Defective needle flaw detection method of circular knitting machine

A defect detection and large circular knitting technology, applied in the field of visual inspection, can solve problems such as weft shrinkage and holes

Active Publication Date: 2017-08-04
HUAQIAO UNIVERSITY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are many types of fabric defects such as broken needles, holes, weft s...

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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  • Defective needle flaw detection method of circular knitting machine
  • Defective needle flaw detection method of circular knitting machine
  • Defective needle flaw detection method of circular knitting machine

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Experimental program
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Embodiment Construction

[0065] like figure 1 As shown, a method for detecting defective needles of a large circular knitting machine in the present invention is realized on the following hardware carriers: high-quality image acquisition equipment, a control terminal and a large circular knitting machine. The camera and light source are integrated into an image acquisition device and mounted inside the circular knitting machine. The camera captures fabric images and feeds them back to the control terminal for fabric defect detection.

[0066] Due to the high resolution of the sensor of the line scan camera itself and the pre-calibration of the light source to achieve accurate high-resolution image acquisition, the line scan camera can be selected.

[0067] like figure 2 Shown, a kind of bad needle flaw detection method of large circular knitting machine of the present invention specifically comprises the following steps:

[0068] Step 1, collect the fabric image in real time through the image acqui...

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 relates to a defective needle flaw detection method of a circular knitting machine. With a machine learning method, detection on a defective needle flaw of the fabric can be realized; pretreatment of a flaw image is carried out by using an adaptive image enhancement technique and an area of interest is segmented; and feature information of a fabric flaw is extracted effectively according to a multi-scale pyramid method with consistent phases. In terms of fabric flaw classification and identification, a fabric defective needle flaw is detected successfully by using hypergraph regularization attribute learning. Therefore, the fabric flaw detection speed and efficiency can be improved substantially.

Description

technical field [0001] The invention relates to a visual detection method, which is mainly suitable for real-time detection of cloth in textile equipment, and in particular to a detection method for defective needles of large circular knitting machines. Background technique [0002] The research on the automatic detection of fabric defects in my country has not yet had a relatively mature commercial application of the automatic detection system for fabrics. The research on defect recognition is still mainly in the theoretical stage. In this regard, the domestic fabric automatic detection system needs to be developed towards practicality and commercialization. A wide variety of fabric defects such as broken needles, holes, shrinkage etc. cause huge problems for factories to produce quality fabrics. Therefore, a feasible fabric defect detection method is needed to improve the production efficiency and quality of fabrics. Contents of the invention [0003] The purpose of t...

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): G06T7/00G06T5/00
Inventor 黄德天顾培婷柳培忠黄炜钦骆炎民洪铭
Owner HUAQIAO UNIVERSITY
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