Page 290 - Automated Fingerprint Identification Systems (AFIS)

APPENDIX B: INTERNATIONAL ASSOCIATION FOR IDENTIFICATION 275

to the originator in a TOT called the SRL, or Search Results—Latent. The orig-
inator then must determine if there’s a matching candidate.

4.5. ERRT, ERRI, ERRL
We purposely tested Error messages ERRT, ERRI, ERRL, which correspond to
TPIS, IRQ and LFIQ respectively.

5. SCHEDULE
Start Finish
IAI-AFIS Committee Panel Met 7/96
Concept of Operations Published 10/96
Demonstration Test Plan Published 2/97
Sample Record Specifications Published 11/1/96 2/6/97
AFIS Vendor S/W Tuning & Development 2/7/97 4/4/97
Vendor Testing with ComnetiX 4/7/97 7/11/97
Brief NLETS Annual Conference 7/4/97
Vendor Testing via Internet 7/14/97 7/25/97
Reconvene IAI Panel 7/27/97 8/2/97
Regression Internet Testing 5/98 5/98
Operational Testing via NLETS 6/1/98 6/4/98

6. ISSUES AND RESOLUTIONS/RECOMMENDATIONS
The following categorized issues were encountered throughout the year.

6.1. LATENT PRINTS
Issue L-1: Although the ANSI-NIST standard defines minutiae extraction stan-
dards in the Type-9 record, it is not considered optimal for latent searches due
to each AFIS system having proprietary encoding and matching software. Thus,
we could not send minutiae extractions, and required remote intervention for
completing the minutiae extraction.
Resolution: The FBI, NIST and vendors continue to work on creating a more
satisfactory solution. For purposes of our testing, we developed a variation of
the EFTS Latent Fingerprint Image Search (LFIS). The LFIS specifies auto-
matic extraction at the remote site with no human intervention. Instead, the
IAI AFIS Committee participants on this effort created a transaction called an
LFIQ, Latent Fingerprint Image Query, which specifies that the remote site
must intervene to extract minutiae before processing.