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Slap Fingerprint Segmentation Evaluation II (slapsegII)

SlapsegII has been superseded by SlapsegIII 

    Begin: April 7, 2009

SlapSegII is now being performed as an ongoing evaluation. Participants can submit to have segmentation algorithms evaluated by completing a SlapSegII Application . The SlapSegII evaluation Plan provides all the details on the evaluation and how to submit software. Upon completion of testing results will be posted in SlapSegII Results . Participants are limited to testing an algorithm every 90 days from the date the previous successful algorithm started testing (dates will be posted in SlapSegII Results).

SlapSegII Analysis Document

November 22, 2010

SlapSegII Analysis: Matching Segmented Fingerprint Images

This study compared the matching accuracy of hand-marked segmentation and automated segmentation algorithm results to examine the effect of automated slap fingerprint segmentation errors on matching accuracy.

SlapsegII Results Document

February 17, 2009


This is the final report for the Slap Fingerprint Segmentation Evaluation II. Any edits or changes to this report will be noted on this page.

Draft Evaluation Plan for SlapSeg II

July 23, 2008


This new version of the evaluation plan contains the details on how a successful segmentation will be determined for 2 inch slap image data and a few clarifications on the 3 inch success measure. The following edits were made to the document:

  1. section - Added maximum width x height limits for 2 inch slaps data
  2. section 4.9.1 - Added text stating the ground truth for 2 inch slap data used rectangular boxes.
  3. section 6.1 - Added formulas used to determine successful segmentation of 3 inch slap data.
  4. section 6.2 - Added 2 inch success measure.

June 13, 2008


Contains 2 minor changes to section 4.9.1:

  1. States that 0 degrees for 2 inch rotated images is vertical,
  2. Reorganized so finger definitions appear before examples of output file format.

June 3, 2008

Here is the updated Slap Fingerprint Segmentation Evaluation II Draft Testing Plan as of June 3, 2008 in pdf format.

May 13, 2008:

In 2004, NIST conducted a fingerprint slap segmentation study [1] to assess the state-of-the-art in fingerprint segmentation technology. Given the development of new technology it has become necessary to reassess the current state-of-the-art of segmentation algorithms. SlapSegII will give providers of this technology the opportunity to participate multiple times as their technology improves and compare their results to previous results on a fixed standard database. The SlapSegII testing strategy, evaluation data, and measure of successful segmentation are discussed in detail in this testing plan. A copy of the Slap Fingerprint Segmentation Evaluation II Draft Testing Plan in pdf Format.

SlapSegII - Calendar

Calendar Announcement/Request for Comments                                                 05/08/2008 
End Comment Period                                                                                                          05/23/2008 
Release Final Test Plan                                                                                                       06/03/2008 
Start Accepting Applications                                                                                            06/03/2008 
Validation Data Available                                                                                                   06/12/2008 
Last Day for Applications                                                                                                    06/27/2008 
Validation Data Results Submission Deadline                                                           08/07/2008 
Software Submission Deadline                                                                                        08/13/2009 
Results Report Issued                                                                                                           02/17/2009 


Created February 22, 2010, Updated June 2, 2021