Digital holographic security system based on multiple biometrics

A new multiple biometrics based encryption technique using digital holographic security system has been proposed. In this method, a face image of an enrolled person can be spatially multiplexed by a phase mask. This phase mask has been generated by the fingerprint of the enrolled person. In order to overcome the problem of rotation and scaling of the fingerprint, the log polar transform of the fingerprint has been used. In the previous techniques based on the double random phase encoding two random phase masks have been used. In our technique, along with one random phase mask, the phase mask generated by the fingerprint has been used instead of the second random phase mask. This method has advantage over other digital holographic security system due to its capability of authentication by using the fingerprint of the enrolled person. A threshold value of the correlation of the training fingerprints is sent to the receiver to verify the presence of the enrolled person’s fingerprint. Matlab simulation of the technique has been carried out to validate the proposed technique. The correlation of the log polar of the enrolled fingerprint with the log polar of the target and antitarget fingerprints has been used to authenticate the transmitted original face image at the receiver side. Key-Words: Digital holography, Multiple biometrics, Biometric encryption, Encryption, Decryption