System, method and equipment for converting various HDR videos

Abstract

The invention belongs to the field of video processing, particularly relates to a system, a method and equipment for converting various HDR videos, and aims to solve the problems of image distortion after conversion of different HDR display standards, high implementation difficulty and large calculation amount. The system comprises a video processing device and a display device. The video processing device comprises a gamma curve correction processing unit which is configured to obtain a correction function value corresponding to each pixel point in an input HDR video, and multiply the correction function value with the corresponding pixel point to obtain a gamma FIX video; a color correction processing unit which is configured to perform color correction processing on the gamma FIX video to obtain a color gamut FIX video; a saturation processing unit which is configured to perform saturation processing on the color gamut FIX video and send the color gamut FIX video to the display device. The display device which is configured to display the received color gamut FIX video after saturation processing. According to the method, distortion caused by errors in multiple times of calculation is reduced, and meanwhile the calculation capacity and difficulty needed by conversion are reduced.

Description

technical field [0001] The invention belongs to the field of video processing, and in particular relates to a conversion system, method and equipment for various HDR videos. Background technique [0002] Due to the different materials, technologies and application scenarios of the HDR display end, the corresponding corrected gamma curves are also different. In the existing technology, such as the literature: "Method and device for generating a second image from a first image. P .Andrifong, M-J. Kollitis, D. Tuze, J. Rahpinsack, CN201880072693.1, 2018-11-06"; "A device and method for outputting content and a display device, Wu Shengbao , CN201610341332.5, 2016-05-20”; “Metadata conversion in HDR distribution, P. Andrévon, E. François, P. Perez, CN201980043860.4, 2019-05-21” and "Method and device for performing tone mapping of high dynamic range video, Chen Yingru, Li Wenfu, Zhang Dehao, Huang Taixiang, CN201910383854.5, 2019-05-09", etc., first perform color space conversio...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problems of image distortion after conversion of different HDR display standards, difficulty in implementation, and large amount of calculation, the first aspect of the present invention proposes a conversion system for various HDR videos, Applied to HDR video conversion with different gamma curves corresponding to the video input source and the display device, including video processing equipment and display equipment; the video processing equipment includes a gamma curve correction processing unit, a color correction processing unit, and a saturation processing unit;

Images