公开(公告)号：US20220166982A1

公开(公告)日：2022-05-26

申请号：US17670622

申请日：2022-02-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yin ZHAO ,  Haitao YANG

IPC: H04N19/124 ,  H04N19/186 ,  H04N19/103 ,  H04N19/167 ,  H04N19/50

Abstract: This application discloses a quantization parameter (QP) setting method includes: determining that a current coding unit (CU) is a chroma CU; and separately performing the following processing on at least one luma CU: when the at least one luma CU has no residual, and both a previous luma CU and a luma-chroma CU that have been encoded before the at least one luma CU in the current quantization group (QG) have no residual, modifying a basic QP of the at least one luma CU to a predictive QP; setting a basic QP of the current CU to the basic QP of the at least one luma CU corresponding to the preset position of the current CU; and performing encoding processing on the current CU based on the basic QP of the current CU.

公开(公告)号：US20210352304A1

公开(公告)日：2021-11-11

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: H04N19/186 ,  H04N19/176 ,  H04N19/70 ,  H04N19/60 ,  H04N19/44

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：US20210321101A1

公开(公告)日：2021-10-14

申请号：US17357684

申请日：2021-06-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haitao YANG ,  Yin ZHAO ,  Lian ZHANG

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

Abstract: This application discloses a prediction mode determining method and apparatus, an encoding device, and a decoding device. The method includes: determining a split mode for a current picture block; determining whether a first picture subblock that meets a preset condition is obtained after the current picture block is split in the split mode; if it is determined that the first picture subblock is obtained after the split, splitting the current picture block in the split mode to obtain a plurality of picture subblocks, where the plurality of picture subblocks include the first picture subblock; and determining that a same prediction mode is used for the plurality of picture subblocks, where the prediction mode for the plurality of picture subblocks is an intra prediction mode or an inter prediction mode. During implementation of this application, there is no need to parse all bitstreams, thereby facilitating hardware pipeline processing and improving efficiency.

公开(公告)号：US20210306643A1

公开(公告)日：2021-09-30

申请号：US17345295

申请日：2021-06-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin ZHAO ,  Haitao YANG ,  Riyang ZHAO ,  Zhongliang LI ,  Lian ZHANG

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

Abstract: Embodiments include a picture reconstruction method and apparatus for a video picture. The picture reconstruction method includes: obtaining a prediction mode of a current coding unit, and/or obtaining a prediction partition mode of the current coding unit, where the current coding unit includes a luma coding block and a chroma coding block, and the prediction partition mode is a mode of splitting the current coding unit into prediction blocks or prediction units; obtaining a transform block of the current coding unit based on the prediction partition mode and/or the prediction mode; and generating a reconstructed picture block of the current coding unit based on the transform block. According to the method in the embodiments, video coding efficiency can be improved.

公开(公告)号：US20210289203A1

公开(公告)日：2021-09-16

申请号：US17336712

申请日：2021-06-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin ZHAO ,  Haitao YANG ,  Jianle CHEN

IPC: H04N19/122 ,  H04N19/176 ,  H04N19/18 ,  H04N19/61 ,  H04N19/119

Abstract: A video decoding method includes parsing a bitstream to obtain a split mode to transform units (TUs) in a current coding unit (CU). Each of the TUs has a serial number in a one-to-one correspondence with positions of the TUs in the current CU. A transform coefficient of a luminance transform block of a current TU in the TUs is obtained. A transform type of the luminance transform block of the current TU is obtained based on the split mode and a serial number of the current TU. An inverse transform on the transform coefficient of the luminance transform block of the current TU is performed based on the transform type of the luminance transform block of the current TU to obtain a reconstructed residual of the luminance transform block of the current TU. A reconstructed block of the current CU is obtained based on the reconstructed residual.

公开(公告)号：US20200221140A1

公开(公告)日：2020-07-09

申请号：US16817885

申请日：2020-03-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin ZHAO ,  Haitao YANG ,  Shan LIU

IPC: H04N19/96 ,  H04N19/14 ,  H04N19/169

Abstract: This application provides a method for determining a coding tree node split mode and a coding device. The method includes the step of determining a non-split based coding cost for coding a current image area corresponding to the current node and determining a binary tree split based coding cost for coding the current image area. The method further includes determining, based on the non-split based coding cost and the binary tree split based coding cost, whether a triple tree split based coding cost for coding the current image area needs to be obtained. If the triple tree split based coding cost needs to be obtained, a triple tree split is performed on the current node. The method then determines a split mode of the current node that corresponds to a minimum coding cost.

公开(公告)号：US20250039412A1

公开(公告)日：2025-01-30

申请号：US18906531

申请日：2024-10-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

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

Abstract: A method comprising obtaining a bitstream, the bitstream comprises a transform unit syntax and a coding unit syntax, the transform unit syntax includes a value of a first flag and a value of a second flag related to, respectively, a first chroma transform block and a second chroma transform block of a current transform unit or a current sub-transform unit within the current transform unit, the first or second flag specifies whether the first or second chroma transform block contains at least one transform coefficient levels not equal to 0, the coding unit syntax includes a value of a third flag specifying whether a transform tree structure is present or not; and deriving a value of a fourth flag based on the values of the first, second, and third flags, the fourth flag specifies whether a luma transform block contains at least one transform coefficient levels not equal to 0.

公开(公告)号：US20240305784A1

公开(公告)日：2024-09-12

申请号：US18665853

申请日：2024-05-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yin ZHAO ,  Haitao YANG ,  Jianle CHEN

IPC: H04N19/132 ,  H04N19/159 ,  H04N19/169 ,  H04N19/176 ,  H04N19/186 ,  H04N19/96

CPC classification number: H04N19/132 ,  H04N19/159 ,  H04N19/176 ,  H04N19/186 ,  H04N19/1883 ,  H04N19/96

Abstract: Embodiments of this application disclose an intra prediction method for a video sequence. The method includes: obtaining a size and a split mode of a chroma coding tree node; determining, based on the size and the split mode of the chroma coding tree node, whether to allow cross-component linear model (CCLM) intra prediction to be performed on a chroma coding unit included in the chroma coding tree node; determining a prediction mode of the chroma coding unit depending on whether to allow CCLM to be performed on the chroma coding unit; and processing the chroma coding unit based on the prediction mode of the chroma coding unit to obtain prediction samples of the chroma coding unit.

公开(公告)号：US20240233335A1

公开(公告)日：2024-07-11

申请号：US18616599

申请日：2024-03-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Dequan YU ,  Yin ZHAO ,  Haitao YANG

IPC: G06V10/77 ,  G06V10/774 ,  G06V10/82

CPC classification number: G06V10/7715 ,  G06V10/774 ,  G06V10/82

Abstract: A feature map processing method includes: determining P target strides based on a preset correspondence between a stride and a feature map size range and a size of a target feature map, where P is a positive integer; and invoking a neural network model to process the target feature map, to obtain a processing result of the target feature map, where the neural network model includes P dynamic stride modules, a stride of a dynamic stride module of the P dynamic stride modules is a target stride corresponding to a dynamic stride module in the P target strides.

公开(公告)号：US20240221230A1

公开(公告)日：2024-07-04

申请号：US18604842

申请日：2024-03-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yibo SHI ,  Yunying GE ,  Jing WANG ,  Jue MAO ,  Yin ZHAO ,  Haitao YANG

IPC: G06T9/00

CPC classification number: G06T9/001 ,  G06T9/002

Abstract: This application provides a feature map encoding and decoding method and an apparatus, and relates to the field of artificial intelligence (AI)-based data encoding and decoding technologies. The feature map decoding method includes: obtaining a bitstream of a to-be-decoded feature map, where the to-be-decoded feature map includes a plurality of feature elements; obtaining a first probability estimation result corresponding to each feature element based on the bitstream, where the first probability estimation result includes a first peak probability; determining a set of first feature elements and a set of second feature elements from the plurality of feature elements based on a first threshold and the first peak probability corresponding to each feature element; and obtaining a decoded feature map based on the set of first feature elements and the set of second feature elements. This can improve encoding and decoding performance while reducing encoding and decoding complexity.