Subassembly Retrieval of 3D CAD Assembly Models with Different Layout of Components Based on Sinogram

Kaoru KATAYAMA  Wataru SATO  

IEICE TRANSACTIONS on Information and Systems   Vol.E102-D   No.4   pp.777-787
Publication Date: 2019/04/01
Publicized: 2019/02/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2018DAP0015
Type of Manuscript: Special Section PAPER (Special Section on Data Engineering and Information Management)
3D CAD model,  assembly,  subassembly,  retrieval,  layout of component,  sinogram,  

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We propose a method to find assembly models contained in another assembly model given as a query from a set of 3D CAD assembly models. A 3D CAD assembly model consists of multiple components and is constructed using a 3D CAD software. The proposed method distinguishes assembly models which consist of a subset of components constituting the query model and also whose components have the same layout as the subset of the components. We compute difference between the shapes and the layouts of the components from the sinograms which are constructed by the Radon transform of their projections from various angles. We evaluate the proposed method experimentally using the assembly models which we prepare as a benchmark. The proposed method can also be used to find the database models which contains a query model.