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Evidence evaluation in fingerprint comparison and automated fingerprint identification systems—Modelling within finger variability  Nicole M. Egli, Christophe.

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Presentation on theme: "Evidence evaluation in fingerprint comparison and automated fingerprint identification systems—Modelling within finger variability  Nicole M. Egli, Christophe."— Presentation transcript:

1 Evidence evaluation in fingerprint comparison and automated fingerprint identification systems—Modelling within finger variability  Nicole M. Egli, Christophe Champod, Pierre Margot  Forensic Science International  Volume 167, Issue 2, Pages (April 2007) DOI: /j.forsciint Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

2 Fig. 1 Illustration of the 6 peripheral minutiae.
Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

3 Fig. 2 Illustration of the 10 peripheral minutiae.
Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

4 Fig. 3 Illustration of the 6 central minutiae.
Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

5 Fig. 4 Illustration of the 10 central minutiae.
Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

6 Fig. 5 Probability plot between scores obtained from 66 livescans and a Weibull distribution. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

7 Fig. 6 Weibull probability plot of the scores obtained using 6 minutiae on marks visualised using DFO compared to 15 fingerprints of the same finger. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

8 Fig. 7 Boxplots of scores for 6 minutiae on livescans (Lsc) and marks visualized using four methods (CA, powder, Ninhydrin and DFO) as well as a random selection of marks visualised using any of the four methods (All). Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

9 Fig. 8 Histograms of the scores obtained for 6, 7, 8, 9 and 10 minutiae in a peripheral region. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

10 Fig. 9 Histograms of the scores obtained for 6, 7, 8, 9 and 10 minutiae in a central region. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

11 Fig. 10 Weibull probability plot for 7 minutiae in central region.
Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

12 Fig. 11 Tippett plot obtained using the scores for 7 minutiae.
Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

13 Fig. 12 The mark (a) and the print (b) considered in the case example.
Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

14 Fig. 13 Lognormal probability plot for between finger variability on 7 minutiae in the peripheral region. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions

15 Fig. 14 Within and between finger scores distribution with the score of the comparison indicated. Forensic Science International  , DOI: ( /j.forsciint ) Copyright © 2006 Elsevier Ireland Ltd Terms and Conditions


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