基于纹路的三维指纹模型重建算法

三维指纹识别是近几年兴起的一种基于三维指纹模型进行指纹识别的新技术,能够克服传统接触式指纹识别中存在的纹路变形、残留纹路、对手指皮肤状况敏感等缺陷。基于多角度图像的三维指纹模型重建是整个识别过程中的一个关键步骤。提出了一种基于纹路的重建算法,算法重建的指纹模型直接包含纹路与细节点相关特征。相对于已有文献中将指纹表皮作为重建对象,算法重建结果更有助于特征提取等三维指纹识别后续过程。

Ridge Based 3D Fingerprint Reconstruction Method

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.