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Method and device for detecting defects

A defect detection and defect technology, which is applied in image data processing, instruments, calculations, etc., can solve the problems of high cost, strong subjectivity of manual detection, and high difficulty of defect identification, so as to improve efficiency and accuracy and avoid manual detection of cover plates Effect of glass surface defects

Inactive Publication Date: 2018-06-29
深圳市亿图视觉自动化技术有限公司
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Problems solved by technology

However, for the surface defect detection of cover glass, due to the complicated detection process and the high difficulty of defect identification, it still relies on manual detection.
However, manual inspection has disadvantages such as strong subjectivity, high cost, easy to cause visual fatigue, low detection efficiency and accuracy, and high-intensity and difficult defect detection can easily cause human eye diseases

Method used

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  • Method and device for detecting defects
  • Method and device for detecting defects
  • Method and device for detecting defects

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Embodiment Construction

[0023] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0024] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other features. , whole, step, operation, element, component and / or the presence or addition of a collection thereof.

[0025] It should also be und...

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Abstract

The invention is suitable for the technical field of defect detection, and provides a method and a device for detecting defects. The method comprises the following steps of obtaining original images;obtaining the image of the to-be-detected area from the original images, wherein the image of the to-be-detected area comprises the defect area; calculating the gray value variance of specified pixelneighborhoods in the image of the to-be-detected area, and obtaining an area variance image, wherein the gray value of the pixel in the area variance image is the gray value variance of specified pixel neighborhoods; if the gray value of the pixel in the area variance image is greater than the pixel with specified threshold value, determining that the area of the pixel is the defect area, and marking the defect area out. The method has the advantages that the artificial detection on the surface defects of the cover plate glass is not needed, and the defect detection efficiency and accurate areimproved.

Description

technical field [0001] The invention belongs to the technical field of defect detection, in particular to a defect detection method and device. Background technique [0002] Today, with the rapid development of science and technology, automated production has gradually matured in some fields. The automated assembly line has greatly improved the production efficiency of products and reduced labor costs. However, for the surface defect detection of the cover glass, due to the complicated detection process and the high difficulty of defect identification, it still relies on manual detection. However, manual inspection has disadvantages such as strong subjectivity, high cost, prone to visual fatigue, low detection efficiency and accuracy, and high-intensity and difficult defect detection can easily cause human eye diseases. [0003] Therefore, it is necessary to propose a new technical solution to solve the above technical problems. Contents of the invention [0004] In view...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/187
CPCG06T7/0002G06T2207/10004G06T2207/30108G06T7/187
Inventor 何岗魏浪段斌谢煜张双诚
Owner 深圳市亿图视觉自动化技术有限公司
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