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Display screen uniformity test method and system

A test method and test system technology, applied in the direction of testing optical performance, image data processing, instruments, etc., can solve the problems of inaccurate test results of display screen uniformity, poor display effect, and influence on display screen.

Active Publication Date: 2017-03-15
SHENZHEN TCL NEW-TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the display screen is uniform, the image display effect is better, otherwise, the display effect is poor
[0003] In the prior art, a nine-point test method is usually used to detect the uniformity of the display screen, that is, nine sample points or modules are randomly selected on the display screen for brightness testing. Since the selection of sample points or modules is random, the sample point The selection results will affect the uniformity test results of the display
[0004] The disadvantage of the above technical solution is that the uniformity test results of the display screen are inaccurate

Method used

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  • Display screen uniformity test method and system

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no. 1 example

[0096] see figure 2 , based on the first embodiment of the display screen uniformity test method of the present invention, in the second embodiment of the display screen uniformity test method of the present invention, step S10 includes:

[0097]Step S11, obtaining the change law of the preset pixel value gradually decreasing from the middle of the image to the edge of the image;

[0098] Step S12, generating the image template conforming to the preset pixel value change rule according to the pixel value change rule;

[0099] Step S13, acquiring the size of the image template;

[0100] Step S14, acquiring the display state picture of the display screen to be tested and the size of the display state picture;

[0101] Step S15 , performing scaling processing on the image template according to the size of the image template, the size of the display state picture and the difference algorithm, so as to generate a template image with the same size as the display state picture.

...

no. 1 example to no. 4 example

[0211] Please refer to Figure 22 , based on the first embodiment to the fourth embodiment of the display screen uniformity test system of the present invention, in the fifth embodiment of the display screen uniformity test system of the present invention, the display screen uniformity test system further includes:

[0212] The second calculation module 50 is used to obtain a sample picture with equal pixel values ​​of each pixel, superimpose the sample picture and the template image to obtain a sample sample superimposed picture, and calculate the pixel value mean of the sample superimposed picture;

[0213] A determining module 60, configured to determine the mean value of the pixel values ​​of the sample superimposed picture as the reference mean value.

[0214] Each pixel value on the sample picture is equal. In this embodiment, a display screen with good uniformity can be selected to shoot the display state picture, and the captured picture can be used as the sample pictu...

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Abstract

The present invention discloses a display screen uniformity test method. The method comprises: obtaining a presetting image template and the display state image of a display screen to be tested, and performing zooming processing of the image template to generate a template image having the same size as the display state image; performing the superposition processing of the display state image and the template image to obtain a superposition image, and calculating the pixel value mean of the superposition image; and obtaining a presetting reference mean, comparing the pixel mean with the reference mean, and outputting the uniformity test result of the display screen to be tested according to the comparison result. The present invention further discloses a display screen uniformity test system. According to the technical scheme, the accuracy of the uniformity test result of a display screen is improved.

Description

technical field [0001] The invention relates to the technical field of display screen testing, in particular to a display screen uniformity test method and a display screen uniformity test system. Background technique [0002] The display screen is often used as a display component of a display device such as a TV or a computer, and the brightness uniformity of the display screen reflects the quality of the display screen uniformity. If the display screen is uniform, the image display effect is better, otherwise, the display effect is poor. [0003] In the prior art, a nine-point test method is usually used to detect the uniformity of the display screen, that is, nine sample points or modules are randomly selected on the display screen for brightness testing. Since the selection of sample points or modules is random, the sample point The result of the selection will affect the uniformity test results of the display. [0004] The disadvantage of the above technical solution...

Claims

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Application Information

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IPC IPC(8): G01M11/02G06K9/62G06T3/40G06T5/50
CPCG06T3/40G06T5/50G01M11/02G06V10/758
Inventor 王甜甜韦泽垠谢仁礼
Owner SHENZHEN TCL NEW-TECH CO LTD
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