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A capsule head defect detection method

A defect detection and capsule technology, applied in the direction of optical defect/defect test, image analysis, instrument, etc., can solve the problems of high cost and low efficiency, and achieve the effect of improving accuracy

Active Publication Date: 2018-08-03
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This manual detection method has low efficiency and high cost, and is far behind the pace of fast and efficient modern industrial production.

Method used

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  • A capsule head defect detection method
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  • A capsule head defect detection method

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Embodiment Construction

[0032] In order to make the objects and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] Such as Figure 1-6 As shown, the embodiment of the present invention provides a capsule head defect detection method, including the following steps:

[0034] S1, select a threshold, and binarize the RGB color image of the capsule head to obtain a binarized image;

[0035] S2. Determine and intercept the spot area;

[0036] S3. To extract the boundary of the binary image of the capsule head, various edge detection methods such as Sobel and Robert can be used;

[0037] S4, ellipse fitting binarized image boundary;

[0038] S41. Accumulate the number of pixels of each extracted boundary;

[0039] S42, keep the two longest boundaries, a...

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Abstract

The invention discloses a defect detection method of a capsule head, which uses the shape of an annular light spot reflected on the capsule head to judge whether there is a defect in the capsule head. Firstly, the image is binarized, and the binary image of the spot area is extracted, and then the boundary of the binary image obtained by ellipse fitting is used to calculate the number of error points and the corresponding features such as perimeter and area to judge whether the capsule head is defective. The capsule head defect detection method proposed by the invention has simple algorithm and high detection accuracy.

Description

technical field [0001] The invention relates to the field of defect detection of a capsule head, in particular to a method for detecting a defect of a capsule head. Background technique [0002] At present, for the detection of capsule surface defects, major domestic pharmaceutical manufacturers are still using the method of artificial naked eye observation to find out defective capsules in the production process of capsules. This manual detection method is low in efficiency and high in cost, and is far behind the pace of fast and efficient modern industrial production. With the rapid development of microcomputer technology and image processing technology, computer vision inspection gradually meets the inspection requirements of today's pharmaceutical production because of its non-contact and pollution-free characteristics. Therefore, computer vision inspection can be applied to capsule defect detection instead of traditional manual inspection. Capsule defect detection is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/88G06T7/00
Inventor 杨悦王琪汪春奇徐鹏志
Owner NORTHEASTERN UNIV LIAONING