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Image analysis based method for evaluating colorfastness to washing of colored woven cloth

A technology for color fastness and yarn-dyed weaving, which is applied in the analysis of materials, material analysis by optical means, and color/spectral property measurement, etc. It can solve the problem of objective and accurate evaluation of color fastness to soaping, which is troublesome for yarn-dyed weaving, and cannot reflect local conditions. Problems such as fading of details and inability to achieve global measurement of yarn-dyed fabrics

Inactive Publication Date: 2012-07-04
JIANGNAN UNIV
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Problems solved by technology

However, in existing instruments for testing whiteness and K / S values, only local points of yarn-dyed fabrics can be measured, and the overall measurement of the entire piece of yarn-dyed fabric cannot be realized. The test results cannot reflect that the yarn-dyed fabric is washed. Fading of local details during the process
[0003] In addition, because of the complex colors of yarn-dyed fabrics, the objective and accurate evaluation of color fastness to soaping has always been a bottleneck problem that plagues yarn-dyed weaving technology.

Method used

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  • Image analysis based method for evaluating colorfastness to washing of colored woven cloth
  • Image analysis based method for evaluating colorfastness to washing of colored woven cloth
  • Image analysis based method for evaluating colorfastness to washing of colored woven cloth

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Embodiment Construction

[0013] According to the requirements in GB / T3921-2008, when the sample is a fabric, prepare a combined sample according to the following method: take a piece of yarn-dyed fabric sample with a size of 100 mm × 40 mm, and a piece of pure cotton fiber with a size of 100 mm × 40 mm on the front The white facing fabric touches and is stitched along one short edge. In this example, in order to simulate the real laundry fading environment and ensure the stability of the test, five samples were washed at one time with a domestic rolling washing machine. For example, using figure 1 Shown hardware fits figure 2 The shown software takes pictures of the yarn-dyed fabric samples dried before and after washing, and calculates the gray value I of the sample images before and after washing. b and I a . According to the principle of image analysis, it can be seen that the color of the sample fades after washing, the color becomes lighter, and its gray value becomes larger. Therefore, the...

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Abstract

The invention relates to an image analysis based method for evaluating colorfastness to washing of colored woven cloth, which is used for wholly, finely and objectively evaluating the colorfastness to washing of colored woven cloth with complicated color patterning. The image analysis based method for evaluating colorfastness to washing of the colored woven cloth is realized through the collaboration of a hardware part and a software part, wherein the hardware part can be used for obtaining images of the colored woven cloth, and mainly comprises an industrial video assembly (1), a light source (2), a light source controller (3), a host computer (4), a display (5), a data transmission conducting wire (6) and a sample table (7) used for installing the industrial video assembly and the light source; and the software part can be used for obtaining, storing and cutting the actual images, counting the grayness characteristics, and assessing the grade of colorfastness to washing of the colored woven cloth and the staining grade of a purified cotton fiber white adjacent sample.

Description

technical field [0001] The present invention relates to a method for evaluating the color fastness to soaping of yarn-dyed fabrics based on image analysis. Compared with ISO 105C10: 2006 "Tests for Color Fastness of Yarn-dyed Fabrics Part C10: Resistance to Soap or Soap and Soda Washing "Color Fastness" and GB / T 3921-2008 "Color Fastness Test of Yarn-dyed Fabrics to Soaping Color Fastness" stipulates that based on the gray sample card or instrument, compared with the original sample, the fading of the sample and the quality of the adjacent fabric are evaluated. Compared with the staining method, the method proposed by the invention is more objective and accurate, and can effectively reduce the error caused by subjective judgment. Background technique [0002] Yarn-dyed fabric is interwoven with two or more dyed warp and weft yarns, and is widely used in clothing and decoration. The evaluation of color fastness to soaping is an important part of the quality evaluation of yar...

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): G01N21/27G01N21/956
Inventor 刘建立
Owner JIANGNAN UNIV
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