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：US20190089981A1

公开(公告)日：2019-03-21

申请号：US16193954

申请日：2018-11-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhuoyi LV ,  Haitao YANG ,  Wenyi QIU ,  Dongsheng WU

IPC: H04N19/58 ,  H04N19/44 ,  H04N19/46

Abstract: The present disclosure provides a video encoding/decoding method and apparatus, so that usage of a background picture is synchronized on an encoder side and a decoder side. In this solution, a background picture that is to be used as a reference picture is determined, background-picture indication information is used to indicate a time point from which the background picture is used as the reference picture, the encoder side encodes to-be-coded video pictures by using the background picture as the reference picture from the time point indicated by the background-picture indication information, to generate a primary bitstream, and the encoder side transmits a background-picture bitstream, the background-picture indication information, and the primary bitstream to the decoder side.