Stitching light and dark line correction method

Abstract

The invention relates to a splicing bright and dark line correction method suitable for splicing display screens such as LED display screens. The splicing bright and dark line correction method determines the size of the display bright block and the display dark block according to the size of the splicing unit, and then controls the lighting of the display screen for shooting to obtain a target image; then performs image processing on the target image to obtain a plurality of display bright blocks. Then calculate the display unit spacing and splicing gap spacing; finally use the display unit spacing and splicing gap spacing to calculate the correction coefficient of each edge display unit adjacent to the splicing gap of the splicing unit to correct the error caused by the splicing gap Stitching light and dark lines. By designing the lighting mode of the display unit, the present invention can accurately correct the spliced ​​bright and dark lines only by taking one image; in addition, it can also avoid the uniformity change of the screen introduced by the prior art through full-screen analysis to repair the spliced ​​bright and dark lines. bad question.

Description

technical field [0001] The invention relates to the technical field of display control, in particular to a splicing bright and dark line correction method. Background technique [0002] LED displays are usually spliced ​​by multiple splicing units. Due to the limitations of machining accuracy and assembly accuracy in the splicing process, the splicing between the splicing units is not uniform, resulting in LED lights of the same color on the edge of the splicing. Inconsistent dot spacing. When displaying an image, a dark seam will appear when the spacing is greater than the standard spacing of the light points, and a bright seam will appear when the spacing is smaller than the standard spacing of the light points. dark line. [0003] It is difficult to completely solve the splicing bright and dark lines caused by machining, etc. by improving the precision of machining. The traditional method observes the position of spliced ​​bright and dark lines with human eyes, and man...

AI Technical Summary

Problems solved by technology

[0005] However, for the aforementioned prior art, (a) it needs to take multiple images and then combine them into one. Due to the camera shake in the process of taking the picture, the position of the LED light point will be offset, so the combined image is obtained There is an error in the spacing of the LED lights, and the calculated correction coefficient is not accurate; (b) Since the size of the splicing unit is unknown, as long as the difference in the area of ​​the two LED lights is greater than a certain threshold, it is considered that there is a gap and corrected / corrected, Therefore, the position without splicing gap will also be repaired, resulting in uneven screen body after correction; (c) the larger the LED display screen, the farther the camera is required from the screen body, and a larger spacing point is required at this time (such as K*K) for image capture, so more images need to be captured (K*K); in addition, there is camera shake in the process of capturing images, the image position will be shifted, and the error introduced will be larger

Images