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Test method and test system for display roughness of display

A detection method and detection system technology, applied in static indicators, instruments, etc., can solve problems such as image roughness, display imaging difference, distortion, etc., and achieve the effects of small impact, strong heat dissipation, and long life.

Active Publication Date: 2016-01-27
SHANGHAI VISTEON AUTOMOTIVE ELECTRONICS SYST
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Problems solved by technology

[0006] 3. It is precisely because of the difference in imaging mechanism and principle that the imaging difference between the two displays is caused
[0007] After in-depth research, it is found that after the original image is subjected to optical processing such as magnification and reflection, the shape of the original pixel is distorted, and the image becomes rough

Method used

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  • Test method and test system for display roughness of display
  • Test method and test system for display roughness of display
  • Test method and test system for display roughness of display

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Embodiment Construction

[0035] Such as figure 1 As shown, a display roughness detection method of a display, the method comprising:

[0036] S110. Select a plurality of areas on the white standard test image by an optical measuring instrument to perform optical consistency verification. If the optical consistency difference of the plurality of areas is greater than or equal to a threshold value, select a plurality of areas on the white standard test image again until the The optical identity of multiple regions is the same, that is, the difference in optical identity is less than a threshold value, which is 4.5%-5.5%;

[0037] Among them, the optical measuring instrument is an optical measuring instrument from Technoteam in Germany.

[0038] Roughness refers to the distortion of the pixel shape of the original image after optical processing such as magnification and reflection, which leads to the roughness of the image visually. The optical consistency reflects the effect of the backlight of the di...

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Abstract

A test method for display roughness of a display comprises: selecting multiple regions from a white standard test image by an optical instrument to perform optical consistency verification, if the difference of optical consistency of the multiple regions being more than or equal to a threshold value, selecting other multiple regions from the white standard test image again until the optical consistency of the multiple regions being the same, namely the difference of optical consistency of the multiple regions being less than the threshold value; selecting one test point in each region from the multiple regions of the same optical consistency; in a set backlight situation, using the white standard test image as a display background, testing the luminance value of each test point; calculating the luminance standard deviation sigma and the luminance average value mu of the multiple test points based on the luminance value of each test point; and calculating the roughness Grain based on the following formula. By use of the test method and the test system, the roughness can be tested conveniently, effectively and quickly. With low cost and high reliability, the test method and the test system can be used to measure the display effect of a projection type display.

Description

technical field [0001] The invention belongs to the technical field of display effect measurement of a display, and in particular relates to a display roughness detection method of a display and a detection system thereof. Background technique [0002] Usually we evaluate the display effect of the display by the visual range of the screen, resolution, pixel pitch, brightness, color, refresh rate, etc. These measurement indicators can comprehensively and objectively judge the characteristics of ordinary liquid crystal display, CRT and rear projection display products. [0003] However, when developing a new projection display, it was found that the previous measurement items could not objectively evaluate the display effect of the projection display: [0004] 1. The projection display reflects the image to the human eye through two reflections. Unlike the real image directly produced on the original display, the image of the projection display seen by the human eye is actua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/00
Inventor 朱珉辉
Owner SHANGHAI VISTEON AUTOMOTIVE ELECTRONICS SYST
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