公开(公告)号：US20220329845A1

公开(公告)日：2022-10-13

申请号：US17843030

申请日：2022-06-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Sixin LIN ,  Haitao YANG

IPC: H04N19/52 ,  H04N19/139 ,  H04N19/513 ,  H04N19/176 ,  H04N19/105 ,  H04N19/124 ,  H04N19/157

Abstract: An image encoding method includes: determining N encoded units from adjacent encoded units of a to-be-encoded unit according to a first preset rule, where a motion prediction mode of the N encoded units is the same as that of the to-be-encoded unit, generating an nth motion vector group by using a first preset algorithm and based on a motion vector of an nth encoded unit; determining, from obtained N motion vector groups according to a second preset rule, one motion vector group as an optimal motion vector group; determining a prediction sample value of each sample unit in the to-be-encoded unit by using a second preset algorithm and based on the optimal motion vector group; and encoding a prediction residual of each sample unit and an index identifier of the optimal motion vector group, to obtain a bitstream corresponding to the to-be-encoded unit.

公开(公告)号：US20220329795A1

公开(公告)日：2022-10-13

申请号：US17734829

申请日：2022-05-02

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：US20220279168A1

公开(公告)日：2022-09-01

申请号：US17740591

申请日：2022-05-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huanbang CHEN ,  Haitao YANG

IPC: H04N19/105 ,  H04N19/159 ,  H04N19/176 ,  H04N19/46 ,  G06T9/40 ,  H04N19/127

Abstract: A video picture prediction method and apparatus are provided, to provide a manner of determining a maximum length of a candidate motion vector list corresponding to a subblock merge mode. The method comprises: parsing a first indicator from a bitstream; if the first indicator indicates that a candidate mode used to inter predict the to-be-processed block comprises an affine mode, parsing a second indicator from the bitstream, where the second indicator is used to indicate a maximum length of a first candidate motion vector list, and the first candidate motion vector list is constructed for the to-be-processed block, a subblock merge prediction mode is used for the to-be-processed block; and determining the maximum length of the first candidate motion vector list based on the second indicator.

公开(公告)号：US20220245774A1

公开(公告)日：2022-08-04

申请号：US17720534

申请日：2022-04-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Quanhe YU ,  Haitao YANG ,  Jiantong ZHOU

IPC: G06T5/00 ,  G06T7/90 ,  G09G5/10

Abstract: A high dynamic range image processing method and apparatus, to improve a display effect of a high dynamic range image. The method includes: obtaining image information of a to-be-processed high dynamic range (HDR) image, the image information includes a maximum RGB component value of a first pixel corresponding to a first percentage and a maximum RGB component value of a second pixel corresponding to a second percentage; determining a maximum reference value of the HDR image; determining a maximum luminance modification value of the HDR image based on the maximum reference value and a plurality of preset hierarchy intervals, where the maximum luminance modification value is used to modify a largest value in maximum RGB component values of the plurality of pixels included in the HDR image; and adjusting a dynamic range of the HDR image based on the maximum luminance modification value.

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：US20220138992A1

公开(公告)日：2022-05-05

申请号：US17576575

申请日：2022-01-14

Applicant: Huawei Technologies Co., Ltd. ,  University of Science and Technology of China

Inventor： Feng WU ,  Haichuan MA ,  Dong LIU ,  Haitao YANG

IPC: G06T9/00 ,  G06T3/40

Abstract: The present disclosure provides an image decoding method based on a wavelet transform. The method includes: performing entropy decoding on the compressed bitstream to obtain a reconstructed wavelet coefficient; dequantizing the reconstructed wavelet coefficient to obtain a dequantized wavelet coefficient; and performing N inverse wavelet transforms on the dequantized wavelet coefficient based on the wavelet transform model to obtain a reconstructed image, where the wavelet transform model is implemented based on a convolutional neural network (CNN).

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：US20210006839A1

公开(公告)日：2021-01-07

申请号：US17025246

申请日：2020-09-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaomu LU ,  Jianle CHEN ,  Shan GAO ,  Haitao YANG

IPC: H04N19/82 ,  H04N19/176

Abstract: Embodiments of this application disclose a picture filtering method and apparatus, and a video codec, relate to the field of video coding technologies, and may be applied to, for example, but is not limited to, a deblocking filtering scenario, to help improve video coding performance. The picture filtering method may include: determining, based on dimension information of a to-be-filtered current picture block, a target filter used to filter the current picture block, where the dimension information of the current picture block includes the width or height of the current picture block; and performing filtering processing on the current picture block by using a target filter. The technical solutions disclosed in the embodiments of this application are applicable to a next-generation video coding technology.