Fingerprint Identification

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Fingerprint Identification. FBI carries 198 million fingerprints on record Used for unique identification of a person - PowerPoint PPT Presentation

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  • Fingerprint Identification

    FBI carries 198 million fingerprints on record

    Used for unique identification of a person

    First gained credibility when used to identify William West, who looked almost physically identical to a man named Will West (another inmate). The guards used fingerprints to successfully differentiate between the two prisoners.

  • ArchLeft LoopRight LoopTented ArchWhorlThe 5 Classifications

  • To more closely identify a fingerprint, the ends of the swirls (minutiae) are mapped.The distances between minutiae are stored using a Euclidean algorithm or what the FBI uses (D9/7 wavelet based system)

  • Enhance the imageCalculate minutiae distancesCompareRotating image destroys accuracy!!

  • You might ask..

  • What does this have to do with Data Structures ??

  • ArchLeft LoopRight LoopTented ArchWhorl

  • Hash( minutiae.value )

  • Hash( minutiae.value )

  • This allows for quick fingerprint identificationSome verification is required to check for error (recall fingerprints being rotated)

  • References:http://www.ccc.de/biometrie/fingerabdruck_kopieren.xml?language=enhttp://cryptome.org/gummy.htmhttp://www.optel.com.pl/article/english/article.htmhttp://cryptome.org/fake-prints.htmhttp://computer.howstuffworks.com/fingerprint-scanner6.htmhttp://biometrics.cse.msu.edu/fingerprint.htmlhttp://www.crimtrac.gov.au/fingerprintanalysis.htmhttp://en.wikipedia.org/wiki/Fingerprinthttp://www.nist.gov/srd/fing_img.htmhttp://www.barcode.ro/tutorials/biometrics/fingerprint.htmlhttp://www.fingerprints.tk/http://www.fbi.gov/lawenforce.htmhttp://engr.smu.edu/~rewini/http://fingerprint.nist.gov/NFIS/http://www.communitycenter.dsu.edu/biometrics/PROSECTION%20fingerprint.jpg

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