Liquid crystal display (LCD) detection method and system based on machine vision

A machine vision, to-be-detected technology, applied in the field of electronics, can solve problems such as difficulty in LCD panel detection, and achieve the effect of convenient detection

Inactive Publication Date: 2014-03-19
DALIAN EVERYDAY GOOD ELECTRONICS
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  • Summary
  • Abstract
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Problems solved by technology

The present invention proposes a method and system for LCD detection based on machine vision, which solves the problem of difficult detection of LCD panels

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  • Liquid crystal display (LCD) detection method and system based on machine vision

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the described embodiments are only intended to facilitate the understanding of the present invention, and have no limiting effect on it.

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Such as figure 1 As shown, the present invention provides a machine vision-based LCD detection system, including: dual cameras 1 , industrial computer 2 , LCD driver 3 , LCD 4 , optical fiber 5 and light source 6 . Wherein, the cameras of the dual cameras are CCD cameras, and the resolution of the system can be improved by adopting dual camera inputs. The industrial computer includes an image acquisition card 7PCI-1408 and a parallel port 8, which support multi-channel image acquisition. The back of the LCD is illuminated through the light sour...

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Abstract

The invention provides a liquid crystal display (LCD) detection system which comprises double cameras, an industrial personal computer, an optical fiber and a computer. The industrial personal computer comprises a high speed image collection card and parallel ports and supports multi-way image collection. The optical fiber is used for lighting the back of an LCD panel. The double cameras are used for shooting the LCD panel to obtain an image of a black region. The image of the black region is an LCD panel image, the double cameras transmit the LCD panel image to the industrial personal computer, the industrial personal computer is used for converting the LCD panel image into a digital image and transmiting the digital image to the computer, and the computer conducts binarization processing on the LCD panel image and compares the LCD panel image with a standard image to determine the quality of the LCD panel. The quality of the LCD panel can be detected conveniently.

Description

technical field [0001] The invention belongs to the field of electronics, in particular to a method and system for LCD detection based on machine vision. Background technique [0002] Machine vision is the science and technology that studies the use of computers to simulate biological appearance or macroscopic vision functions. The primary goal of machine vision systems is to use images to create or restore real-world models, and then recognize the real world. Machine vision is the use of machines instead of human eyes for measurement and judgment. The machine vision system refers to converting the ingested target into an image signal through the machine vision product, sending it to the image processing system, and converting it into a digital signal according to the pixel distribution, brightness, color and other information; the image system performs various calculations on these signals. To extract the characteristics of the target, and then control the on-site equipmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13
Inventor 刘建青
Owner DALIAN EVERYDAY GOOD ELECTRONICS
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