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Pore Sub-Features Reproducibility in Direct Microscopic and Livescan Images—Their Reliability in Personal Identification

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Third level features have been reported to have equal discriminatory power as second level details in establishing personal identification. Pore area, as an extended set third level sub-feature, has been studied by minimizing possible factors that could affect pore size. The reproducibility of pore surface area has been studied using direct microscopic and 500 ppi Livescan images. Direct microscopic pore area measurements indicated that the day on which the pore area was measured had a significant impact on the measured pore area. Pore area measurement was shown to be difficult to estimate in 500 ppi Livescan measurements owing to lack of resolution. It is not possible to reliably use pore area as an identifying feature in fingerprint examination.

Keywords: biometrics; direct microscopic images; fingerprints; forensic science; livescans; personal identification; poroscopy; third level detail

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1556-4029.2010.01422.x

Affiliations: 1School of Applied Sciences, University of Wolverhampton, Wolverhampton WV1 1LY, U.K.

Publication date: July 1, 2010

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