Method for compensating luminance- and chroma-differences between subareas during LED display screen subarea correction

A technology of LED display and difference compensation, applied in static indicators, instruments, etc., can solve the problems of inconsistent average brightness and chromaticity values, and inconsistent brightness and chromaticity values ​​in the correction zone.

Active Publication Date: 2016-03-16
XIAN NOVASTAR TECH
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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

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  • Method for compensating luminance- and chroma-differences between subareas during LED display screen subarea correction
  • Method for compensating luminance- and chroma-differences between subareas during LED display screen subarea correction
  • Method for compensating luminance- and chroma-differences between subareas during LED display screen subarea correction

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[0017] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] The present invention aims at the inconsistency between the average brightness and chromaticity values ​​of each calibration partition collected and the actual brightness and chromaticity values ​​collected due to factors such as shooting angle, camera distance, and data stability during partition correction in the prior art, so that the display effect of each correction partition after correction is inconsistent. To solve the problem of brightness and chroma difference between the correction partitions according to the fusion area, a method is proposed to make the display effect of each correction partition tend to be consistent after correction.

[0019] Specifically, when acquiring an image for each calibration subregion, a ce...

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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...

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/32
Inventor 袁胜春宗靖国王雨
Owner XIAN NOVASTAR TECH
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