Study and Realization of Partial Fingerprint Mosaicking Technology for Mobile Devices

To obtain a large fingerprint template from several partial fingerprints, we propose a novel partial fingerprint mosaicking scheme, which includes a coarse-to-fine alignment stage and a fusion stage, to build a synthetic template from multiple partial fingerprints. In the alignment stage, firstly, a central patch is determined after pair-wised patch matching, then the rest patches are coarsely aligned based on the central patch, thirdly, the locations of patches are optimized globally. In the feature fusion stage, not only minutiae, but also ridge sampling points are fused to increase the information in the synthetic template. The proposed algorithm is tested on two datasets of FVC2002 and the experimental results show that it can achieve a great fingerprint mosaicking performance.