Fast adaptive white balance correction method

A technology of white balance correction and self-adaptation, applied in cathode ray tube indicators, instruments, color signal processing circuits, etc., can solve problems such as poor adjustment accuracy and adjustment effect, low efficiency of liquid crystal screen products, and slow white balance adjustment speed , to achieve the effect of increasing the adjustment speed, improving the adjustment accuracy and adjustment effect, and improving the brightness adjustment speed

Inactive Publication Date: 2014-12-10
SHENZHEN MTC
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to provide a fast self-adaptive white balance correction method to solve the problem in the prior art that the white balance adjustment speed is slow, and the adjustment accuracy and adjustment effect are poor, resulting in low efficiency of the finished product of the LCD screen

Method used

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Examples

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Embodiment

[0041] Example: Image 6 It is a flow chart of chromaticity acceleration adjustment in the white balance correction method of the present invention; before adjusting the white balance of each screen, an optimal RGB value (including R value, G value and B value) is preset for the screen to be tested. This RGB value can make the initial color temperature of all screens to be tested in this production fall near the standard range or directly meet the standard. Specifically, it records the RGB that is successfully debugged each time. Make it form a data fluctuation curve. Then take the difference between the maximum value and the minimum value on this curve, and divide it by 2 to get the median value A 1 , and then calculate the difference between the second largest value and the second smallest value, and divide it by 2 to get the median value A 2 . And operate sequentially to get the last median value A n , and then subtract all the RGB values ​​from the median value A1 to ...

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Abstract

The invention relates to the field of display correction, in particular to a fast adaptive white balance correction method used for correcting the white balance of a display. The method includes measuring a display to be measured, namely measuring a brightness value and chroma value of the display to be measured; correcting the brightness, namely adjusting the brightness of the display to be measured into the range of a preset brightness value; correcting the chroma, namely adjusting the chroma of the display to be measured into the range of a preset chroma value. The adaptive method is adopted, according to the differences of the display, the brightness of the display is adjusted according to the optimal brightness, and the brightness adjusting speed is increased; one to three of a R value, a G value and a B value are adjusted synchronously according to the adjustment requirements, the speed of adjusting the chroma value to the range of the preset chroma value is increased greatly, the adjusting effect adaptive to the display most is achieved in an adaptive manner, the white balance adjusting speed can be increased, the adjusting accuracy and effect are improved, the finishing efficiency of liquid crystal screens is improved, and the producing efficiency is improved.

Description

technical field [0001] The invention relates to the field of display screen correction, in particular to a fast self-adaptive white balance correction method. Background technique [0002] Chromaticity coordinate is the coordinate of color. The commonly used color coordinates are the CIE1931Yxy chromaticity coordinate diagram, with x on the horizontal axis and y on the vertical axis. With color coordinates, a point can be determined on the chromaticity diagram, which accurately represents the luminous color, that is to say, the chromaticity coordinate diagram accurately represents all colors, that is, the approximate triangle in the chromaticity coordinate diagram is all Color collection. The LCD screen cannot fully display all colors. Different screens have different color ranges that they can display. According to the color coordinates of the red, green and blue vertices of the LCD screen connected in sequence, the chromaticity triangle of the LCD screen is obtained. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G5/02H04N9/73
Inventor 何胜斌刘飞
Owner SHENZHEN MTC
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