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Method and device for adjusting white balance

An adjustment method and technology of white balance, applied to color signal processing circuits, instruments, static indicators, etc., can solve the problem of low white balance efficiency

Active Publication Date: 2021-04-23
HANGZHOU HIKVISION DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current way of adjusting the white balance of the display screen is basically manual, that is, people adjust the white balance through their eyes or with the help of some simple optical instruments. Adjustment, leading to the problem of low efficiency of white balance adjustment

Method used

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  • Method and device for adjusting white balance
  • Method and device for adjusting white balance
  • Method and device for adjusting white balance

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Experimental program
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Embodiment approach

[0118] In the first embodiment, the target adjustment value of the brightness parameter among the white balance adjustment parameters corresponding to the highest gray scale can be set to the first brightness value, and the target adjustment value of the X component corresponding to the highest gray scale is the first X value, The target adjustment value of the Y component corresponding to the highest gray scale is the first Y value.

[0119] In the first step, the first X value and the first Y value can be determined as the target adjustment values ​​of the X components and Y components corresponding to the gray scales other than the highest gray scale, and used as the second X value and the second Y value respectively .

[0120] That is to say, the target adjustment values ​​of the X component and the Y component corresponding to the full grayscale are the same, the first X value is equal to the second X value, and the first Y value is equal to the second Y value. In this w...

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Abstract

The embodiment of the present invention provides a white balance adjustment method and device. By adjusting the RGB components, the brightness parameter, X component, and Y component corresponding to the highest gray scale are respectively adjusted, and other parameters are determined according to the first target adjustment value. The target adjustment value of the gray scale, and then adjust the brightness parameter, X component, and Y component corresponding to other gray scales by adjusting the Gamma parameter. Through the technical solution provided by the embodiment of the present invention, the automatic adjustment of white balance is realized by combining the two adjustment methods of adjusting RGB components and adjusting Gamma parameters, which improves the adjustment efficiency and accuracy of white balance, and enhances the display effect.

Description

technical field [0001] The invention relates to the technical field of displays, in particular to a white balance adjustment method and device. Background technique [0002] In the display screen, the three primary colors of red, green, and blue can be mixed to produce white. White balance is an indicator to describe the white accuracy of white, and it is also an important factor for the display effect of the display screen. Therefore, the adjustment of the white balance is very important in the display of the display screen. [0003] Generally speaking, when the ratio of the three primary colors of red, green and blue is 1:4.6:0.16, pure white will be displayed. But for different regions, different people, and according to their own habits, there will be different standards for white. For example, some places will be used to warmer whites, and some places will be used to cooler whites. For different standards, it can be obtained by changing the ratio of the three primary...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/73G09G5/10G09G5/02
CPCG09G5/02G09G5/10H04N9/73
Inventor 蓝明华王德江陶骥华
Owner HANGZHOU HIKVISION DIGITAL TECH