Method for evaluating washing wear of fabric on basis of machine vision
An evaluation method and machine vision technology, which can be used in instruments, scientific instruments, measuring devices, etc., to solve the problem of measuring the size and unable to accurately calculate the area.
Inactive Publication Date: 2012-06-13
JIANGNAN UNIV
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Problems solved by technology
This method overcomes the error caused by manual measurement of the size of the worn cloth sample and the difficulty of accurately calculating the area when the worn cloth is irregular in shape after washing
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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[0013] According to "AS / NZS 2040.1: 2005 Performance of household electrical appliances-Clothes washing machines Part1: Methods for measuring performance, energy and water consumption" appendix A, B, C requirements to determine the washing test conditions and material specification requirements, formulate the test plan . Among them, each wear cloth is used before washing image 3 The machine vision system shown takes a picture. The worn cloth samples were washed and dried naturally, and ironed with an iron before use image 3 The machine vision system shown takes a picture. Assuming that the worn cloth before washing is an ideal model, the length and width of the initial sample are both 10 cm, which is a square with an area of 10,000 square millimeters. Images were collected and segmented from the worn cloth samples before washing. Assume that the gray value of the pixel in the sample area is 1, and the gray value of the pixel in the non-sample area is 0. Then the numbe...
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 method for evaluating the washing wear of a fabric on the basis of the machine vision, aiming at realizing accurate and objective evaluation of the washing wear of the fabric in the washing process. The method for evaluating the washing wear of the fabric on the basis of the machine vision is realized by cooperation of a hardware part and a software part. The hardware part can be used for realizing high precision acquisition of worn fabric sample images. The software part can be used for realizing acquisition, storage and cutting of the actual images, partitioning of the images and calculation of a washing wear evaluation parameter. In the method, the worn fabric is respectively shot before and after being washed; the sizes of the areas of the worn fabric in the worn fabric sample images before and after the worn fabric is washed are calculated; and the area change rate, i.e. a wear value, is calculated and is used for evaluating the washing wear seriousness as the parameter. Due to the adoption of the method, the difficulties that under the condition that the worn fabric is of an irregular shape after being washed, when a manual method is adopted, an error is brought to the size measurement of a worn fabric sample and the area cannot be accurately calculated are solved.
Description
technical field [0001] The invention relates to a method for evaluating fabric washing wear based on machine vision, which can be used to accurately calculate "AS / NZS2040.1: 2005 Performance of household electrical appliances-Clothes washing machines Part 1: Methods for measuring performance, energy and water The area of the irregularly shaped fabric wear cloth after washing specified in Appendix G of "consumption", and then calculate the washing wear evaluation index washing wear value. Compared with the manual measurement method commonly used by washing machine manufacturers, the method proposed by the invention is more objective and accurate, and can effectively reduce test errors. Background technique [0002] Fabric washing wear evaluation is a performance evaluation method for measuring the strength of the washing machine's cleaning effect on fabrics through an accelerated wear test. The wear value of the evaluation index can reflect the wear of the fabric during the...
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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IPC IPC(8): G01N21/84
Inventor 刘建立王蕾高卫东王鸿博
Owner JIANGNAN UNIV