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A liquid crystal screen defect detection method and system based on nearest neighbor algorithm

A defect detection and nearest neighbor technology, which is applied in computing, computer parts, character and pattern recognition, etc., can solve the problems of complex hardware system design and low precision, and achieve the effect of good robustness, high precision and fast speed

Active Publication Date: 2022-02-22
ZHAOQING ZHONGDAO OPTOELECTRONICS EQUIP CORP
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Problems solved by technology

[0005] In order to solve the above problems, and aiming at the disadvantages of complicated hardware system design and low precision, the present invention realizes by taking pictures of the liquid crystal screen, using visual image processing technology, calculating the statistical characteristics of non-defective areas, and using the idea of ​​the nearest neighbor algorithm. LCD screen defect detection

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  • A liquid crystal screen defect detection method and system based on nearest neighbor algorithm
  • A liquid crystal screen defect detection method and system based on nearest neighbor algorithm
  • A liquid crystal screen defect detection method and system based on nearest neighbor algorithm

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[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, not to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.

[0023] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] figure 1 A flowchart showing a liquid crystal screen defect detection method based on the nearest neighbor algorithm according to an embodiment of the present invention. Include the following steps:

[0025] 1. Calculate the corner point information of the image based on the...

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Abstract

The invention provides a liquid crystal screen defect detection method and system based on the nearest neighbor algorithm. The method comprises the following steps: calculating the corner point information of the image according to the collected image of the known non-defective liquid crystal screen; calculating the statistical characteristics of the non-defective corner point position according to the corner point information; Statistical properties, using the nearest neighbor algorithm to calculate the defect position of the screen to be detected. Complete the defect detection of LCD screen. The invention is based on the visual image processing technology, realizes the defect detection of the liquid crystal screen through the nearest neighbor algorithm, and has high precision, fast speed and good robustness.

Description

technical field [0001] The invention relates to the technical field of computer vision detection, in particular to a liquid crystal screen defect detection method and system based on the nearest neighbor algorithm. Background technique [0002] Computer vision technology has the advantages of non-contact, economy, flexibility and integration, and has broad application prospects in the field of industrial testing and online inspection. In the current LCD panel industry, the defect detection of LCD panels is one of the indispensable key steps in quality control. [0003] The most similar solution to the present invention is a method and device for visual inspection of liquid crystal screen defects, which detects defects by calculating the gray value matching degree between the template image and the image to be inspected. For example, Chinese Invention Patent Application No. CN201410546795.6 relates to a method and device for visual detection of liquid crystal screen defects....

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/73G06V10/44G06V10/764G06K9/62
CPCG06T7/0004G06T7/73G06F18/24147
Inventor 左右祥杨义禄关玉萍查世华李波曾磊
Owner ZHAOQING ZHONGDAO OPTOELECTRONICS EQUIP CORP