A Proposal of Evaluation Method for Balance of White Space in Calligraphy by Using Horizon View Camera

In this research, we paid attention to calligraphy education. In current calligraphy education in Japan, teachers evaluate character written by students and they teaches based on the written character. Professional in calligraphy can estimate writing process and balance of character which are important points for evaluation from written character by estimating movement of contact shape (contact face with a paper and a brush). But it takes a lot of time for students to learn correct writing process of character and balance of character in this education way. If teachers and students can know a movement of the contact shape, the calligraphy education will be more efficient. In case of taking an image of a brush by using a general camera setting, it is difficult to separate a character written by a black ink and a black brush to detect contact shape because both are black and the contact shap is hided under the brush. Therefore, we propose new camera setting system as Horizon View Camera (HVC) that is a special camera setting, and contact shapes can be detected and reconstructed by using this camera system. And, we evaluate balance of white space which means unwritten space on a paper for evaluation of a character. Correct white space in calligraphy is not just unwritten space but is influenced by movement of contact shape. Thenby using HVC system, movement of contact shape which is difficult for amateur to estimate from written character can be detected dynamically and evaluation of white space in considering of influence of contact shape movement can be improved.