Fig. 2From: Unlinkable improved multi-biometric iris fuzzy vaultProposed iris-code to feature set transform: based on binary columns of a block and its corresponding block index, the transform f extracts feature elements from which a set of unique feature elements are generated. For example, for B=8, column 011001102=102, and index 0012=1, we get f(102,1)=817Back to article page