Generating Chinese Calligraphy on Freeform Shapes

To adequately reveal aesthetic value of Chinese calligraphy, the way to precisely generate characters on freeform shapes is a critical issue. In this paper, we present a novel method to solve the problem. Firstly, to avoid the disadvantage of pictures and obtain an excellent visual effect, we vectorize Chinese calligraphy characters by disk B-spline curve DBSC. Secondly, instead of the traditional texture mapping method, we innovatively employ geodesic computation and exponential map method to calculate accurate texture coordinates. The geodesic computation is to calculate the geodesic distance between every two vertexes of the character mapped region. And the exponential map is to obtain every vertex's geodesic coordinates. Thirdly, 3D points coordinates on surfaces that correspond to vectored character in tangent plane are acquired, therefore the vectored character is able to be mapped onto surfaces. At last, some experiments are accomplished to test and verify the accuracy and efficiency of our method.