Method for online detection of chromatic aberration of warp knitted cloth

A detection method and cloth technology, which is applied in the field of online detection of warp-knitted cloth color difference, can solve the problems of inability to intuitively and accurately reflect cloth color difference, visual color difference cannot realize online detection, etc., and achieve the effect of reducing image size and reducing image noise
CN110672209APending Publication Date: 2020-01-10福建屹立智能化科技有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
福建屹立智能化科技有限公司
Publication Date
2020-01-10

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Abstract

The invention relates to the technical field of weaving, and provides a method for online detection of chromatic aberration of warp knitted cloth, comprising the following steps: setting an encoder, so that the encoder generates a trigger signal as the warp knitted cloth is transmitted; acquiring an image of the warp knitted cloth in real time through a color line scan camera; processing the imageto obtain a standard color image and a histogram cross method standard picture; dividing the image into multiple sub-pictures, and calculating chromatic aberration values between the multiple sub-pictures and the standard color image; dividing the image of the warp knitted cloth into N * N sub-pictures; calculating Bhattacharyya distance values of the chromatic aberration between the N * N sub-pictures and the histogram cross method standard picture, judging whether the chromatic aberration exists, and calculating pass rates of the sub-pictures. The method provided by the invention can realize the online detection of the chromatic aberration, and involves both the overall chromatic aberration pass rate of the cloth and the chromatic aberration fluctuation of the cloth, thereby intuitivelyand accurately reflecting the chromatic aberration of the whole cloth.
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Description

technical field

[0001] The invention relates to the technical field of weaving, in particular to an online detection method for color difference of warp knitted cloth. Background technique

[0002] Color difference is an important indicator for evaluating the quality of warp knitted fabric grades, which directly affects the grades of products. At this stage, most domestic shoe and apparel companies use manual sampling to judge the color difference of cloth. This method is not only labor-intensive, but also has a high false detection rate. In recent years, with the development of machine vision technology, using machines instead of human eyes for color difference detection is a new way to improve the efficiency of color difference detection and reduce costs. The core of the machine vision color difference detection method is the calculation of the color difference. However, the detection accuracy of the existing machine vision color difference detection is not enough, and i...

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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