Compared basic stitch’s consumptions using image analysis, geometrical modelling and statistical techniques

Abstract

This study deals with an evaluation of the sewing thread consumptions relative to the basic stitches shapes. Indeed, lockstitch type 301, three-overegged stitch type 504, chain stitch type 401 and safety stitch (five overegged stitch) type 516 are considered for this investigation. Hence, the overall analyzed consumption values are compared and discussed using different methods such as statistical, geometrical modelling and image analysis techniques. By classifying the comparative results, those obtained using image analysis and geometrical modelling techniques seem relevant. In fact, based on the differences investigated between experimental and theoretical consumptions, explained as error in percentage values, the image analysis technique is appears as the best method to evaluate the consumed thread amount. Even though, the errors are ranged from 0 to 3.89%, from 0.01 to 18.83% and from 0.17 to 18.98% for the image analysis, geometrical modelling and the statistical methods, respectively. These findings proved that the image analysis method presents the lowest error values; furthermore, it can be widely used by industrial to predict and evaluate the consumption values.