Fingerprint templates with high recognition accuracy and high security generated by discrete fractional sine transform

A new method for generating fingerprint templates with high recognition accuracy and high security is proposed. In the method the phase distribution of the discrete fractional sine transform (DFST) is used to hide the information of the original fingerprint image itself. The condition to realize the high recognition accuracy of fingerprint recognition using the proposed templates is made clear on the basis of the minimum error rate (MER). In addition, the robustness of the templates is indicated.