关键词: 三维指纹，三维指纹模型重建，非接触指纹识别

Abstract: Three-dimensional (3D) fingerprint recognition based on 3D fingerprint model could technically solve the problems suffered in traditional touch-based fingerprint system, such as filth, skin deformation, and the latent finger-prints from a dirty sensor. The 3D fingerprint model reconstruction using multiple views is the key procedure in the recognition system. This paper presented a new ridge based method to obtain 3D reconstruction of the fingerprint. Different from the existing algorithms which focus on reconstruction of finger surface, the presented method directly reconstructs ridge pattern and minutiae pattern in 3D space as the 3D fingerprint model and it is expected to be more suitable for subsectucnt process of recognition, such as feature extraction.

Key words: 3D fingerprint,3D fingerprint reconstruction,Touchless fingerprint recognition