Fig. 6From: Fingerprint template protection using minutia-pair spectral representationsComparison of ZLHDS with N=2 versus N=3. Lines without markers: Mutual information between the enrolled key S and the reconstructed key \(\hat {S}\) given helper data W, as a function of σV/σX. Markers: bit error rate as a function of σV/σX. The curves follow equations (22) and (26) from [20]Back to article page