公开(公告)号：US20220237754A1

公开(公告)日：2022-07-28

申请号：US17721602

申请日：2022-04-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Quanhe YU ,  Weiwei XU ,  Hu CHEN ,  Dongsheng WU ,  Le YUAN

IPC: G06T5/00

Abstract: This application provides an image processing method, including: adaptively determining at least one interpolation point based on feature information or dynamic metadata of a to-be-processed image, and determining the at least one interpolation point and a modified spline curve that passes through the at least one interpolation point, where the modified spline curve includes at least one of a linear spline curve or a cubic spline curve; and performing tone mapping on the to-be-processed image based on a modified tone mapping curve, where the modified tone mapping curve includes at least a part of an initial tone mapping curve and the modified spline curve. According to the method provided in this application, the tone mapping curve can be adaptively modified based on a scene requirement, so that images in various scenes can have a good display effect.

公开(公告)号：US20210235097A1

公开(公告)日：2021-07-29

申请号：US17230699

申请日：2021-04-14

Applicant: Huawei Technologies Co., Ltd. ,  TSINGHUA UNIVERSITY

Inventor： Quanhe YU ,  Jianhua ZHENG ,  Liqiang WANG ,  Yun HE

IPC: H04N19/176 ,  H04N19/60 ,  H04N19/172 ,  H04N19/184

Abstract: This application provides a transform method and an inverse transform method for a picture block, and an apparatus. The transform method for a picture block in this application includes: obtaining a to-be-encoded picture block in a to-be-processed picture, where the to-be-encoded picture block is an object on which encoding is performed; splitting the to-be-encoded picture block to obtain a plurality of picture subblocks; and transforming at least one of the picture subblocks. In this application, picture encoding efficiency is improved.

公开(公告)号：US20200021850A1

公开(公告)日：2020-01-16

申请号：US16579440

申请日：2019-09-23

Applicant: Huawei Technologies Co., Ltd. ,  Tsinghua University

Inventor： Benben NIU ,  Quanhe YU ,  Junyou CHEN ,  Jianhua ZHENG ,  Yun HE

IPC: H04N19/61 ,  H04N19/176 ,  H04N19/11 ,  H04N19/513 ,  H04N19/182 ,  H04N19/147

Abstract: The present disclosure disclose a video data decoding method. The method includes: receiving a bitstream; parsing the bitstream to obtain residual data of a current to-be-decoded image block, prediction information of the current to-be-decoded image block, and a pixel value transformation mode identifier of the current to-be-decoded block; obtaining predictors of the current to-be-decoded image block; obtaining reconstructed pixel values of pixels of the current to-be-decoded image block; and performing spatial transformation on the reconstructed pixel values of the pixels of the current to-be-decoded image block according to a pixel value transformation mode corresponding to the transformation mode identifier of the current to-be-decoded image block, to obtain transformed pixel values of the pixels of the current to-be-decoded image block. The embodiments of the present disclosure further disclose a video data encoding method, a decoding apparatus, and an encoding apparatus.