To quickly and easily define and change a three-dimensional shape, such as a relief, etc., having many free curved surfaces.
A system for defining three-dimensional shape of a relief, etc., includes a process (301) for defining a reference curved surface which becomes the basis of a relief based on an equation, a process (302) for defining a raster image having the shifting value (namely, the value of unevenness on the reference curved surface) of each point in a prescribed direction (for example, in the normal direction) at each point, a process (303) for defining the correspondence relation between the reference curved surface and raster image at each point, and a process (304) for defining the reference value of the value of a star image so as to define the three-dimensional shape of the relief, etc., by combining together the positional relation between the reference curved surface and raster image, the reference value of the value of the star image, and the moving amount of the raster image in a prescribed direction.
AOKI KIYOSHI
IMABETSUPU MASAYOSHI
ENDO AKIHIKO
MIURA YASUSHI
SUNAGA YOSHITAKA
SATO NAOTO
NAKANISHI MINORU
HIRANO HISASHI
