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Color correction table generation method and compound color measuring separation method for digital video device

A digital image and color correction technology, applied in image communication, color signal processing circuits, instruments, etc., can solve the problems of long time to generate color correction tables, poor color matching, etc., to improve color accuracy, improve quality, and shorten time Effect

Inactive Publication Date: 2008-09-17
INNOCOM TECH (SHENZHEN) CO LTD +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of long generation time and poor color matching of digital imaging device color correction tables in the prior art, the present invention provides a method for generating color correction tables of digital imaging devices that can shorten generation time and improve color matching

Method used

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  • Color correction table generation method and compound color measuring separation method for digital video device
  • Color correction table generation method and compound color measuring separation method for digital video device
  • Color correction table generation method and compound color measuring separation method for digital video device

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Embodiment Construction

[0014] The method for generating the color correction table of the digital image device of the present invention needs to apply a system, which includes a data acquisition and analysis computer, a video signal generator, a color analyzer and a digital image device that needs to be measured and adjusted.

[0015] The data acquisition and analysis computer includes a VGA (Video Graphics Array) graphics card and a plurality of registers, and the video signal generator can be the VGA graphics card. The digital image device includes a memory. The color analyzer adopts a non-contact measurement design, which provides a brightness and chromaticity coordinate system XYZ, where the coordinate values ​​X, Y, and Z represent the three primary colors of red, green, and blue respectively. degree of incentive value.

[0016] The video signal generator is a standard video signal generating source, which provides a white picture to the digital image device. The color analyzer directly obtai...

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Abstract

The invention relates to a method for generating a color correction table of a digital image device and a method for measuring and separating a composite color. The method for generating the color correction table comprises the following steps: closing the color correction function; initializing a system; measuring the basic points of the color gamut displayed by the digital image device; measuring the brightness value and the chroma stimulus value of a white picture of the digital image device; calculating the brightness values of red, green and blue of the white picture; interpolation calculating to obtain three real brightness characteristic curves of red, green and blue; calculating to obtain three idea characteristic curves of red, green and blue; finding the points most close to the brightness values of gray scales on the idea brightness characteristic curves, and storing the values corresponding to the points; and generating a color correction table according to the gray scales corresponding to the values in ascending order.

Description

technical field [0001] The invention relates to a method for generating a color correction table of a digital image device and a method for measuring and separating composite colors. Background technique [0002] As the use of digital imaging devices becomes more and more popular, people have higher and higher requirements on the display image quality of digital imaging devices. Generally, in the color theory of the three primary colors, any color is mixed by the three primary colors in a certain proportion, where the brightness of the color depends on the sum of the brightness of each single primary color, and the chromaticity of the color depends on the mixture of each single primary color. Proportion. In the digital imaging device that uses three primary colors for image display and image processing, the digital imaging device converts the video signal into a visually effective image display, and the digital imaging device displays the brightness and chromaticity of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N1/60H04N1/56H04N9/68H04N9/64
CPCG09G2320/0242G09G2320/0693G09G2320/0666G09G3/2003
Inventor 游欣德林利辉刘笑涡李延安夏学锋王剑锋
Owner INNOCOM TECH (SHENZHEN) CO LTD
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