Minutia-pair spectral representations for fingerprint template protection
This work addresses template protection for fingerprint biometric systems, but it is incremental as it builds on prior spectral minutiae representations with minor enhancements.
The paper tackled the problem of fingerprint template protection by introducing a new fixed-length representation based on minutia-pair coordinate differences, which retains phase information and achieves comparable matching performance (Equal Error Rate) with improved speed compared to existing spectral minutiae methods.
We introduce a new fixed-length representation of fingerprint minutiae, for use in template protection. It is similar to the `spectral minutiae' representation of Xu et al. but is based on coordinate differences between pairs of minutiae. Our technique has the advantage that it does not discard the phase information of the spectral functions. We show that the fingerprint matching performance (Equal Error Rate) is comparable to that of the original spectral minutiae representation, while the speed is improved.