Digital style design systems from concept to sophisticated shape

This paper reports four digital style design systems to construct a sophisticated shape from a concept or a rough sketch. First one is a system to automatically construct a 3D digital model form key words expressing the product concept. Second one is a system to automatically construct the 3D digital model from a rough sketch drown by a designer. Third one is a system to automatically sophisticate a 3D digital model according to the high light lines indicated by a designer. Fourth one is a system to sophisticate a 3D digital model by forming characteristic lines indicated by a designer.