International Journal of Computer Applications
Biometric system is a pattern recognition system which uses physiological traits (i.e. face, palm, and iris) or behavioral traits (i.e. speech, signature) for verification and identification. The biometric approach identifies an individual or verifies the claimed identity by extracting the feature of the biometric trait which is given as an input and matching it with the data base available. A Biometric system has four stages of processing. In the sensor stage, a biometric image is captured and enrolled as an input to the system which is used for verification or identification. In the feature extraction stage, the feature of the enrolled data is extracted and stored as a feature set and is further processed for verification or identification.