Method and device for detecting screen scratches

A detection method and screen technology, which can be used in measurement devices, optical testing flaws/defects, image data processing, etc., can solve problems such as inability to detect, and achieve the effect of improving accuracy and realizing automatic detection.

Active Publication Date: 2018-07-13
GOERTEK OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This detection method can only detect defect points on the displ

Method used

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  • Method and device for detecting screen scratches
  • Method and device for detecting screen scratches
  • Method and device for detecting screen scratches

Examples

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Example Embodiment

[0053] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0054] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0055] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0056] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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PUM

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Abstract

The invention discloses a method and a device for detecting screen scratches. The method comprises the following steps of processing an image of a screen so as to obtain the defect points of the screen, wherein the image of the screen is obtained through photographing a light-emitting screen by means of a grayscale camera; determining a first slope of a straight line formed by any two defect points, and an image area comprising the straight line formed by every two defect points; in the image area, acquiring a pixel point in each row or in each column and largest in gray value; carrying out fitting treatment on the pixel point largest in gray value in each row or each column so as to obtain a fitted straight line, and determining a second slope of the fitted straight line; if the difference value between the second slope and the first slope is within a preset slope difference value threshold range, determining that a scratch defect exists in the image area. According to one embodimentof the invention, the automatic detection of screen scratches is realized.

Description

technical field [0001] The present invention relates to the technical field of screen defect detection, and more particularly, to a method and device for detecting screen scratches. Background technique [0002] As an input and output device of a terminal device (for example, a desktop computer, a tablet computer, a smart phone, etc.), the display screen can display electronic files on the screen. Currently, most of the display screens are LED (Light Emitting Diode, Light Emitting Diode) screens or OLED (Organic Light Emitting Diode, Organic Light-Emitting Diode) screens. [0003] When a user watches an electronic file through a display screen, in order to ensure user experience, the display screen must have a relatively good resolution and be free from defects. [0004] At present, in the production process of the display screen, the following two methods are usually used to detect the defects of the screen: [0005] The first method: manual inspection, this method is spe...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06F17/14G01N21/88
CPCG01N21/8851G01N2021/8887G06F17/14G06T7/0002G06T2207/20056
Inventor 宋秀峰
Owner GOERTEK OPTICAL TECH CO LTD
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