A wavelet-transfonn-based binarization algorithm on dynamic threshold of vertical orientation of fingerprint

Abstract

Absfracf A wavelet transform based binarization algorithm on the dynamic threshold of vertical orientation of the input fingerprint is proposed firstly. The gray values of the pixels in the neighbourhood region are specially Considered, and a wavelet multi-resolution approximation @RA) is used to filter out the high Irequencyooise Secondly, a portable fiogerprint recognition system based on FPSZOO sensor is designed to realiie the algorithm. The experimental results show that the proposed algorithm can effectively reduce eliminate the noise from the fingerprint image and presents more reliable binarization image which is very beneficial to improvement the thinned images of fingerprint.