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Acquisition method of standard image in automated optical inspection, and automated optical inspection equipment

An automatic optical inspection and standard image technology, applied in the field of optical inspection, can solve the problems of irregular image inspection, poor inspection effect, inability to accurately detect product defects, etc., to improve the inspection effect.

Active Publication Date: 2018-08-24
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing automatic optical inspection equipment is good for regular image detection, but poor for irregular image detection, and cannot accurately detect product defects

Method used

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  • Acquisition method of standard image in automated optical inspection, and automated optical inspection equipment
  • Acquisition method of standard image in automated optical inspection, and automated optical inspection equipment
  • Acquisition method of standard image in automated optical inspection, and automated optical inspection equipment

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0031] A method for acquiring a standard image in an automatic optical inspection and an automatic optical inspection device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0032] In the existing automatic optical inspection technology, there are mainly two methods for irregular image detection, one is to use the CAD design drawing of the product as the detection standard, and the other is to use the standard image for detection. In the detection method us...

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PUM

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Abstract

The invention discloses an acquisition method of a standard image in automated optical inspection, and automated optical inspection equipment. The method comprises the following steps: continuously acquiring a scanned image of a to-be-inspected object; acquiring the difference between the scanned image and the current standard image; determining whether to update the current standard image according to the difference; and updating the current standard image by using the scanned image if needing to update the current standard image, thereby obtaining the final target standard image. Through themethod disclosed by the invention, the situation that the obtained target standard image is free from defect can be guaranteed, and then a detection effect of performing defect detection by using thetarget standard image can be improved.

Description

technical field [0001] The invention relates to the technical field of optical detection, in particular to a method for acquiring standard images in automatic optical inspection and automatic optical inspection equipment. Background technique [0002] Automated Optical Inspection (AOI) is a non-contact detection method, which is an effective detection method in the field of industrial automation. It uses optical methods to obtain the surface state of products, and detects defects such as foreign objects or abnormal patterns through image processing. It is widely used in abnormal detection of liquid crystal display (Liquid Crystal Display, LCD), thin film transistor (Thin Film Transistor, TFT), transistor and printed circuit board (Printed Circuit Board, PCB) and other products. [0003] The existing automatic optical inspection equipment has a better effect on regular image detection, but poorer effect on irregular image detection, and cannot accurately detect defects in pro...

Claims

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Application Information

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IPC IPC(8): H04N1/04H04N17/00
CPCH04N1/04H04N17/004
Inventor 高鸿飞王志强殷鹏飞马纪艳李明龙
Owner BOE TECH GRP CO LTD
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