ED-DESIGN - AN ENGINEERING DRAWING BASED DESIGN-MODEL FOR COMPUTER UNDERSTANDING

Constructing a solid model through computer understanding of engineeri ng drawings could resolve the input problem of solid models. For compu ter understanding, however, the engineering drawing has to be defined and represented with clear semantics. The conventional engineering dra wing is usually described by showing examples and represented as a set of curve segments on a drawing plane, so that it can only be understo od by human engineers. In this paper, an engineering drawing based des ign model, ED-DESIGN, which is much more computer understandable than the conventional one is proposed. In this model, an engineering drawin g is represented in a drawing space rather than in a drawing plane. In other words, the scheme of engineering drawing is interpreted as a ps eudo-3D surface design scheme rather than a 2D design scheme. With thi s design model, it is possible to develop definite knowledge for const ructing a solid model through computer understanding.