Correction method for light point position deviation among monochromatic images and application thereof

Abstract

The invention relates to a correction method for light point position deviation among monochromatic images. Aiming for the spatial position deviation of a light point position among the monochromatic images in the process of a large vision angle point interlaced collection, the correction method disclosed by the invention comprises steps of taking one collected monochromatic image of a plurality of same-color monochromatic images as a reference monochromatic image, and performing light point position deviation correction on the rest monochromatic images by taking a center coordinate collection value of a plurality of light points positioned in the reference monochromatic image as a benchmark. As a result, the correction method for the light point position deviation among monochromatic images can reduce or eliminate the light point position deviation among the images which is generated by shaking of the camera, shielding on the camera or the screen body and the light interference of non-static environment. Besides, the camera utilizing the large vision angle to collect and correct has a large view field, which avoids the frequency moving of angles of the camera lens and thus saves substantial correction time. Besides, the invention also brings forwards a display screen light-dark line determination method and uniformity correction method which apply the correction method for the light point position deviation among monochromatic images.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for correcting positional deviations of light points between monochrome images and an application thereof. Background technique [0002] In recent years, the development of LED display manufacturing industry at home and abroad has gradually tended to small pitch, ultra-large resolution, and multi-batch. These development trends also directly determine the LED display calibration industry to make corresponding adjustments, and the common Mixing of multiple batches of lamp points, lamp panel modules, and cabinets has always been a traditional problem to be solved by calibration, so small pitch and ultra-large resolution have become new challenges for calibration. The so-called small pitch refers to the smaller pitch of LED lights, such as P1.5 (pixel pitch 1.5mm), P2 (pixel pitch 2mm), etc. The ever-shrinking LED spacing means that the LED display will go from outdoors t...

AI Technical Summary

Problems solved by technology

[0006] Therefore, based on the defects of the large viewing angle and point-by-point acquisition method in the prior art, the present invention proposes a method for correcting the position deviation of light points between monochrome images and its application, so as to solve the problem of monochrome images caused by camera shake to a certain extent. The problem of space position deviation between light points, so that the large viewing angle interval point acquisition method can be more efficiently and accurately applied to the uniformity correction of the display screen

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