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The reliability of fingerprint pore area in personal identification
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|Title: ||The reliability of fingerprint pore area in personal identification|
|Advisors: ||Sutton, Raul|
|Publisher: ||University of Wolverhampton|
|Issue Date: ||2008 |
|Abstract: ||Reproducibility of third level fingerprint detail is important in personal identification.
The effect of different substrates on the reproducibility of pore dimensions in inked
reference fingerprints was investigated. Photomicrographs of reference prints were
taken and pore area was measured repeatedly using appropriate software.
Reproducibility of pore area was also studied in latent prints. Latent prints were
deposited on chosen absorbent and non-absorbent surfaces and developed using
Cyanoacrylate and Ninhydrin to determine pore area reproducibility.
Photomicrographs of ridged skin were captured directly by focusing under
microscope and pore area reproducibility in these images was studied. Live scans
were also included in the study to see if pore area can be relied upon in live scans at
500ppi (pixels per inch).
Results revealing best third level detail in inked prints were achieved by deposition
onto a variety of non-absorbent substrates but inter-print variation indicated that pore
area in inked prints deposited onto paper substrates cannot be used reliably in
personal identification. In case of latent prints, variation was greater than normal
acceptable limits suggesting that pore area is not reproducible in latent prints
developed using Cyanoacrylate and Ninhydrin techniques.
Results of direct microscopic images also showed too great inter-image variation
which has further supported the unreliability of pore area as a tool in personal
identification. Live scans at 500ppi did not prove to be useful in providing good pore
detail for study. This study casts doubt on the use of pore area as a reliable
identification tool in personal identification and suggests raising the scanning
resolution to study pore detail in live scans.|
|Type: ||Thesis or dissertation|
|Description: ||A Thesis Submitted in partial fulfilment of the requirement of the University of
Wolverhampton for the degree of Master of Philosophy|
Fingerprint pore area reproducibility
Third level detail
Direct microscopic images
|Appears in Collections: ||E-Theses|
|Files in This Item:|
|Gupta_MPhil thesis.pdf||22367Kb||Adobe PDF|
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