Michael D. Indovina, Vladimir N. Dvornychenko, R. A. Hicklin, G I. Kiebuzinski
The National Institute of Standards and Technology (NIST) Evaluation of Latent Fingerprint Technologies - Extended Feature Sets (ELFT-EFS) consists of multiple ongoing latent algorithm evaluations. This report describes the results and conclusions of ELFT- EFS Evaluation #2; an accuracy test of latent fingerprint searches using features marked by experienced human latent fingerprint examiners, in addition to automatic feature extraction and matching (AFEM). ELFT-EFS Evaluation #1 was the first evaluation of latent fingerprint matchers in which systems from different vendors used a common, standardized feature set. ELFT-EFS Evaluation #2 repeats the same tests using updated matchers. The results show that in most cases there were measureable improvements in the ability of matchers to use images plus manually marked Extended Features (EFS) as an effective and interoperable feature set over the Evaluation #1 results. The accuracy when searching with EFS features is promising considering the results are derived from early-development matchers. Further studies using next-generation matchers are warranted to determine the performance gains possible with EFS.