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Table 2 Number of matches in each database comparison.

From: Iris Recognition: The Consequences of Image Compression

Compared databases

Genuine matches

Imposter matches

Total matches

Original versus Original

26,656

4,329,020

4,355,676

Original versus 25 : 1

29,650

4,329,068

4,358,628

Original versus 50 : 1

29,549

4,329,079

4,358,628

Original versus 75 : 1

30,876

4,327,749

4,358,625

Original versus 100 : 1

31,119

4,327,506

4,358,625

25 : 1 versus 25 : 1

26,600

4,329,076

4,355,676

25 : 1 versus 50 : 1

29,527

4,329,101

4,358,628

25 : 1 versus 75 : 1

30,862

4,327,763

4,358,625

25 : 1 versus 100 : 1

31,106

4,327,519

4,358,625

50 : 1 versus 50 : 1

26,617

4,329,059

4,355,676

50 : 1 versus 75 : 1

30,886

4,327,739

4,358,625

50 : 1 versus 100 : 1

31,136

4,327,489

4,358,625

75 : 1 versus 75 : 1

26,609

4,323,166

4,349,775

75 : 1 versus 100 : 1

29,804

4,322,291

4,352,725

100 : 1 versus 100 : 1

26,692

4,323,083

4,349,775