Method and system for detecting screen dead pixel based on camera

Abstract

The invention discloses a method and a system for detecting a screen dead pixel based on a camera. The method comprises: obtaining a test image of a screen in a test scene and sending the test image to a computer by a camera; calculating an average brightness of the received test image and generating a preset threshold by a computer; and obtaining the number of the dead pixels in the current screen and recording the positions of the dead pixels after the values of the pixel points in the test image are compared with the preset threshold one by one. The camera is utilized to collect image information of the screen in different test scenes, the computer judges the dead pixels existing in the current screen and the positions of the dead pixels, and the fussy work is controlled by the computer, so that the feasibility is strong, the cost is low, the detecting speed and the detecting efficiency are improved, the manual work pressure is reduced, and convenience is provided for screen automatic production.

Description

technical field [0001] The invention relates to the technical field of display device manufacturing, in particular to a camera-based screen dead point detection method and detection system. Background technique [0002] Nowadays, the TV industry is developing rapidly with each passing day. With the advancement of TV technology, the size of TV screens has become larger and larger. Now the world's largest LED screen has reached 120 inches, and the size of mainstream TV screens is also getting larger and larger. Now the mainstream TV screen has developed from the previous 32 inches to the current 42 inches or even larger, and the definition has also developed from high definition to ultra high definition. As the size and definition of screens increase, it is inevitable that the technical difficulty of producing glass will become higher and higher, which means that the yield of glass will decrease and the rate of glass defects will increase. The result of this is that the proba...

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a camera-based screen dead point detection method and detection system, aiming to solve the problem that TV screens in the prior art tend to have dead points as the size changes, and the existing dead points Detect defects that are manually detected, costly and difficult to implement

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