Method for correcting brightness and chrominance of LED display screen and mobile communication terminal

Abstract

The invention provides a method for correcting the brightness and the chrominance of an LED display screen and a mobile communication terminal used by the same. According to the method, correction software is installed in the mobile communication terminal and sends, after a connection is established between the mobile communication terminal and an LED display screen control system, a command to the LED display screen control system in order to control the LED display screen to display frames, such as a color frame for imaging quality analysis, a color frame for correction and the like; and a camera module of the mobile communication terminal captures displayed frames and sends images of the captured frames to the correction software to be processed in order that the exposure of the camera module is adjusted and a brightness and chrominance correction coefficient of the LED display screen is generated. The method may correct the brightness and the chrominance of the LED display screen by using the mobile communication terminal such as a cell phone, prevents a user of the LED display screen from extra purchasing expensive correction equipment, and has advantages of good convenience in use, short correction time, and high efficiency.

Description

technical field [0001] The invention relates to the technical field of display correction, in particular to a method for correcting brightness and chromaticity of an LED display screen and a mobile communication terminal. Background technique [0002] At present, in some areas of the country, small full-color LED advertising screens are installed in the glass windows of shops, pharmacies, clothing stores, etc. Most of them have more than 100 pixels in the horizontal direction and 200 to 300 pixels in the vertical direction. The LED display screen is used to play advertisements (such as events, promotions, etc.) of the store, pharmacy or clothing store where it is located, or advertisements of other manufacturers (to charge some advertising fees). Similarly, there will be similar small LED displays at the entrances of some hotels, restaurants, and shops in European and American countries, with a size of about 256*256 pixels. After a period of use, these LED displays will exp...

AI Technical Summary

Problems solved by technology

[0005] (1) Calibration equipment in the prior art is generally expensive, ranging from 100,000 to 200,000 yuan; therefore, for small LED display users, such as pharmacies and clothing stores, the investment is too large to afford;

[0006] (2) The structure of the existing technology is relatively complicated, requiring operators to have a relatively professional understanding of calibration computers, professional cameras, network connections, etc., and also requires the calibration manufacturer to provide comprehensive training to users;

[0007] (3) The time for setting up equipment and connecting to the network in the existing technology will be much longer than the actual correction time, which reduces the efficiency;

[0008] (4) Because the calibration equipment needs a certain site support, there is a problem that it is impossible to find a suitable site or angle to calibrate the LED display in some cases

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