Biometric research has experienced significant advances in recent years given the need for more stringent security requirements. Iris recognition has been demonstrated to be an effcient and reliable technology for personal identification. In this book we employed three new matching schemes for iris recognition, the Scalar Product (SP), the Multi-dimensional Artificial Neural Networks (MDANN), and the Elastic Graph Matching (EGM). These three methods are trained and tested using two databases of gray scale eye images (CASIA and UBIRIS). They are trained using 996 and 723 iris images from the...