การพัฒนาโปรแกรมคอมพิวเตอร์เพื่อพิสูจน์เอกลักษณ์ลายทอผ้า / เบ็ญจพร แสวงหาทรัพย์ = Computer program development for identification of weave patterns / Benchaphon Sawangharsub
Weave patterns affect the end-use properties of woven fabrics. Identification of weave patterns has been done traditionally by visual evaluation. This is prone to errors as it depends on the skill of inspectors. This research aims to develop an algorithm and a computer program for identification of weave. The fabric images were analyzed by calculation color differences between each pixel. It was found that color different data obtained directly could not be used. Thus, the autocorrelation technique was performed on the image prior to the calculation. A diagram acquired from the calculated color differences were made available. Position of each yarn float was then obtained by detecting upper and lower peak of the curve in the diagram. Length of each float can be obtained using information about yarn size. A Visual Basic program was developed based on the above algorithm. Images of a square-inch woven fabric were obtained using an ordinary scanner with resolution of 600 dots per inch and saved in bitmap format. Users were asked to specify the scanning lines, vertically and horizontally. Weave pattern was then displayed. It was found that preciseness of the program to analyze number of yarns in each direction and the weave pattern can be identified depended on the selected scanning lines. Average scanning time for each fabric is around seconds.
