Free fingerprint classifier cd-rom

Vision List Digest: Article 2, Volume 14, Issue 31
From: Jerry Candela x3388
Post-Followup: submission@VISLIST.com

PCASYS - A Pattern-level Classification Automation System for Fingerprints
By: Gerald T. Candela, Patrick J. Grother, Craig I. Watson,
R. Allen Wilkinson, and Charles L. Wilson
National Institute of Standards and Technology

PCASYS is a distribution of automatic fingerprint classification
software, which is being made available free of charge. Its primary
component is a classifier demonstration program. This demo separates
fingerprint images into pattern-level classes known as arch, left
loop, right loop, scar, tented arch, and whorl. The distribution is
in the form of an ISO 9660 format CD-ROM and a printed report.

The fingerprint classifier uses these modules: segmentor; enhancer;
feature extractor (ridge directions); registration; linear transform,
which applies regional weights and reduces dimension; classifier, a
Probabilistic Neural Network (PNN); auxiliary classifier, which uses
pseudoridges to detect whorls; finally, combiner, a rule that uses the
outputs of the PNN and the pseudoridge program to produce the ultimate
output, a hypothesized class and a confidence level. The program can
be compiled in a graphical version which displays the results of the
processing steps (requires X Windows), and in a non-graphical version
(does not require X Windows, and runs faster).

The distribution contains software for the demo program, and also for
programs that perform an optimization process, and for utility
programs. Source code in the C language is provided. The programs
may be compiled and run on UNIX workstations; they have been
successfully installed on several workstation models. Also included
are data files needed by the classifier (prototype feature vectors,
and transform matrix), and a set of fingerprint images.

To find out more about PCASYS, the contact person is:

Gerald T. Candela
National Institute of Standards and Technology
Building 225, Room A216
Gaithersburg, MD 20899
Phone: (301) 975-3388
FAX: (301) 840-1357
email: jerry@magi.ncsl.nist.gov

Or, ftp to sequoyah.ncsl.nist.gov as user anonymous. File
/pub/databases/catalog.txt lists databases and software published by
NIST Visual Image Processing Group; it contains a slightly more
detailed blurb about PCASYS.

To obtain a FREE copy of the PCASYS distribution (CD-ROM and printed
report), please send a letter of request, by paper mail or fax only.

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