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Industrial part size detection method based on machine vision

A size detection and machine vision technology, applied in instruments, measuring devices, image analysis, etc., can solve problems such as high operation difficulty, low part measurement efficiency, and expensive detection system

Inactive Publication Date: 2020-05-22
XI'AN POLYTECHNIC UNIVERSITY
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for detecting the size of industrial parts based on machine vision, which solves the problems of low measurement efficiency and poor accuracy of parts measurement in the traditional technology, and the detection system currently on the market is expensive and difficult to operate.

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  • Industrial part size detection method based on machine vision
  • Industrial part size detection method based on machine vision
  • Industrial part size detection method based on machine vision

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Embodiment Construction

[0069] The present invention will be described in detail below in combination with specific embodiments.

[0070] A kind of industrial part size detection method based on machine vision of the present invention, specifically implement according to the following steps:

[0071] Step 1, utilize image acquisition system to collect image; Wherein, image acquisition system comprises CCD industrial camera; CCD industrial camera, computer, single-chip microcomputer, relay are connected sequentially; Computer is also connected with infrared sensor;

[0072] The infrared sensor is an active infrared sensor;

[0073] The model of the one-chip computer is 89C51 one-chip computer.

[0074] Step 2. Perform median filtering, threshold segmentation, image filling, Canny edge rough extraction, edge fine extraction, and size calibration on the image in order to obtain size data;

[0075] The specific process of median filtering is as follows:

[0076] Using a 3×3 two-dimensional sliding tem...

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Abstract

The invention discloses an industrial part size detection method based on machine vision. The industrial part size detection method is specifically implemented according to the following steps of: 1,acquiring an image by utilizing an image acquisition system; 2, sequentially performing median filtering, threshold segmentation, image filling, Canny edge coarse extraction, edge fine extraction andsize calibration on the image to obtain size data; 3, comparing the detected size data with standard size data, and judging whether the detected size data is within an error range of the standard sizedata; if so, determining that an product is qualified; and if not, determining that the product is unqualified. According to the industrial part size detection method based on machine vision providedby the invention, the problems of low part measurement efficiency and poor accuracy in the traditional technology and the problems of high price and high operation difficulty of a detection system inthe current market are solved.

Description

technical field [0001] The invention belongs to the technical field of machine vision detection, in particular to a method for detecting the size of industrial parts based on machine vision. Background technique [0002] With the continuous development of science and technology, in addition to the development of traditional mechanical parts processing technology in the direction of high precision, high efficiency and high-grade materials, machining automation is also one of the important development directions. Along with the technological upgrading of the entire machining industry is There are higher requirements for the inspection and testing of mechanical products. In traditional mechanical processing, workers are required to judge whether parts are qualified with naked eyes and simple tools. This detection method heavily relies on workers' technical experience and subjectivity. Even skilled workers are prone to fatigue and negligence as the inspection work is repeated, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G06T7/00G06T7/60G06T5/00G06T7/136G06T7/13G06F17/16
CPCG01B11/00G06T7/0004G06T7/60G06T7/136G06T7/13G06F17/16G06T2207/20032G06T5/70
Inventor 张周强王德祥胥光申郭忠超贾江涛
Owner XI'AN POLYTECHNIC UNIVERSITY
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