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Color gamut mapping method and device, terminal equipment and storage medium

A technology of color gamut mapping and color gamut, which is applied in the field of image processing, can solve problems such as image color error, and achieve the effect of improving color accuracy

Pending Publication Date: 2021-12-10
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the color distribution of different color gamut color spaces is not evenly distributed, using the same conversion function for each color node will produce a certain degree of color shift, resulting in poor color accuracy of the converted image

Method used

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  • Color gamut mapping method and device, terminal equipment and storage medium
  • Color gamut mapping method and device, terminal equipment and storage medium
  • Color gamut mapping method and device, terminal equipment and storage medium

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Embodiment Construction

[0031] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0032] Currently, gamut mapping is usually implemented using calibration methods. That is, by measuring the calibration value between the two color gamuts, and determining a conversion function based on the calibration value, and then using the conversion function to convert the color value of each color node in the source color gamut to the target color gamu...

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Abstract

The invention provides a color gamut mapping method and device, terminal equipment and a storage medium, relates to the technical field of image processing, and can improve the color level of image conversion in a color gamut mapping process. The color gamut mapping method comprises the following steps: acquiring a first color gamut graph, wherein the first color gamut graph comprises a plurality of color node values of a first color gamut; inputting the first color gamut graph into a trained full convolution model to be processed and outputting a second color gamut graph, wherein the second color gamut graph comprises color node values in one-to-one correspondence with a plurality of color node values, the full convolution model comprises N convolution layers with the convolution kernel size being 1 * 1, N-1 activation functions are arranged in the N convolution layers in a penetrating mode, and N is an integer greater than or equal to 3.

Description

technical field [0001] The present application relates to the technical field of image processing, and in particular to a color gamut mapping method, device, terminal equipment and storage medium. Background technique [0002] In practical applications, the same original image or original video will have different effects (such as brightness, color, contrast, saturation, etc.) under different display devices, which is due to the color areas used by different display devices ( That is, the color gamut) is different, and the source color gamut of the image is often converted to the target color gamut by means of color gamut mapping, so that the effect of the same original image or original video displayed on different display devices is as consistent as possible. [0003] Currently, transfer functions are often used to implement gamut mapping. That is, by measuring the calibration value between the two color gamuts, and determining a conversion function based on the calibrati...

Claims

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Application Information

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IPC IPC(8): G06T5/00H04N21/2343H04N21/4402H04N7/01
CPCH04N21/234309H04N21/440218H04N7/01G06T2207/10016G06T2207/20081G06T2207/20084G06T5/92
Inventor 章政文陈翔宇董超乔宇
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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