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

A color gamut mapping and adjustment method technology, which is applied in the field of white balance adjustment, can solve the problems of discrete distribution of neutral points and easy deviation or even abnormality of white balance adjustment method, so as to improve accuracy, reduce calculation amount, and save system resources Effect

Active Publication Date: 2022-03-15
FUZHOU ROCKCHIP SEMICON
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  • 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 source area, or there are many scenes where there is no neutral color surface
Therefore, the above-mentioned white balance adjustment method is prone to deviation or even abnormality.

Method used

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

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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 present invention provides a white balance adjustment method, system and white balance terminal based on color gamut mapping, comprising the following steps: acquiring a white point area and a standard color gamut obtained based on experimental data; acquiring a target image color gamut based on a target image collected by a camera ; Calculate the gain color gamut of the target image color gamut relative to the standard color gamut; obtain the intersection of the white point area and the gain color gamut to obtain an effective gain area; if the effective gain area is empty, then Using the barycenter point of the gain color gamut as the white balance gain coefficient; if the effective gain area is not empty, then calculate the white balance gain based on the effective gain area. The white balance adjustment method, system and white balance terminal based on the color gamut mapping algorithm of the present invention can effectively constrain the distribution of discrete neutral points based on the color gamut mapping algorithm, and provide a relatively reasonable white balance gain when there is no neutral color in the scene coefficient, thus greatly improving the accuracy of white balance adjustment.

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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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/73
CPCH04N23/88
Inventor 杨培杉
Owner FUZHOU ROCKCHIP SEMICON
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