A calibration method for LED display based on reference objects

Abstract

The invention relates to a correction method of an LED display screen based on a reference object. The method includes: manufacturing a correction reference object, forming new to-be-corrected displayscreens by a plurality of to-be-corrected display screens and the reference object in sequence, performing independent acquisition and correction on the plurality of new to-be-corrected display screens in sequence, correcting correction coefficients of the plurality of to-be-corrected display screens based on a correction coefficient of the reference object, and regarding the corrected correctioncoefficients as final correction coefficients of the to-be-detected display screens. According to the method, each time of independent correction has the same effective optical reference object, theoptical transfer characteristic is achieved, random splicing of multiple corrected display screens can be realized, the problem of poor splicing effect after single-box correction is solved, the correction efficiency is greatly improved, and the method is applicable to engineering application.

Description

technical field [0001] The invention belongs to the technical field of LED acquisition and correction, and relates to a new method for correcting brightness and chromaticity of an LED display screen. Background technique [0002] With the continuous development of the LED display market, the application requirements of LED displays are also emerging. The existing LED display field has achieved display requirements such as large area, high brightness, and high color gamut, and has become an important carrier of multimedia display. Display quality is an important parameter for the quality of LED display screens, and is the main factor affecting the development of the display field. At present, the display quality of the display screen is mainly improved through the method of acquisition and correction, which mainly uses the acquisition camera to perform point-by-point acquisition and correction of the entire LED display screen, so as to achieve the purpose of improving the di...

AI Technical Summary

Problems solved by technology

However, in the process of independent acquisition and correction, the small-sized display screen has no effective reference object, and its optical characteristics are not transmissive, so that the display screens after independent acquisition and correction each time have the problem of inconsistent display characteristics, which eventually leads to splicing High-density, large-size display screens have obvious optical transition phenomena in units of small-size display screens, which cannot achieve seamless splicing and seriously damage the display effect. It is also the main problem in the realization of single-box calibration

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