Alignment-Free Iris Cancellable Template Protection Scheme Based on Code-Blocks Encoding

Published: 2023, Last Modified: 28 May 2026CCBR 2023EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: This paper introduces a novel irisCode template protection scheme, integrating the Indexing First One (IFO) hashing and Bloom filter methodologies. The scheme eliminates pre-alignment needs, while a proposed bit-binding strategy extends the IFO hashed code’s utility for biometric cryptosystems without explicit error correction code construction. This strategy ensures authentication accuracy by preserving the Jaccard distance between input irisCodes. Testing on the CASIA v3-interval database confirms the superior performance of our approach over existing iris recognition methods.
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