Abstract
Using the “Concentrated Gaussian Curvature based on an angle (Kc=2π-θ)” extraction theory for the three-dimensional (3D) curved surface shape of clothing patterns, we can clearly define the features of the tight-fitting pattern (T-pattern) relative shapes of young men (n=151) compared to those of young women (n=203). This is because the total Kc values of the five darts and the three boundary lines on both T-patterns are a consistent 720 degrees, according to the Gauss-Bonnet conservation law, regardless of absolute size. The features of male T-pattern relative 3D curved shapes consisted of scattered curved surface shapes on the internal slight bust and side darts and differences between the front and back surface shapes on the external boundary lines. On the female T-patterns, however, the internal shapes were mainly formed from the bust darts. This may make it difficult to design a general pattern to fit all male bodies. These features provide useful data for the classification of similar curved relative shapes on the male pattern and for future use on garment size indication tags.