A gap detection method for circular daily-use ceramic devices
A detection method and ceramic technology, applied in the field of image processing, can solve the problems of blank state and expensive equipment of intelligent detection system
Active Publication Date: 2016-11-30
JINGDEZHEN CERAMIC UNIV
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However, due to expensive equipment, most of the ceramic quality inspection devices based on digital image processing technology are only used on some high-precision engineering ceramics, and the intelligent inspection system for daily-use ceramics is almost blank
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[0040] The following describes how to use the entire circular ceramic outer boundary gap detection scheme.
[0041] Place the industrial camera and light source directly above the inspected ceramic device, and then use computer control to obtain pictures of the ceramic boundary. In order to better distinguish the inspected ceramic from the background, white ceramics can be placed on the black production line, as follows Part of the implementation of ceramic boundary gap detection based on extracted images:
[0042] (1) Grayscale the collected color ceramic image to obtain a grayscale image, such as Image 6 shown;
[0043] (2) In view of the obvious difference between the white ceramic and the black background, the grayscale image can be converted into a binary image by using the threshold segmentation technique, such as Figure 7 As shown, the image binarization threshold T is taken in the present invention 1 =170;
[0044] (3) In view of the fact that the present inventi...
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The invention discloses a notch detection method of a domestic circular ceramic device. The notch detection method comprises the following steps: 1, placing an industrial camera and a light source just above a to-be-detected ceramic device, then acquiring an image of a ceramic boundary by using computer control; 2, graying the acquired colorful ceramic image to obtain a gray image; 3, converting the gray image into a binary image by using a threshold segmentation technology; 4, filling an inner boundary in ceramic; 5, extracting an outer boundary of the ceramic, and acquiring coordinates of each point on the outer boundary of the ceramic; 5, constructing a boundary notch detection frame, determining a center of the circular ceramic device, and drawing a radius curve and a radius residual error curve; and 6, positioning a notch and detecting the size. By using a multimedia signal processing technology and a computer vision technology, the invention provides a notch detection method of the domestic circular ceramic device, which is efficient and convenient, and simple and convenient to operate, and is wide in market prospect.
Description
technical field [0001] The invention relates to the technical field of image processing, in particular to a method for detecting a gap of a circular ceramic device for daily use. Background technique [0002] In recent years, with the development of society and the improvement of people's living standards, people's requirements for daily-use ceramics not only stop at simple practical functions, but also pursue appearance characteristics such as elegant shapes and bright colors. At the same time, due to the increase in the amount of daily-use ceramics, the market now not only puts forward new requirements for the quantity of products, but also has stricter standards for the quality of ceramic products. However, due to the low toughness of daily-use ceramic products, the special production process, and the difficulty of quality control during mass production, it is of great significance to conduct quality inspections on ceramic products, especially non-destructive defect detec...
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IPC IPC(8): G01N21/95
Inventor 王俊祥彭华仓张礼标胡鸿豪
Owner JINGDEZHEN CERAMIC UNIV