Geometric Morphometrics via EFA on Silver Bullion Outlines of Southern Song Dynasty

This study analyzes the orthoimages of 113 Southern Song silver bullions to investigate potential correlations between their shapes and the production systems of the time. By employing a quantitative analysis of silver bullion outlines using two-dimensional geometric morphometric methods (2D-GMM) based on Elliptic Fourier Analysis and multivariate statistical techniques, the research reveals that the shapes of silver bullions vary with their weights and production locales.