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Microcrack detection method, device and system and storage medium

A detection method and micro-crack technology, which is applied in image data processing, instrumentation, calculation, etc., can solve the problems of automatic detection of openings, etc., and achieve the effect of high degree of automation, wide application scenarios and application value, and elimination of discrete interference

Active Publication Date: 2021-12-21
CASI VISION TECH (BEIJING) CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of this, the purpose of this application is to provide a micro-crack detection method, device, system and storage medium to solve the problem in the prior art of how to quickly and efficiently detect micro-cracks in openings automatically

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  • Microcrack detection method, device and system and storage medium
  • Microcrack detection method, device and system and storage medium
  • Microcrack detection method, device and system and storage medium

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Embodiment Construction

[0079] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without...

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Abstract

The invention provides a microcrack detection method, device and system and a storage medium, and the method comprises the steps: carrying out polar coordinate transformation on a target circular ring detection region image, and obtaining a rectangular detection image corresponding to the target circular ring detection region image; performing transverse edge filtering on the rectangular detection image to obtain an edge filtering image; segmenting the edge filtering image into a plurality of detection blocks according to a preset detection block size; searching for candidate defect points in each detection block, and calculating defect information of a defect area formed by the candidate defect points; according to the defect information of each defect area, determining a to-be-selected area and neighborhood information corresponding to the to-be-selected area on the rectangular detection image so as to determine microcrack defects in the rectangular detection image; and finally, performing polar coordinate inverse transformation on the defect information of the microcrack defects. According to the microcrack detection method provided by the invention, the circular ring detection area can be accurately extracted under a complex background, the microcrack defects are highlighted, and the influence of discrete interference is eliminated.

Description

technical field [0001] The present application relates to the field of machine vision, in particular, to a method, device, system and storage medium for detecting micro-cracks. Background technique [0002] The quality control of the opening of the product after OLED module bonding is a key link in the module bonding process. If cracks occur during the bonding process, the product will be scrapped directly. If it is not detected in time If it goes out and enters other downstream processes, it will further waste resources and manpower. Since the crack defects in the holes are only less than 30 microns in width, manual labor can only be seen under a microscope. If each piece is artificially Full inspection cannot guarantee shipments, and the efficiency of manual inspection is low, making it impossible to intercept defects in this link in a timely manner. Therefore, it is very important to automatically detect and promptly flow out defect samples through AOI (Automated Optical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/12G06T7/13G06T5/30G06T5/50
CPCG06T7/0004G06T7/12G06T7/13G06T5/30G06T5/50G06T2207/20024G06T2207/20036G06T2207/20221G06T2207/30148
Inventor 王南南
Owner CASI VISION TECH (BEIJING) CO LTD
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