Abstract
Similarity assessment and retrieval of 3D CAD models play a key role in achieving reuse of huge amount of 3D CAD models. In this paper, a new approach to similarity assessment and retrieval of 3D CAD models based on dilation based skeleton (DBS) is presented. First the DBS of a 3D CAD model is introduced; Then the detailed algorithms of generating and refining the DBS of a 3D CAD model are described; Furthermore the method of performing similarity assessment and retrieval of 3D CAD models based on the matching of the DBS graphs derived from the DBS representations and containing both primary topological and geometric information of the models is presented; Finally some preliminary test results are given.
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