Christian Rathgeb

Christian Rathgeb, PhD

Position: PostDoc
Office: D19 room 2.02
Email: christian.rathgeb -at- {,}
Telephone: +49 6151 16 30085

Dr. Christian Rathgeb is a Senior Researcher with the Faculty of Computer Science, Hochschule Darmstadt, Germany. He is a Principal Investigator in the Center for Research in Security and Privacy (CRISP) and a Program Chair of the Internaltional Conference of the Biometrics Special Interest Group (BIOSIG).

Research Interests

  • Biometrics
  • Iris and face recognition
  • Privacy-enhancing technologies

Current Offerings

For a list of further currently offered bachelor- and master theses, please have a look at this page. If you may have a specific topic related to my research interests in mind that is not listed on the aforementioned page, please get in touch with me by email.



  • USIT – University of Salzburg Iris Toolkit v2.0 is a Windows/Linux software package for iris recognition which comprises algorithms for (1) iris pre-processing, (2) feature extraction, and (3) feature comparison.

Selected Publications


  • Christian Rathgeb, Christoph Busch, „Iris and Periocular Biometric Recognition“, In IET Biometrics Series, IET, 2017.
  • Christian Rathgeb, Andreas Uhl, Peter Wild, „Iris Recognition: From Segmentation to Template Security“, In Advances in Information Security 59. Springer, New York, 2012.

Journal Articles

  • Ulrich Scherhag, Christian Rathgeb, Johannes Merkle, Ralph Breithaupt, Christoph Busch, „Face Recognition Systems under Morphing Attacks: A Survey“, in IEEE Access, 2019.
  • Christian Rathgeb, Johannes Wagner, Christoph Busch, „SIFT-based iris recognition revisited: prerequisites, advantages and improvements“, in Pattern Analysis and Applications, Springer, 2018.
  • Marta Gomez-Barrero, Christian Rathgeb, Ulrich Scherhag, Christoph Busch, „Predicting the Vulnerability of Biometric Systems to Attacks based on Morphed Biometric Information“, In IET Biometrics, 2018.
  • Marta Gomez-Barrero, Javier Galbally, Christian Rathgeb, Christoph Busch, „General Framework to Evaluate Unlinkability in Biometric Template Protection Systems“, In IEEE Trans. on Information Forensics and Security, vol. 3, no. 6, pp. 1406-1420, 2018.
  • Marta Gomez-Barrero, Christian Rathgeb, Guoqiang Li, R. Raghavendra, Javier Galbally, Christoph Busch, „Multi-Biometric Template Protection Based on Bloom Filters“, In Information Fusion, Vol. 42, 2018.
  • Christian Rathgeb, Nicolas Buchmann, Heinz Hofbauer, Harald Baier, Andreas Uhl, Christoph Busch, „Methods for Accuracy-preserving Acceleration of Large-Scale Comparisons in CPU-based Iris Recognition Systems“, In IET Biometrics, 2017
  • Pawel Drozdowski, Christian Rathgeb, Christoph Busch, „Bloom Filter-based Search Structures for Indexing and Retrieving Iris-Codes“, In IET Biometrics, 2017.
  • Christian Rathgeb, Anika Pflug, Johannes Wagner, Christoph Busch, „Effects of image compression on ear biometrics“, In IET Biometrics, 5(3), 2016.
  • Christian Rathgeb, Benjamin Tams, Johannes Wagner, Christoph Busch, „Unlinkable Improved Multi-Biometric Iris Fuzzy Vault“, In EURASIP Journal on Information Security, 2016.
  • Marta Gomez-Barrero, Christian Rathgeb, Javier Galbally, Christoph Busch, Julian Fierrez, „Unlinkable and Irreversible Biometric Template Protection based on Bloom filters“, In Information Sciences, Vol. 370-371, pp. 18-32, 2016.
  • Christian Rathgeb, Christoph Busch, „Cancelable Multi-Biometrics: Mixing Iris-Codes based on Adaptive Bloom Filters“, In Elsevier Computers and Security 42(0), 2014.
  • Christian Rathgeb, Frank Breitinger, Christoph Busch, Harald Baier, „On the Application of Bloom Filters to Iris Biometrics“, In IET Biometrics 3(1), 2014.
  • Christian Rathgeb, Andreas Uhl, „Statistical Attack against Fuzzy Commitment Scheme“, In IET Biometrics 1(2), 2012.
  • Christian Rathgeb, Andreas Uhl, „A Survey on Biometric Cryptosystems and Cancelable Biometrics, In EURASIP Journal on Information Security, 2011.
  • Christian Rathgeb, Andreas Uhl, „Context-based Biometric Key-Generation for Iris“, In IET Computer Vision (Special Issue on Future Trends in Biometric Processing), 5(6), IET, 2011.

Book Chapters

  • Christian Rathgeb, Christoph Busch, „Biometric Template Protection: State-of-the-Art, Issues, and Challenges“,  In User-Centric Privacy and Security in Biometrics, IET, 2017.
  • Christian Rathgeb, Johannes Wagner, Christoph Busch, „Iris Biometric Template Protection“, In Iris and Periocular Biometric Recognition, IET, 2017.
  • Christian Rathgeb, Christoph Busch, „Fundamentals in Iris Recognition“, In Iris and Periocular Biometric Recognition, IET, 2017.
  • Christian Rathgeb, Andreas Uhl, Peter Wild, Heinz Hofbauer, „Design Decisions in an Iris Recognition SDK“, In Handbook of Iris Recognition (2nd Edition), Springer, 2016.
  • Nicolas Buchmann, Christian Rathgeb, Roel Peeters, Harald Baier, Christoph Busch, „BioPACE: Biometric-Protected Authentication Connection Establishment“, In Advances in Security and Privacy of Biometrics Systems, Cambridge Scholars Publishing, 2015.
  • Christian Rathgeb, Andreas Uhl, Christoph Busch, „Ageing Effects and Implications for Biometric Template Protection“, In Age Factors in Biometric Processing, IET, 2012.
  • Christian Rathgeb, Christoph Busch, „Multibiometric Template Protection: Issues and Challenges“, In New Trends and Developments in Biometrics, InTech, 2012.
  • Christian Rathgeb, Andreas Uhl, „The State-of-the-Art in Iris Biometric Cryptosystems“, In State of the art in Biometrics, InTech, 2011

Conference and Workshop Papers