Matched filter design for fingerprint image enhancement

Author

O´Gorman, Lawrence ; Nickerson, Jeffrey V.

Author_Institution

AT&T Bell Lab., Murray Hill, NJ, USA

fYear

1988

fDate

11-14 Apr 1988

Firstpage

916

Abstract

A procedure for filter design is described for enhancing fingerprint images. Four steps of this procedure are described: user specification of appropriate image features, determination of local ridge orientations throughout the image, smoothing of this orientation image, and pixel-by-pixel image enhancement by application of oriented, matched filter masks. The contribution of this work is to quantify and justify the functional relationships between image features and filter parameters so that the design process can be easily modified for different conditions of noise and scale. Application of the filter shows good ridge separation, continuity, and background noise reduction

Keywords

filtering and prediction theory; interference suppression; matched filters; picture processing; background noise reduction; filter parameters; fingerprint image enhancement; image features; local ridge orientations; matched filter design; matched filter masks; orientation image; picture processing; pixel-by-pixel image enhancement; user specification; Background noise; Fingerprint recognition; Image enhancement; Image matching; Information filtering; Information filters; Information systems; Matched filters; Process design; Smoothing methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on

Conference_Location

New York, NY

ISSN

1520-6149

Type

conf

DOI

10.1109/ICASSP.1988.196738

Filename

196738