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An example of the LS pairing performance on FVC2000, at . (a) the histogram of

; (b) the histogram of

for pairwise features and (c) an illustration of the pairwise features as independent Gaussian density, from both LS and random pairing.

Chen and Veldhuis EURASIP Journal on Information Security 2011 2011:543106 doi:10.1155/2011/543106

Figure 14.