Colour calibration method of display unit

Abstract

The invention discloses a colour calibration method of a display unit, comprising the following steps: setting a splicing wall to display pure-colour pictures in turn; shooting the pure-colour pictures and establishing the position corresponding relationships of the pixels of the splicing wall in the photo to the pixels of the actual splicing wall; calibrating photos according to a pre-set calibration line; establishing a general table for storing the colour values and setting the initial colour value in the general table as the photo colour value; adjusting the colour values of the pixels at the splicing joint of the splicing wall in the photo and updating the general table; separating the data corresponding to the display units according to the general table and transmitting the data to each display unit; when the display units work normally, decomposing the display data of each pixel into three primary colours and respectively inquiring the colour value in the sub-tables with the same primary colour; if the inquired colour value is less than the colour value currently displayed by the display unit, adjusting the display unit to display the inquired colour value; otherwise, not adjusting. The invention can locally adjust the display units and practically satisfies the requirement on consistent colour adjustment.

Description

technical field [0001] The invention relates to the technical field of image display, in particular to a method for calibrating the color of a display unit. Background technique [0002] In the patent application with the application number 200710028437.6 and the publication number CN101076128, a multi-screen splicing wall correction device and method are disclosed. The main control module together constitute the calibration device, as well as the computer. The camera module and the image data cache module are respectively connected to the display screen and the computer of the multi-screen splicing wall through the main control module. In this disclosed technical solution, the multi-screen splicing wall calibration method is as follows: each display unit of the display screen of the multi-screen splicing wall is set to display a specified picture, at least one picture is taken by the camera module and stored in the image data buffer module, and the computer Extract the co...

AI Technical Summary

Problems solved by technology

Therefore, if the adjustment range does not include all the situations mentioned above, it is impossible to truly achieve color consistency adjustment

[0004] In addition, the existing calibration method only adjusts the display unit as a whole, but the brightness of the three primary colors of each display unit is uneven. Due to the high technical difficulty and complicated implementation methods, the traditional calibration method does not perform local adjustment on the display unit.

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