Auflistung nach Autor:in "Ihmor, Heinrich"
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- KonferenzbeitragBSI-Studien1 zum Potenzial multibiometrischer Systeme(BIOSIG 2007: biometrics and electronic signatures, 2007) Ihmor, HeinrichAnfang dieses Jahrzehnts wurden vom BSI verschiedene Untersuchungen zu biometrischen Systemen durchgeführt, insbesondere zu deren Performanz. Offen gebliebenen war u. a. die Frage, in welchem Maße sich die Performanz steigern lässt, wenn je Person mehrere Merkmale verwendet werden. Die erste simulative Untersuchung hierzu (BioFinger 2) verwendete je Person mehrere Fingerabdrücke. Mit den daraus gewonnen Erkenntnissen wurden in einer weiteren Untersuchung (BioMulti) Finger-, Iris- und Gesichtserkennung zu multimodalen Systemen gekoppelt und untersucht. Es wird eine Übersicht zu den Methoden und Ergebnissen der Arbeiten vorgestellt.
- KonferenzbeitragPerformance of the fuzzy vault for multiple fingerprints(BIOSIG 2010: Biometrics and Electronic Signatures. Proceedings of the Special Interest Group on Biometrics and Electronic Signatures, 2010) Merkle, Johannes; Niesing, Matthias; Schwaiger, Michael; Ihmor, Heinrich; Korte, UlrikeThe fuzzy vault is an error tolerant authentication method that ensures the privacy of the stored reference data. Several publications have proposed the application of the fuzzy vault to fingerprints, but the results of subsequent analyses indicate that a single finger does not contain sufficient information for a secure implementation. In this contribution, we present an implementation of a fuzzy vault based on minutiae information in several fingerprints aiming at a security level comparable to current cryptographic applications. We analyze and empirically evaluate the security, efficiency, and robustness of the construction and several optimizations. The results allow an assessment of the capacity of the scheme and an appropriate selection of parameters.
- KonferenzbeitragA reference framework for the privacy assessment of keyless biometric template protection systems(BIOSIG 2010: Biometrics and Electronic Signatures. Proceedings of the Special Interest Group on Biometrics and Electronic Signatures, 2010) Kevenaar, Tom; Korte, Ulrike; Merkle, Johannes; Niesing, Matthias; Ihmor, Heinrich; Busch, Christoph; Zhou, XuebingOver the past decades, a number of methods have been reported in the scientific literature to protect the privacy of biometric information stored in biometric systems. Keyless Biometric Template Protection (KBTP) methods aim to protect biometric information without the use of long-term secrets by deploying one-way functions. These KBTP methods are currently developed to an extent that commercial products have become available. When assessing and comparing different KBTP methods it is important to have a common and generic approach. Therefore, in this paper we present a reference framework that can be used in assessing and comparing the privacy properties of KBTP systems.