White balance adjustment method and system based on color gamut mapping and white balance terminal

A color gamut mapping and adjustment method technology, which is applied in the field of white balance adjustment, can solve the problems of discrete neutral point distribution and easy deviation or even abnormality of white balance adjustment method

Active Publication Date: 2020-10-27
FUZHOU ROCKCHIP SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for most scenes, due to the complexity of the light source, the distribution of neutral points is very discrete and will not be concentrated in a certain calibrated light s

Method used

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  • White balance adjustment method and system based on color gamut mapping and white balance terminal
  • White balance adjustment method and system based on color gamut mapping and white balance terminal
  • White balance adjustment method and system based on color gamut mapping and white balance terminal

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Embodiment Construction

[0063]Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0064] It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implemen...

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Abstract

The invention provides a white balance adjustment method and system based on color gamut mapping, and a white balance terminal. The method comprises the steps of obtaining a white point region and a standard color gamut obtained based on experimental data; acquiring a target image color gamut based on a target image acquired by a camera; calculating a gain color gamut of the target image color gamut relative to the standard color gamut; obtaining an intersection of the white point region and the gain color gamut to obtain an effective gain region; if the effective gain region is empty, takingthe gravity center point of the gain color gamut as a white balance gain coefficient; and if the effective gain area is not empty, calculating white balance gain based on the effective gain region. According to the white balance adjustment method and system based on color gamut mapping and the white balance terminal, discrete neutral point distribution is effectively constrained based on a color gamut mapping algorithm, and a relatively reasonable white balance gain coefficient is given when neutral colors do not exist in a scene, so that the accuracy of white balance adjustment is greatly improved.

Description

technical field [0001] The present invention relates to the technical field of white balance adjustment, in particular to a white balance adjustment method, system and white balance terminal based on color gamut mapping. Background technique [0002] White balance is an index that describes the accuracy of white after the three primary colors of red, green and blue are mixed in the display. White balance is a very important concept in the field of TV photography, through which a series of problems of color reproduction and tone processing can be solved. White balance is produced along with the true color reproduction of electronic images, which can make the camera image accurately reflect the color status of the subject. [0003] The process of adjusting the white balance is called white balance adjustment. There are generally three ways to adjust the white balance on the early equipment: preset white balance, manual white balance adjustment and automatic tracking white ba...

Claims

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Application Information

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IPC IPC(8): H04N9/73
CPCH04N23/88
Inventor 杨培杉
Owner FUZHOU ROCKCHIP SEMICON
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