Research And Hardware Implementation On Finger Vein Authentication Algorithm

Finger vein pattern authentication is a new and burgeoning biometric authentication method in recent years. Compared to the traditional authentication method(such as fingerprint identification, face recognition, iris recognition and other biometric identification methods), finger vein pattern recognition is the only way to meet all of requirements, including highly unique, non-contact, high precision, can be done automatically, low cost and patterns that exist inside the human body. According to the published report on global market for biometrics technologies, and development history of more mature biometric method like fingerprint identification, we can see that research and implementation on real-time and hardware based finger vein authentication algorithm is especially significant.In this thesis, a lot of work has been done during the research on the key technology of the finger vein patterns extraction and authentication. First, the existent Bi-finger vein was improved on image sensor and Light intensity controller to fetch a steadier and clearer vein image. Second, a real-time finger vein enrollment and authentication algorithm was designed on the basis of parallel and pipeline architecture, and then implemented in hardware. Finally, the implemented algorithm's time consuming is just 0.5ms in the 100 MHz clock rate, for both enrollment and authentication process. Compare with the 0.5ms, the time consuming in the newest paper in 2010 IEEE Symposium on Industrial Electronics and Application is 19.54 ms, in 100M Hz clock rate. Besides the research institutes, the fastest finger vein pattern authentication rate is 0.5s, by a tidy algorithm that implemented by the Hitachi corporation.The innovative work of this thesis contains three aspects.1. The algorithm process flow is totally redesigned and optimized for parallel implementation.2. Every algorithm sub-modules is redesigned for parallel and pipeline architecture. Finally, the time complexity of every parallel process core in every algorithm sub-modules is optimized from O(n2) to 1 cycle.3. This thesis has studied the reuse methodology, software and hardware co-design system methodology, then designed and implemented two finger vein authentication systems on the basis of the real-time and hardware vein authentication algorithm. One is real-name tickets authentication system, the other is certificate anti-forge system.