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Screen ghosting detection positioning method and device

A positioning device and screen technology, which is applied in nonlinear optics, instruments, optics, etc., can solve problems such as low accuracy of screen afterimages and inaccurate positioning, and achieve the effects of improving method efficiency, improving accuracy, and avoiding subjective misjudgment

Pending Publication Date: 2022-03-04
WUHAN ZHONGHAITING DATA TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low accuracy and inaccurate positioning in the existing screen residual detection, the first aspect of the present invention provides a screen residual detection and positioning method, including: preheating the screen to be tested; Checkerboard images and grayscale images sequentially output by the screen within the first preset time; extract multiple frames of checkerboard images within the second preset time, extract the corner coordinates in each frame of images, and determine each black and white image based on them The position of the block; according to the average gray value and duration of each black and white block in each frame of the image, it is judged whether there is afterimage on the screen to be tested

Method used

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  • Screen ghosting detection positioning method and device
  • Screen ghosting detection positioning method and device
  • Screen ghosting detection positioning method and device

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Embodiment 2

[0034] refer to Figure 5 , the second aspect of the present invention provides a screen residual image detection and positioning device 1, including: a prediction module 11, used to preheat the screen to be tested; a collection module 12, used to collect the screen to be tested in the first preset Checkerboard images and grayscale images that are sequentially output within the time; Extraction module 13, used to extract multiple frames of checkerboard images within the second preset time, extract the corner point coordinates in each frame of images, and determine each black and white image according to it The position of the block; the judging module 14 is used to judge whether there is afterimage on the screen to be tested according to the average gray value and duration of each black and white block in each frame of image.

[0035] Further, the extraction module 13 includes a search unit and a judgment unit, the search unit is used to find the position coordinates of all co...

Embodiment 3

[0037] refer to Figure 6 , the third aspect of the present invention provides an electronic device, including: one or more processors; storage means for storing one or more programs, when the one or more programs are used by the one or more executed by one or more processors, so that the one or more processors implement the method of the first aspect of the present invention.

[0038] The electronic device 500 may include a processing device (such as a central processing unit, a graphics processing unit, etc.) 501, which may be loaded into a random access memory (RAM) 503 according to a program stored in a read-only memory (ROM) 502 or loaded from a storage device 508 Various appropriate actions and processing are performed by the program. In the RAM 503, various programs and data necessary for the operation of the electronic device 500 are also stored. The processing device 501 , ROM 502 and RAM 503 are connected to each other through a bus 504 . An input / output (I / O) int...

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Abstract

The invention relates to a method and a device for detecting and positioning screen ghosting. The method comprises the following steps: preheating a screen to be detected; collecting a checkerboard image and a grayscale image which are sequentially output by the to-be-tested screen within a first preset time; extracting multiple frames of checkerboard images within a second preset time, extracting angular point coordinates in each frame of image, and determining the position of each black and white block according to the angular point coordinates; and according to the average gray value of each black and white block in each frame of image and the duration time, judging whether the to-be-detected screen has a ghost shadow or not. The positions of the checkerboard black and white blocks are positioned by using the angular point method, and the problem of inaccurate ghosting positioning caused by relative position change of the screen and the ghosting detection camera in the prior art is solved.

Description

technical field [0001] The invention belongs to the technical field of screen detection, and in particular relates to a method and a device for detecting and positioning screen afterimages. Background technique [0002] Liquid crystal displays are small in size, easy to carry, low in radiation, low in power consumption, and high in reliability. They are widely used in portable electronic products such as smartphones, tablets, and laptops. In recent years, people have new requirements for the quality of liquid crystal displays, such as higher definition, faster response sensitivity, and better visual comfort. Image sticking is a major problem affecting the quality of thin film transistor displays (LCD, OLED). [0003] In the prior art, when the display screen stays on a screen for a long time or does not preheat, the charged particles in the liquid crystal in the display screen will be adsorbed on both ends of the upper and lower glass to form a built-in electric field. If ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13
CPCG02F1/1309
Inventor 徐怡森
Owner WUHAN ZHONGHAITING DATA TECH CO LTD
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