more coding units (CUs). The mechanism further includes encoding the CUs into a bitstream. The mechanism further includes transmitting the bitstream toward a decoder.

公开(公告)号：US20210092433A1

公开(公告)日：2021-03-25

申请号：US17111376

申请日：2020-12-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang Chen ,  Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/513 ,  H04N19/176 ,  H04N19/189

Abstract: This application provides a motion vector obtaining method and apparatus. The method includes: determining a target offset vector of a block and identifier information of a target picture, wherein the block comprises at least one sub-block; determining a location of the sub-block; determining, as a target location coordinate value of a collocated sub-block, a location coordinate value obtained by performing a clipping operation on an initial location coordinate value in a range, wherein the initial location coordinate value is based on the location of the sub-block and the target offset vector; and obtaining a motion vector of the sub-block based on a motion vector corresponding to the target location coordinate value. Thus, a range of the target offset vector is limited, so that a quantity of memory read times can be reduced in a process of obtaining the motion vector of the collocated sub-block.

公开(公告)号：US10911788B2

公开(公告)日：2021-02-02

申请号：US16689550

申请日：2019-11-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin Zhao ,  Haitao Yang ,  Shan Gao

IPC: H04N19/96 ,  H04N19/147 ,  H04N19/157 ,  H04N19/182 ,  H04N19/70

Abstract: A video image decoding method for parsing split mode information of a coding tree node in a bitstream, obtaining a split mode of the coding tree node from a candidate split mode set of the coding tree node based on the split mode information, parsing the bitstream to obtain coding information of the coding tree node, and reconstructing a pixel value of the coding tree node based on the split mode information and the coding information of the coding tree node.

公开(公告)号：US10834430B2

公开(公告)日：2020-11-10

申请号：US16728287

申请日：2019-12-27

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.

公开(公告)号：US10812835B2

公开(公告)日：2020-10-20

申请号：US16233932

申请日：2018-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhao Wang ,  Siwei Ma ,  Shan Gao ,  Haitao Yang

IPC: H04N19/96 ,  H04N19/176 ,  H04N19/119 ,  H04N19/157 ,  H04N19/167

Abstract: A decoding method includes: parsing a data stream, and if partitioning an image block with a size of 2N×2N using a quadtree partition pattern is allowed, processing a 2N×N first subimage block and a 2N×2N second subimage block or an N×2N first subimage block and an N×2N second subimage block in a constraint subimage processing mode, wherein an image block partition pattern obtained for the partitioned second subimage block and the partitioned first subimage block is different from an image block partition pattern obtained after the 2N×2N image block is partitioned using the quadtree partition pattern, where the 2N×N first subimage block and the 2N×N second subimage block or the N×2N first subimage block and the N×2N second subimage block are obtained by partitioning the image block with the size of 2N×2N.

公开(公告)号：US20200252610A1

公开(公告)日：2020-08-06

申请号：US16838948

申请日：2020-04-02

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Jianle Chen

IPC: H04N19/12 ,  H04N19/147 ,  H04N19/176 ,  H04N19/61 ,  H04N19/625 ,  H04N19/96

Abstract: A mechanism for position dependent spatial varying transform (SVT) for video coding. A prediction block and a corresponding transformed residual block are received at a decoder. A type of spatial varying transform (SVT) employed to generate the transformed residual block is determined. A position of the SVT relative to the transformed residual block is also determined. An inverse of the SVT is applied to the transformed residual block to reconstruct a reconstructed residual block. The reconstructed residual block is then combined with the prediction block to reconstruct an image block.

公开(公告)号：US20200244976A1

公开(公告)日：2020-07-30

申请号：US16848555

申请日：2020-04-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin Zhao ,  Haitao Yang ,  Shan Liu

IPC: H04N19/196 ,  H04N19/61 ,  H04N19/119 ,  H04N19/70 ,  H04N19/176

Abstract: A video decoding device receives a bitstream including a prediction block and a residual block with coefficients transformed by a Spatial Varying Transform (SVT). The video decoding device determines a type of SVT employed to transform the coefficients in the residual block and determines a position of the SVT relative to the residual block by determining a candidate position step size and a position index for the SVT. The video decoding device applies an inverse transform to the coefficients based on the SVT type and position to create a reconstructed residual block. The video decoding device applies the reconstructed residual block to the prediction block to reconstruct a video block and reconstructs a video sequence for display, the video sequence including a video frame that includes the reconstructed video block.

公开(公告)号：US20200154118A1

公开(公告)日：2020-05-14

申请号：US16744987

申请日：2020-01-16

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haitao Yang ,  Hong Zhang ,  Shan Liu

IPC: H04N19/30 ,  H04N19/117 ,  H04N19/186 ,  H04N19/176

Abstract: A chroma prediction method includes: obtaining luma information and chroma information of a to-be-processed image block, first processing information, and second processing information, where the first processing information indicates a downsampling processing manner used for a luma component of the to-be-processed image block, and the second processing information indicates a downsampling processing manner used for a chroma component of the to-be-processed image block; reconstructing a transient luma block of the to-be-processed image block based on the luma information of the to-be-processed image block, where a resolution of the transient luma block is determined by using a sampling format of the to-be-processed image block and the first processing information; and obtaining a prediction block of a transient chroma block of the to-be-processed image block based on the resolution of the transient luma block, the sampling format of the to-be-processed image block, and the second processing information.

公开(公告)号：US10554997B2

公开(公告)日：2020-02-04

申请号：US15797728

申请日：2017-10-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hong Zhang ,  Haitao Yang

IPC: H04N19/513 ,  H04N19/139 ,  H04N19/176 ,  H04N19/573 ,  H04N19/58 ,  H04N19/172 ,  H04N19/182 ,  H04N19/44 ,  H04N19/51

Abstract: A video coding method includes obtaining a first motion vector field (MVF) set, obtaining a plurality of second MVFs according to the first MVF set and based on a preset vector operation method, determining a motion compensation prediction (MCP) signal of the target sub picture block from M MCP reference pictures according to the plurality of second MVFs and based on an MCP algorithm, obtaining a prediction residual of the target sub picture block according to a picture signal of the target sub picture block and the MCP signal of the target sub picture block, performing coding processing on the prediction residual of the target sub picture block to obtain a coded signal of the prediction residual of the target sub picture block, and sending the coded signal of the prediction residual of the target sub picture block to a peer decoder.

公开(公告)号：US20200021831A1

公开(公告)日：2020-01-16

申请号：US16584141

申请日：2019-09-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin Zhao ,  Haitao Yang ,  Shan Gao

IPC: H04N19/44 ,  H04N19/96 ,  H04N19/192 ,  G06F9/30

Abstract: This application relates to video coding/decoding technologies, and discloses an image decoding method, a video decoder, an image encoding method, a video encoder, and a video coding/decoding system. The image decoding method includes: obtaining information about a first leaf node obtained by splitting a coding tree unit serving as a root node; when the information about the first leaf node meets a split condition, obtaining split instruction information of the first leaf node; when the split instruction information of the first leaf node is used to instruct to split the first leaf node, obtaining encoding information corresponding to a second leaf node obtained by splitting the first leaf node serving as a root node; and generating, based on the encoding information corresponding to the second leaf node, a reconstructed image corresponding to the second leaf node.