College of Mechanical and Electrical Engineering;
Xi an Polytechnic University;
Xi'an 710048;
China;
Key Laboratory of Modern Intelligent Textile Equipment;
Xi'an Polytechnic University;
Xi'an 710048;
China;
College of Fashion and Art of Design;
Xi'an Polytechnic University;
Xi'an 710048;
China;
wool fabric; machine vision; support vector machine(SVM); optical imaging;