Cukurova University,Department of Textile Engineering, Main Branch of Textile Technology

Showing posts with label Pilling grade. Show all posts
Showing posts with label Pilling grade. Show all posts

September 08, 2020

The Relationship Between Subjective Pilling Evaluation Results and Detecting Pills and Textural Features in Knitted Fabrics

The digital image processing studies are used in order to eliminate problems of subjective pilling evaluation. However, these applications did not come to the desired point. The purpose of this research is to put forward with explanations about the reasons for the failures of previous studies in objective pilling evaluation. In this study, three issues were dwelled on. Firstly, data belong to original fabrics (0 turns) were taken into consideration. Secondly, data were standardized using min-max normalization with a feature scaling approach to compare different fabrics. For this process, data after pilling and results belong to original fabrics (0 turns) were taken together. Thirdly, knitted fabrics were separated into different categories according to formed pill types and characteristics after pilling processing. The results were evaluated in the most appropriate category according to the pill’s structure. Two sample fabrics containing appropriate structure and characteristics which were able to explain the three overlooked issues were used. In digital image processing made by paying attention to these mentioned three points, both pill parameters and textural features obtained from digital images were determined. The relationships between these parameters and subjective evaluation results were examined.

Source: Fibers and Polymers

Publisher: The Korean Fiber Society (KFS)

Original Language: English

Document type: Article / Restricted Access

Link: https://link.springer.com/article/10.1007/s12221-020-9552-1

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October 15, 2019

An Image Processing Research Consistent with Standard Photographs to Determine Pilling Grade of Woven Fabrics

Objective results corresponding to each parameter were analyzed comparatively with these subjective results. 

The developed method was successful by using mean of matrix elements from textural parameters and total area from pill characteristics.
 
In this study, MATLAB 2018a software was used to evaluate pilling grade of woven fabrics objectively.

Experimental works were carried out on the EMPA W3 standard photographs and accordingly two woven fabrics.

Equations were built based on the measurements of pill characteristics and textural parameters of these photographs with the help of curve fitting method after image processing steps.

Intervals were generated for each fabric by using slope of these equations and quantitative parameters obtained from the original fabric.

Furthermore, fabrics that were provided pilling formation at different test turns were evaluated subjectively by expert operators. 





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