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Fingerprint Enhancement by Fourier Domain Optical Processing

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Abstract

Fingerprint enhancement is an essential stage in the computer processing of fingerprint images. A technique based on directional Fourier domain filtering which is capable of producing excellent results is discussed in this paper. Implementation of this algorithm on a general-purpose digital computer is slow, but using optical hardware removes the computational overhead of Fourier domain filtering.

© 1987 Optical Society of America

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