3D Model Retrieval Based on 3D Discrete Cosine Transform

The content-based retrieval systems for 3D models on the Web become necessary since digital databases of 3Dobjects are growing. In this paper, we propose a new method to describe 3D models. This method is based on 3D discretecosine transform which is applied for the voxelized 3D model. The discrete cosine transform is widely used for 2D imagecompression and it shows its performance for the JPEG compression algorithm. The proposed descriptor is implemented inour 3D search engine, tested using the princeton shape benchmark database, tested for noise and decimation; and comparedto other 3D descriptors known in the literature