Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Slap Fingerprint Segmentation Evaluation (Slapseg) Overview


NIST has conducted two separate slap fingerprint segmentation evaluations to assess the state of the art in fingerprint segmentation technology.


SlapSeg04 was the first and evaluated a slap segmentation algorithm's ability to segment fingerprints that could be matched using high end fingerprint matching technology. SlapsegII started in 2009 and compares the slap segmentation algorithm's output to hand marked ground truth results. This assesses the segmentation algorithm's ability to preserve the entire fingerprint that is available and not just produce a "matchable" fingerprint. SlapSegII is an ongoing evaluation and allows algorithm developers to submit software at anytime.

Slap Fingerprint Segmentation Evaluation2004 (Slapseg04)

Slap Fingerprint Segmentation Evaluation II (SlapsegII) - results updated 12/14/10 
SlapsegII has been superseded by SlapsegIII 

Slap Fingerprint Segmentation Evaluation III (SlapsegIII) 

NOTE: The algorithms submitted for this evaluation are stand alone and not evaluated as part of an AFIS system. In no case does identification of any commercial product, trade name, or vendor, imply recommendation or endorsement by the National Institute of Standards and Technology, nor does it imply that the products and equipment identified in the evaluation are necessarily the best available for the purpose.


Created April 27, 2010, Updated April 2, 2019