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Method for detecting fabric defects by using computer

A computer and defect technology, used in the textile industry, can solve the problems of low defect detection accuracy, difficulty in solving image interference, and difficulty in applying complex background color fabric detection, etc., to achieve the effect of high defect detection accuracy.

Active Publication Date: 2015-06-17
张莹莹
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AI Technical Summary

Problems solved by technology

[0004] The above method has laid a foundation for the application of computer vision in fabric detection, but the above detection methods are all based on two-dimensional image processing, and there are many problems: (1) it is difficult to solve the image interference caused by "ambient light background light change"; (2) Most fabric defect detection methods can only be applied to the detection of plain fabric defects, and it is difficult to apply to the detection of complex background color fabrics; (3) The overall defect detection accuracy is not high

Method used

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  • Method for detecting fabric defects by using computer
  • Method for detecting fabric defects by using computer
  • Method for detecting fabric defects by using computer

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Experimental program
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Embodiment Construction

[0032] A high-brightness projector is used to irradiate coded light information, which may be moiré fringes, onto the surface of the fabric to be tested.

[0033] The coded light information is moved three times, and the coded light information is irradiated onto the surface of the fabric to be tested three times from three different angles to obtain three coded images reflected by the surface of the fabric to be tested.

[0034] Acquisition of coded images reflected on the surface of the fabric to be tested is achieved by an image acquisition system. The image acquisition system includes a CCD camera and a computer connected with the camera. The CCD camera collects the image of the surface of the fabric to be tested from another angle, and then transmits it to the computer for data calculation.

[0035] Calculate the space coordinates (x, y, h) of any point (x, y) on the space image of the fabric to be tested according to the preset program. The pre-set programs are calcula...

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Abstract

The invention provides a method for detecting fabric defects by using a computer. The method comprises the following steps: irradiating encoding optical information to a to-be-detected fabric, calculating phase information of each point of the to-be-detected fabric to obtain space coordinate information of the to-be-detected fabric, and reconstructing a three-dimensional image; then judging whether the fabric has defects or defect types according to whether the reconstructed three-dimensional image has curvature discontinuous places and whether x, y and h coordinates change uniformly; and finally, transmitting to a remote terminal, and performing manual verification. The method provided by the invention is not restricted by fabric background colors and measurement environments, can be applied to detection of defects of plain color fabrics and detection of colored fabrics with complex backgrounds, and can obtain relatively good defect detection accuracy under the condition that an optical lighting environment is not good.

Description

technical field [0001] The invention belongs to the field of textile industry, and in particular relates to a method for detecting fabric defects by using a computer. technical background: [0002] The textile industry is a traditional pillar industry of my country's national economy and an important livelihood industry. It is also an industry with obvious comparative advantages in international competition. It plays an important role in prospering the market, expanding exports, creating jobs, increasing farmers' income, and promoting urbanization. To speed up the revitalization of the textile industry, we must focus on independent innovation, technological transformation, elimination of backwardness, and optimization of layout, and continuously promote structural adjustment and industrial upgrading, thereby transforming my country's textile industry from large to strong. Since China's entry into WTO, my country's textile exports have been competing with foreign products at ...

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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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/95G06T7/00
Inventor 张莹莹邵琳孙文
Owner 张莹莹
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