SlapSeg participants may be interested in the latest installment in NIST's Special Database (SD) series for biometrics, particularly Special Databases 302b and 302c:
NIST Special Database 302
Nail to Nail Fingerprint Challenge
This set of friction ridge images was captured as part of the Intelligence Advanced Research Projects Activity (IARPA)'s Nail to Nail Challenge. This dataset contains 200 of the 331 Challenge study participants. The data has been separated into several smaller datasets:
Additionally, after a brief hiatus, SD 300 and SD 301 are once again available for download. Qualified researchers may obtain any of these datasets by agreeing to the terms of use in the form on the webpage for each dataset.