Warp knitting machine cloth flaw on-line visual inspection method based on Gabor transformation

A visual inspection and warp knitting machine technology, which is applied in the direction of optical testing for flaws/defects, can solve problems such as false detection, easy fatigue, slow speed, etc., and achieve the effect of eliminating large amount of calculation, high real-time performance, and high accuracy

Active Publication Date: 2013-08-07
JIANGNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional manual detection technology is costly, slow, and the human eye is prone to fatigue due to long-term work, resulting in false detection. In this way, the automatic detection technology of fabric defects has emerged as the times require, and has gradually become an urgent problem that restricts the textile level.
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Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Warp knitting machine cloth flaw on-line visual inspection method based on Gabor transformation
  • Warp knitting machine cloth flaw on-line visual inspection method based on Gabor transformation
  • Warp knitting machine cloth flaw on-line visual inspection method based on Gabor transformation

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Embodiment Construction

[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0022] Such as figure 2 Shown is the overall flowchart of the algorithm of the present invention.

[0023] The algorithm is divided into offline testing and online testing process, the specific steps are as follows:

[0024] Offline testing process

[0025] Step 1: Obtain the image of the flawless cloth of the warp knitting machine in real time, take pictures at about 5cm from the cloth outlet of the warp knitting machine, and obtain the image sequence of the warp knitting machine in real time.

[0026] Step 2: Preprocess the acquired flawless cloth image, remove image interference points through Gaussian filtering; stretch the image through histogram equalization, enhance contrast, and highlight image texture.

[002...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides a warp knitting machine cloth flaw on-line visual inspection method comprising Gabor transformation, character extraction, and flaw identification. With the method, warp knitting machine cloth real-time monitoring and machine stopping on detecting flaw can be realized. With the method, defects such as large data calculation amount and information redundancy when traditional Gabor multi-scale decomposition-fusion is used in the field of flaw detection can be solved. Texton cycle is automatically searched, such that window automatic separation can be carried out by the system, characteristic extraction is facilitated, and non-precision caused by different object manual window size input is avoided. With an offline detection algorithm, fast Gabor transformation, fast characteristic extraction and flaw identification can be realized under the guidance of the offline data. Therefore, requirements of high timeliness and high accuracy of warp knitting machine cloth flaw on-line detection can be completely satisfied.

Description

technical field [0001] The invention relates to the field of on-line detection of warp knitting machine defects by using machine vision, and specifically refers to an image processing method for timely shutdown of warp knitting machine cloth with high real-time requirements when defects occur during the weaving process, which is applied to industrial sites. Background technique [0002] Internationally, the requirements for quality testing methods are increasing day by day. Textiles are a necessity in people's daily life, and their quality directly affects people's quality of life. The quality of textiles is reflected in reliability, aesthetics, safety and service life. High-quality textiles can better meet the needs of consumers and society, thereby increasing the value of the textiles. Therefore, in the textile industry, how to ensure the quality of textiles is a very critical link for manufacturers. During the weaving process of the warp knitting machine, due to mechanic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): G01N21/88
Inventor 白瑞林王明景吉峰
Owner JIANGNAN UNIV
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