Virtual sculpting and virtual woodcut printing

We propose an interactive modeling technique to form solid objects with curved surfaces as if we were sculpting them. Users can remove or attach arbitrary ellipsoid shapes from or to a solid object by operating virtual chisels, and the surface changes in every carving operation in real time. The shape of a carved solid object is described with a CSG model. The carved solid objects generated by our virtual sculpting system look like real wooden sculptures. Thus we propose a method to generate a woodcut print from the virtual printing block generated by our system.