Reconstruction of an Architectural Three Dimensional Model from Orthographic Drawings

In this paper, we describe a semi-automatic reconstruction method of a three-dimensional model from orthographic view drawings of architecture. There are several approaches to reconstruct three-dimensional solids from two-dimensional drawings. But most of them deal with mechanical drawings, not architectural drawings. We observed three-dimensional modelling process of design practice and we tried to make clear model-ing procedure from architectural drawings, such as plan and elevation views, and classified into seven typical modelling operations on three-dimensional CAD system. Then we pro-posed a reconstruction method to create a surface three-dimensional model from a set of architectural plan and elevation drawings. Each elevation drawing is defined as polygon elements. The reconstruction system makes each element of elevations built up and then placed each around the contour of the plan drawing. Several illustrative examples are in-cluded as results