An identification method and identification device for abnormal display on a display screen

Abstract

The present invention provides an identification method and identification device for abnormal display on a display screen. The method includes obtaining the brightness value of a light point in a single primary color original brightness map of the display screen; , it is determined that the light point is an abnormal light point; when the characteristics of the connected domain in the single primary color original brightness map meet the preset characteristics of the abnormally connected domain, it is determined that the connected domain is an abnormal connected domain; according to the abnormal connected domain, extract and record The position, size and color of the abnormal region displayed in the single primary color original luminance image. The device includes: a module for obtaining brightness values ​​of light points, a module for judging the state of light points, a module for judging the state of connected domains, and a module for identifying abnormal display areas. The identification method and identification device provided by the present invention can quickly and accurately identify and correct the abnormal display area on the display screen, and can effectively solve the color shift phenomenon that occurs after the display abnormality is corrected on the display screen.

Description

technical field [0001] The invention relates to the field of display screens, in particular to an identification method and an identification device for abnormal display on a display screen. Background technique [0002] Abnormal phenomena are often displayed on the display screen. In the display screen, if a failure of one light point causes the failure of an adjacent string of light points, an abnormal display phenomenon will appear on the screen. This abnormal display phenomenon is commonly known as a caterpillar in the industry. Since the position where there are caterpillars will have one or more colors of lights displayed as highlighted when red, green and blue are displayed, the correction coefficient for the caterpillar position will be too large due to the small data collected during calibration. After correction When the display position is white, there is a problem of color cast, so that the correction effect on the display screen is not good. [0003] At present...

AI Technical Summary

Problems solved by technology

Since the position where there are caterpillars will have one or more colors of lights displayed as highlighted when red, green and blue are displayed, the correction coefficient for the caterpillar position will be too large due to the small data collected during calibration. After correction There is a problem of color cast when the display position is white, which makes the correction effect of the display screen not good

[0003] At present, there are two ways to deal with caterpillars on the display that needs to be corrected. The first is to repair the hardware of the display with caterpillars before calibration, and then perform calibration after the caterpillar phenomenon is repaired. The second is for The display screen with caterpillars is calibrated first, and then repaired by adjusting the correction coefficient. The first solution is to repair the hardware of the screen with caterpillars before calibration, and then perform calibration after the caterpillar phenomenon is repaired. Hardware maintenance takes a long time. Requires professional maintenance technicians to complete

The second solution is to calibrate the screen body with caterpillars first, and then repair it by adjusting the correction coefficient. This method takes a long time and requires high ability of on-site technicians, and hardware support is required when adjusting the coefficient, so that the video signal do point to point

[0004] In the prior art, there is no effective means to identify the caterpillars on the display, and it is impossible to quickly and accurately identify the position, size and color of the caterpillars on the display. Calibration difficulty

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