Metric Identification of the Same People from Images: How Reliable Is It?

Table 5

Euclidean distances between all males (n = 20) of all ten ratios taken from high and low quality images by the same person. A measure is whether the ratios of each individual exceed two times the TEM for that particular ratio.

	High quality
	Subject number	P1	P2	P3	P4	P5	P6	P7	P8	P9	P10	P11	P12	P13	P14	P15	P16	P17	P18	P19	P20
Low quality	P1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	0	0	0	0
	P2	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	1	0	0	0	0
	P3	1	1	1	1	1	1	0	1	1	1	0	0	0	1	1	2	1	0	0	1
	P4	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0
	P5	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0
	P 6	0	0	1	0	1	1	1	1	1	0	1	1	1	0	1	2	1	1	1	1
	P7	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0
	P8	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	0	0
	P9	0	0	0	0	0	0	0	0	1	0	1	1	0	0	0	1	1	1	1	0
	P10	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	2	0	0	0	0
	P11	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	1	0	0	1	0
	P12	1	0	0	0	1	0	0	0	1	1	1	1	0	0	1	2	1	1	1	1
	P13	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0
	P14	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	2	1	1	1	1
	P15	0	0	0	0	1	1	1	1	2	1	3	1	1	1	0	2	1	1	1	1
	P16	0	0	0	0	0	0	0	0	0	0	1	1	0	0	0	1	1	1	1	0
	P17	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	1	0
	P18	0	1	0	0	1	0	0	0	0	1	1	0	1	1	1	1	1	0	0	1
	P19	0	0	0	0	0	0	0	0	0	0	1	0	0	0	1	0	0	0	0	0
	P20	1	1	1	1	1	1	1	1	2	2	2	2	1	1	2	2	2	2	2	1

Note. “0” indicates a match; anything greater than or equal to 1 indicates a nonmatch.