Auto-Capture Using Multi-Sampling - NIST Visual Image Processing ...

User Interface FeedbackSubject and operator see color borders around slapimage during multi-sampling and auto-captureAudible beep is heard while subject’s hand should remainon scannerYellow borderdisplayed duringmulti-samplingBlue borderappears duringauto-captureBoxes drawn aroundsegmented fingersafter auto-captureMarch 9 th , 2006 Auto-Capture Using Multi-Sampling - I/O Software 7

Override Functionality Periodically, subjects have missing or badlydamaged fingerprints. Multi-sampling accepts quality images with missingfingers Annotation tool can designate fingers as amputatedor ‘unable to print’ before and/or after auto-capture Multi-sampling process will eventually forcecapture if no acceptable image is found Fingers of low quality are automatically marked‘unable to print’ EFTS Field 2.084 ‘UP’ designation Operator can manually adjust boxes drawn aroundsegmented fingersMarch 9 th , 2006 Auto-Capture Using Multi-Sampling - I/O Software 8

Annotation ToolFinger can bedesignated asamputated orunprintablebefore or afterauto-captureMarch 9 th , 2006 Auto-Capture Using Multi-Sampling - I/O Software 9

Moveable Segmentation BoxesSegmentationboxes can bemanuallyresized afterauto-captureMarch 9 th , 2006 Auto-Capture Using Multi-Sampling - I/O Software 10

Multisampling Capture ProcessOverviewAuto-Capture with Multisampling Image Capture ProcessTenPrint FlatsType-14FramesFrom ScannerLeft4 FingersStopFramesRight4 FingersFalseQualityComparatorsAnalyze Slapand ifImage Pixelquality >=ThresholdFalseAnalyze Slapand ifImage Pixelquality >=ThresholdFalseAnalyze Slapand ifImage Pixelquality >=ThresholdTrueSegmentation &ScoringMinutia Count CheckFinger Quality CheckUser Interventionneeded?UserInterfaceMarch 9 th , 2006 Auto-Capture Using Multi-Sampling - I/O Software 11

ConclusionsAuto-Capture Using Multi-Sampling reduces imagequality decisions made by operatorOperator no longer decides when to click captureQuality comparators can be optimized based on use caseUser interface needs to assist operator when subject’sfingerprints do not exceed minimum qualityAnnotation toolManually adjustable segmentation boxesMarch 9 th , 2006 Auto-Capture Using Multi-Sampling - I/O Software 12

References[1] Elham Tabassi, Charles L. Wilson, Craig I. Watson, Fingerprint Image Quality,NISTIR 7151, August 2004 (http://fingerprint.nist.gov/NFIS/ir_7151.pdf )[2] 10-Print Capture Scanner & Software Requirements Workshop, User Group(DHS, DOS, DOD, FBI, NIJ, NIST), October 2005,(http://www.itl.nist.gov/iad/894.03/pact/10pWS/10pWS01-Agenda_etc.pdf )March 9 th , 2006 Auto-Capture Using Multi-Sampling - I/O Software 13

Questions and Answers6711 Lee Hwy, Suite #214Arlington, VA 22205T: (703) 738-9267F: (703) 852-7914www.iosoftware.cominfo@iosoftware.comMarch 9 th , 2006 Auto-Capture Using Multi-Sampling - I/O Software 14