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Table 1 Iris classes defined based on k-means clustering and PCA

From: Iris classification based on sparse representations using on-line dictionary learning for large-scale de-duplication applications

# of Images in

CASIA1

IITD

UPOL

Class-1

196

525

81

Class-2

203

500

114

Class-3

196

595

69

Class-4

161

580

120