3D lookup table generation method, display color correction method and display color correction system

A look-up table and display technology, applied in static indicators, instruments, etc., can solve the problems of cumbersome operation, waste of human and material resources, high price, etc., and achieve the effect of high selectivity

Inactive Publication Date: 2019-06-07
SWIT ELECTRONICS
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  • Application Information

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Problems solved by technology

[0005] In fact, there are many PC-side color correction software on the market, but the price of such professional color correction software is very high, and most of the operations are cumbersome, which means

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  • 3D lookup table generation method, display color correction method and display color correction system
  • 3D lookup table generation method, display color correction method and display color correction system
  • 3D lookup table generation method, display color correction method and display color correction system

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] Display characteristics refer to a mapping relationship between the input RGB code and the output color of the display.

[0022] The 3D lookup table refers to the three-dimensional space mapping table in this article, and its function is to linearly transform the actual input RGB code to obtain a corresponding new RGB code. Then the 3D lookup table is used for linear interpolation to obtain the final display result.

[0023] Such as image 3 As shown, the display automatic color calibration system provided by the present invention includes a main controller 21, a color analyzer 20, a storage unit 19, and a driving circuit 18. The main controller 21 is provided with a peripheral interface 22, and the main controller 21 is connected with the color analysis The instrument 20 and the storage unit 19 are connected, and the drive circuit 18 is connected to...

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Abstract

The invention provides a 3D lookup table generation method and a display color correction method and system, and the method comprises the steps: driving a display screen to display a corresponding color according to a display instruction, and carrying out the sampling of the color actually displayed by the display screen until all the sampling is completed; Converting the sampled color values intoan LAB color space; Aiming at each RGB value in the 3D lookup table, selecting a sampling point corresponding to the RGB value; carrying out multivariate high-order linear regression equation calculation by using the color values of the selected sampling points converted into the LAB color space to obtain the values of coefficient variables of the multivariate high-order linear regression equation, the number of the selected sampling points being at least equal to the number of the coefficient variables of the multivariate high-order linear regression equation; And establishing a mapping relation between the RGB values and the output color values by using a multivariate high-order linear regression equation. The method is simple in algorithm, a user only needs one color analyzer to complete color correction except for a display, and a manufacturer only needs to add the algorithm into an original system to complete color correction.

Description

technical field [0001] The invention relates to a system for color calibration of a display, in particular to the color calibration of a professional-level display and the adjustment of color consistency, and in particular to a method for generating a 3D lookup table, a method for calibrating a color of a display, and a system for calibrating a color of a display. Background technique [0002] At present, with the development of the radio, film and television industry, the requirements for color reproduction have become higher and higher. When there is a large error between the color of the monitor and the standard color, it is necessary to adjust and correct the color of the display screen whose original color is distorted. This process of adjustment and correction is collectively referred to as color correction below. Color calibration generally includes adjustments to gamma, color gamut, and color temperature. [0003] Although the LCD screens have been debugged and cal...

Claims

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Application Information

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IPC IPC(8): G09G3/36
Inventor 薛浩喻金华蓝俊捷
Owner SWIT ELECTRONICS
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