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：US20210092342A1

公开(公告)日：2021-03-25

申请号：US17110931

申请日：2020-12-03

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Le YUAN ,  Zheng WANG ,  Renjian WU ,  Fang HUANG

IPC: H04N9/873 ,  H04N9/77

Abstract: A video signal processing method which includes: performing luminance mapping and color gamut conversion after color space conversion and non-linear space-to-linear space conversion are performed on a to-be-processed video signal, performing linear space-to-non-linear space conversion and color space conversion on the color gamut-converted signal, and then performing saturation mapping on the converted signal, to obtain a video signal that matches a format supported by a display device, so that the to-be-processed video signal can be correctly displayed on the display device.

公开(公告)号：US20210120217A1

公开(公告)日：2021-04-22

申请号：US17135801

申请日：2020-12-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zheng WANG ,  Le YUAN ,  Renjian WU ,  Fang HUANG

IPC: H04N9/77 ,  H04N9/69 ,  G06T5/00

Abstract: Example video signal processing methods and apparatus are described. One example method includes performing chrominance compensation on a to-be-processed video signal based on a saturation adjustment factor corresponding to an initial luminance value of the to-be-processed video signal. As such, a color that is of the video signal obtained after chrominance compensation and that is perceived by human eyes is closer to a color of the video signal obtained before luminance mapping.