Abstract
Constructing a solid model through computer understanding of engineering drawings could resolve the input problem of solid models. For computer understanding, however, the engineering drawing has to be defined and represented with clear semantics. The conventional engineering drawing is usually described by showing examples and represented as a set of curve segments on a drawing plane, so that it can only be understood by human engineers. In this paper, an engineering drawing based design model, ED-DESIGN, which is much more computer understandable than the conventional one is proposed. In this model, an engineering drawing is represented in a drawing space rather than in a drawing plane. In other words, the scheme of engineering drawing is interpreted as pseudo-3D surface design scheme rather than a 2D design scheme. With this design model, it is possible to develop definite knowledge for constructing a solid model through computer understanding.
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