Defect detection method and device, control device and readable storage medium

A defect detection and defect technology, applied in image data processing, instruments, calculations, etc., can solve problems such as prone to misjudgment, achieve the effect of avoiding misjudgment and improving accuracy

Active Publication Date: 2021-03-02
深圳市泰沃德技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, on the 2D image, the dust on the roller is very similar to the pit defect, and it is easy to misjudgment when using the method in the traditional technology to judge the defect on the surface of the roller

Method used

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  • Defect detection method and device, control device and readable storage medium
  • Defect detection method and device, control device and readable storage medium
  • Defect detection method and device, control device and readable storage medium

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Embodiment Construction

[0050] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0051] The technical solution of the present application and how the technical solution of the present application solves the technical problem will be described in detail below with specific embodiments. The following specific embodiments may be combined with each other, and the same or ...

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Abstract

The invention relates to a defect detection method and device, a control device and a readable storage medium, and the method comprises the steps: determining a reflectivity graph and a Gaussian rategraph of a to-be-detected target according to an obtained image set of the to-be-detected target based on a photometric stereo method; judging whether the to-be-detected target has suspected defects or not according to the reflectivity graph and the Gaussian rate graph; and if the suspected defect exists in the to-be-detected target, determining the type of the suspected defect according to the binarized image corresponding to the to-be-detected target. According to the defect detection method provided by the invention, after it is determined that the suspected defect exists in the to-be-detected target, the type of the suspected defect can be determined through the binary image of the to-be-detected target, that is, dust and pits in the suspected defect can be determined and distinguished, and misjudgment can be avoided.

Description

technical field [0001] The invention relates to the technical field of image detection, in particular to a defect detection method, device, control device and readable storage medium. Background technique [0002] Rollers, also known as drums, are widely used in various transmission and conveying systems such as digital printers, gravure printing machines, paper machines and rotary screen printing machines. Since the production workshop of the roller is not a dust-free workshop, and after the roller is polished, there will be slight grinding marks on the surface. In order to ensure the normal use of the roller, it is necessary to detect whether the roller is defective. Generally, pits and deep scratches on the surface of the roller are regarded as defects of the roller. [0003] In the traditional technology, the 2D image of the roller is obtained, and the defects on the surface of the roller are judged according to the image. However, on the 2D image, the dust on the rol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06T7/0004G06T2207/10004G06T2207/20024G06T2207/30108
Inventor 邹广华张建
Owner 深圳市泰沃德技术有限公司
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