Colour calibration method of display unit

A display unit, color calibration technology, applied in static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of local adjustment of display units, complicated implementation methods, and inability to truly achieve color consistency adjustment, and achieve color Adjust for consistent effects

Active Publication Date: 2010-06-02
GUANGDONG VTRON TECH CO LTD
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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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  • Colour calibration method of display unit
  • Colour calibration method of display unit

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Embodiment 1

[0017] In this embodiment, the splicing wall is spliced ​​by 3×3 display units, each display unit has a resolution of 1024×768, and the overall resolution of the splicing wall is 3072×2304.

[0018] Such as figure 1 as shown, figure 1 It is a flow chart of the display unit adjustment method in this embodiment. The process is described in detail below:

[0019] Step S1, according to the three primary colors of red, green and blue, each primary color has at most 256 levels of grayscale, and sequentially display solid-color pictures containing a single primary color and a single grayscale on the video wall. Each primary color can contain multiple gray levels, such as 64, 128 or 256 gray levels, but up to 256 gray levels. This embodiment takes 256 levels of gray scale as an example, and each solid color picture has only a single primary color and a single gray scale, so 3×256=768 pictures will be displayed.

[0020] Step S2, taking a picture of a solid color, and establishing ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/02G09G5/06
Inventor 卢如西徐响林
Owner GUANGDONG VTRON TECH CO LTD
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