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Algorithm for enhancing fingerprint images

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3 Author(s)
Sherlock, B.G. ; Saint Louis Univ., Cahotia, IL, USA ; Monro, D.M. ; Millard, K.

An original algorithm is presented for the high-quality enhancement of fingerprint images. Fingerprints are directionally smoothed using a position-dependent Fourier domain filter whose orientation is everywhere matched to the local ridge orientation. Thresholding then yields the enhanced image. Use of the proposed enhancement method within a working AFIS significantly improves speed and accuracy.

Published in:

Electronics Letters  (Volume:28 ,  Issue: 18 )