The 3D models, represented by vertex positions and the association between triangles and vertices, colors, normals and texture information, are stored as virtual reality modeling language (VRML) format files. Connectivity information and photometry information are not treated in this paper. The vertices coordinates follow a vector quantization process in order to obey the bitrate control constraint. Next, a blind source separation algorithm is proposed to perform a decorrelation phase. At the end, arithmetic coding is applied to form the final bit steam, thus containing the compressed 3D information. The obtained experimental results are performant, being comparable with those of actual compression methods of 3D models, thereby proving an actual gain. Thus, the technique based on the BSS algorithm offers an alternative way for the compression of 3D models.

Keywords: Geometry compression, 3D models, Vector quantization, Blind source separation (BSS), Arithmetic coding