Unimodal and Multimodal Biometric Data Indexing

Chapter 7

Multimodal Biometric Data Indexing

Multi-biometric based person identification is gaining its importance and present trend is to process a large amount of biometric data which is in the order of millions. The problem in such situations is to deal with high dimensional features from two or more biometric traits. This demands high computation time to identify a query template. In this work, an approach to index a large pool of multi-biometric data has been proposed so that the matching process can be accomplished in a real time without compromise in accuracy of person identification. The proposed indexing technique is based on the relative scores. First, a small set of reference subjects is selected. Then, the subjects are enrolled ...