Compensation method for brightness and chromaticity differences between partitions in LED display partition calibration

Abstract

The invention relates to a method for compensating luminance- and chroma-differences between subareas during LED display screen subarea correction. According to the method, the luminance values and the chroma values of various subareas can be adjusted according to an integrated area (or a public area), and the differences between corrected subareas can be retained, and therefore the display effects of various corrected subareas tend to be uniform, and then the problem of different display effects of various corrected subareas caused by the difference between the luminance mean value and the chroma mean value of the subareas and the actual luminance value and the actual chroma value, which is caused by the shooting angle, the camera distance, the data stability, and other factors, can be solved.

Description

technical field [0001] The invention relates to the technical field of LED display screen correction, in particular to a method for compensating brightness and chromaticity differences between partitions in partition calibration of LED display screens. Background technique [0002] Since the 21st century, the color display industry has developed unprecedentedly, and LED display screens have spread almost all over the central squares and commercial buildings in all cities. LED display is highly praised by people for its unique advantages of bright colors, high visibility, and low power consumption. However, due to the relatively low level of LED display manufacturing technology, the produced LED lights themselves have relatively large brightness and chromaticity. Differences (for example, the brightness of the same production batch of LEDs may vary by nearly 50%, and the chromaticity may vary by 15-20nm), and the brightness and chromaticity differences of multiple different p...

AI Technical Summary

Problems solved by technology

[0005] In the process of partition calibration, there are usually the following problems: due to factors such as shooting angle, camera distance, data stability, etc., even if the average brightness and chromaticity values ​​of each calibration partition are actually consistent, the collected brightness and chromaticity values ​​may also be inconsistent.

However, if the average brightness and chromaticity values ​​of each calibration partition are actually inconsistent, it will be problematic to normalize the brightness and chromaticity of each calibration partition to be consistent.

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