Abstract
Computer-aided design (CAD) systems have been developed for modeling the desired 3D forms of products and they are useful for improving efficiency of product detail design. However, it is often difficult to use CAD systems for aesthetic design because aesthetic design is creative activity and strongly depends on creativity of designers. If designs can be controlled by using indexes, they make CAD systems valid for aesthetic design processes. This paper proposes three shape evaluation indexes to quantitatively evaluate shape image of curves.
