A method of 3D CAD model retrieval based on genetic algorithm

A new method of 3D CAD model retrieval based on genetic algorithm is proposed. By extracting B-Rep information of CAD models, the models are represented by the AAG (attribute adjacent graph). Next, genetic algorithm is used to detect the common sub-graph of AAG and then obtain the similar sub-parts. The similarity of the CAD models is evaluated by comparing the similar sub-parts. Experimental results show that this method can achieve 3D CAD model retrieval and the retrieval performance is higher than the common retrieval algorithms and can achieve the reuse of design and manufacture.