Instrumental Evaluation of Fabric Wrinkle Recovery

Abstract

This paper describes the application of computer image analysis techniques to characterization and quantification of fabric wrinkling for the purpose of devising an automated rating system of fabric wrinkle recovery. Two variables, surface ratio and shade ratio, are defined to quantify wrinkled appearance. The techniques for measuring these variables are discussed. Based on the analysis of the AATCC wrinkle recovery replicas using these techniques, we found that each of these two variables approximately exhibits an exponential relationship with the grades presented by the replicas. Through non-linear regression, two empirical equations are formulated to serve as mathematical models for grading fabric wrinkle recovery. The wrinkle recovery of seven different fabrics is evaluated, respectively, by observers using AATCC test method 128 and by the image system. Results show that the computer grading is highly consistent with the visual grading, and is more accurate and reliable.