Abstract
Biometrics recognises a person through physiological/behavioural attributes like fingerprint, face, iris, retina or DNA. Biometrics relates to a human being's physiological/behavioural characteristics and ensures different techniques that capture an individual's identity. Multimodal biometric system combines two/more traits that are not copied, forgotten or stolen. Feature extraction extracts discriminant features from samples which are represented in a feature vector. Feature vector thus got is of high dimension resulting in computation complexity and affecting classifiers performance. To offset this, feature selection obtains an optimal features subset. A multimodal biometric framework based on fingerprint, iris and face is presented in this paper. In this work, features are extracted using Gabor filter, Local Tetra Pattern and feature selection is performed by Genetic Algorithm (GA), Particle Swarm Optimisation (PSO) and proposed Hybrid PSO (HPSO). The proposed hybrid PSO-GA is more flexible and robust and the hybrid strategy avoids premature convergence providing better exploration of the search process. Experimental results demonstrate the effectiveness of the proposed algorithm.
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