Automatic reconstruction of 3D solid objects from 2D orthographic views

摘要

An algorithm which can automatically construct 3D solid objects from 2D orthographic views is proposed. The views contain geometric information of lines, circles or circular arcs. The reconstructed objects may be polyhedra, cylinders, partial cylinders and their composites. The reconstruction process consists of three phases: decomposition, reconstruction and composition. First, the inputted drawing is decomposed into several predefined types of subviews, then a translation sweep operation, perhaps followed by a plane-cutting operation, is used to reconstruct the corresponding subpart for each set of subviews. Finally, the volume enclosure relationships between these subparts are utilized to compose the final part.