Skip to main content

Table 5 Mean pore center-to-center distance, standard deviation (S. D.), and % coefficient of variation (% C.V.) of four pores, taken from fingerprints obtained from the left thumb of four individuals on glass, recorded on ten consecutive days, shows % C. V. to lie within and/or near acceptable levels (with 5% confidence level in analytical work), thereby demonstrating the reliability and reproducibility of pore inter-distance for matching fingerprints

From: Reproducibility of fingerprint microfeatures

Center-to-center length Mean pore-to-pore distance taken from centre (μm) S. D. % C. V.
Individual 1 Pore1-Pore2 340.95 8.91 2.61
Pore2-Pore3 252.37 11.13 4.41
Pore3-Pore4 209.59 14.82 7.07
Individual 2 Pore1-Pore2 389.86 18.38 4.71
Pore2-Pore3 404.85 12.56 3.10
Pore3-Pore4 299.80 18.79 6.27
Individual 3 Pore1-Pore2 440.92 23.51 5.33
Pore2-Pore3 430.40 14.12 3.28
Pore3-Pore4 373.00 16.67 4.47
Individual 4 Pore1-Pore2 395.33 16.17 4.09
Pore2-Pore3 382.09 16.84 4.40
Pore3-Pore4 236.61 20.80 8.79