3D Models Feature Extraction and Retrieval Technology Based on Eigen-Model

As the key to content-based 3D model retrieval,the present feature extraction methods are not ideal,so content features extraction by using information categories is proposed.According to the trait of"similarities with slight difference"of one category,elastic eigen-model,as a representative of a category,is offered.Extraction of eigen-model's feature and filtration of eigen-model are also dealt with,and a more effective retrieval procedure in 3D models is proposed.Experiments on Princeton Shape Benchmark by different evaluation indexes show that the new approach is valid.