A Study on Quantitative Evaluation of Calligraphy Characters

In this study, a numerical method was proposed to evaluate the calligraphy work called calligraphy evaluation system. Four classical chirographies of “Kaisho”, “Gyosho”, “Sousho” and “Hiragana”, and 47 characters for each chirography, were selected and analyzed by this system. The “Sumi” distribution of character was clarified from 12 directions and summarized into four parts of horizontal part, diagonal left part, vertical part and diagonal right part. The character‟s contour line was converted to a signal data in order to calculate roundness index. The degree of character‟s radian was presented by roundness index. The smooth index was calculated at the same time. Additionally, width index, “Sumi” ratio, stability index also were calculated to contrast the features of each style. The main character points of four styles of “Kaisho”, “Gyosho”, “Sousho”, “Hiragana” were extracted to compare each other, and provide a reference for learners. The learners could obtain the quantitative data to understand their work‟s characteristics. It can also be compared with other person‟s work by this system in order to improve learners‟ writing skill.