Journal Articles

1. [Hofbauer24a   ] Quality and Recognizability Estimation Video Encryption Database Heinz Hofbauer, Florent Autrusseau, Andreas Uhl Information Sciences 678, pp. 17, 2024
2. [Wimmer22b  ] Robustness of texture-based roundwood tracking Georg Wimmer, Rudolf Schraml, Heinz Hofbauer, Alexander Petutschnigg, Andreas Uhl European Journal of Wood and Wood Products 81, pp. 669-683, 2023
3. [Jalilian22b  ] Iris Image Compression Using Deep Convolutional Neural Networks Ehsaneddin Jalilian, Heinz Hofbauer, Andreas Uhl Sensors 22:7, pp. 2698, 2022
4. [Schraml20b  ] Towards fish individuality-based aquaculture Rudolf Schraml, Heinz Hofbauer, Ehsaneddin Jalilian, Dinara Bekkozhayeva, Mohammadmehdi Saberioon, Petr Cisar, Andreas Uhl IEEE Transactions on Industrial Informatics 17:6, pp. 4356-4366, 2021
5. [Hofbauer20a   ] Exploring Presentation Attack Vulnerability and Usability of Face Recognition Systems Heinz Hofbauer, Luca Debiasi, Susanne Kränkl, Andreas Uhl IET Biometrics 10:2, pp. 219-232, 2021
6. [Hofbauer21b   ] Low Quality and Recognition of Image Content Heinz Hofbauer, Florent Autrusseau, Andreas Uhl IEEE Transactions on Multimedia 24, pp. 16, 2021
7. [Hofbauer20b   ] To Recognize or not to Recognize --- A Database of Encrypted Images with Subjective Recognition Ground Truth Heinz Hofbauer, Florent Autrusseau, Andreas Uhl Information Sciences 551, pp. 128-145, 2020
8. [Hofbauer19a    ] Exploiting superior CNN-based iris segmentation for better recognition accuracy Heinz Hofbauer, Ehsaneddin Jalilian, Andreas Uhl Pattern Recognition Letters 120, pp. 17-23, 2019
9. [Rathgeb17a   ] Methods for Accuracy-preserving Acceleration of Large-Scale Comparisons in CPU-based Iris Recognition Systems Christian Rathgeb, Nicolas Buchmann, Heinz Hofbauer, Harald Baier, Andreas Uhl, Christoph Busch IET Biometrics 7:4, pp. 356-364, 2018
10. [Schraml16c   ] On rotational pre-alignment for tree log end identification using methods inspired by fingerprint and iris recognition Rudolf Schraml, Heinz Hofbauer, Alexander Petutschnigg, Andreas Uhl Machine Vision and Applications 27:8, pp. 1289-1298, 2016
11. [Hofbauer16a   ] Experimental Analysis Regarding the Influence of Iris Segmentation on the Recognition Rate Heinz Hofbauer, Fernando Alonso-Fernandez, Josef Bigun, Andreas Uhl IET Biometrics 5:3, pp. 200-211, 2016
12. [Hofbauer16c     ] Identifying Deficits of Visual Security Metrics for Images Heinz Hofbauer, Andreas Uhl Signal Processing: Image Communication 46, pp. 60-75, 2016
13. [Wild16a   ] Quality-based Iris Segmentation-level Fusion Peter Wild, Heinz Hofbauer, James Ferryman, Andreas Uhl EURASIP Journal on Information Security 2016:25, 2016
14. [DeCock14a   ] An Industry-Level Blu-ray Watermarking Framework Jan De Cock, Heinz Hofbauer, Thomas Stütz, Andreas Uhl, Andreas Unterweger Multimedia Tools and Applications 74:18, pp. 8079–8101, Springer US, 2014
15. [Hellwagner11a   ] Secure Transport and Adaptation of MC-EZBC Video Utilizing H.264-based Transport Protocols Hermann Hellwagner, Heinz Hofbauer, Robert Kuschnig, Thomas Stütz, Andreas Uhl Elsevier Journal on Signal Processing: Image Communication 27:2, pp. 192-207, 2011
16. [Hofbauer06a   ] Quasi Monte Carlo Integration in GRID Environments: Further Leaping Effects H. Hofbauer, A. Uhl, P. Zinterhof Parallel Processing Letters 16:3, pp. 285-311, 2006

Book Chapters

1. [Rathgeb16a   ] Design Decisions for an Iris Recognition SDK Christian Rathgeb, Andreas Uhl, Peter Wild, Heinz Hofbauer In Kevin Bowyer, Mark J. Burge, editors, Handbook of Iris Recognition, Advances in Computer Vision and Pattern Recognition, Springer, 2016
2. [Wild17a   ] Robust Iris Image Segmentation Peter Wild, Heinz Hofbauer, James Ferryman, Andreas Uhl In Christian Rathgeb, Christoph Busch, editors, Iris and Periocular Biometrics, pp. 57-83, London, UK, IET, 2016
3. [Hofbauer08a  ] Zinterhof Sequences in GRID-Based Numerical Integration H. Hofbauer, A. Uhl, P. Zinterhof In Alexander Keller, Stefan Heinrich, Harald Niederreiter, editors, Monte Carlo and Quasi-Monte Carlo Methods 2006, pp. 495-510, Springer-Verlag, 2008
4. [Hofbauer08b  ] A Pragmatic View on Numerical Integration of Unbounded Functions H. Hofbauer, A. Uhl, P. Zinterhof In Alexander Keller, Stefan Heinrich, Harald Niederreiter, editors, Monte Carlo and Quasi-Monte Carlo Methods 2006, pp. 511-528, Springer-Verlag, 2008

Conference Papers

1. [Schuiki24a   ] On the Influence of Texture Strength and Camera Signal on Micro-Texture Surface Classification Johannes Schuiki, Christof Kauba, Heinz Hofbauer, Andreas Uhl In Proceedings of the 12th International Workshop on Biometrics and Forensics (IWBF'24), pp. 1-6, Enschede, Netherlands, April 11 - April 12, 2024
2. [Lamminger23a  ] First Learning Steps to Recognize Faces in the Noise Lukas Lamminger, Heinz Hofbauer, Andreas Uhl In Proceedings of the 2023 ACM Workshop on Information Hiding and Multimedia Security, pp. 139–144, New York, NY, USA, IH&MMSec '23, Association for Computing Machinery, 2023
3. [Schuiki23d   ] Limiting Factors in Smartphone-Based Cross-Sensor Microstructure Material Classification Johannes Schuiki, Christof Kauba, Heinz Hofbauer, Andreas Uhl In 22th International Workshop on Digital-forensics and Watermarking (IWDW'23), pp. 33-47, Jinan, China, Springer LNCS, 14511, November 25 - November 26, 2023
4. [Schuiki23b   ] Cross-Sensor Micro-Texture Material Classification and Smartphone Acquisition do not go well together Johannes Schuiki, Christof Kauba, Heinz Hofbauer, Andreas Uhl In Proceedings of the 11th International Workshop on Biometrics and Forensics (IWBF'23), pp. 1-6, Barcelona, Spain, April 20 - April 21, 2023
5. [Schraml22a  ] CNN-based fish iris identification Rudolf Schraml, Georg Wimmer, Heinz Hofbauer, Ehsaneddin Jalilian, Andreas Uhl, Dinara Bekkozhayeva, Petr Cisar In Proceedings of the 30th European Signal Processing Conference (EUSIPCO 2022)Belgrad, Serbia, Augest 29 - September 2, 2022
6. [Wimmer22a   ] An analysis of the use of hyperspectral data for roundwood tracking Georg Wimmer, Rudolf Schraml, Heinz Hofbauer, Alexander Petutschnigg, Andreas Uhl In Computational Science and Its Applications - ICCSA 2022 Workshops, pp. 294–307, Malaga, Springer LNCS, 13379, July 4 - July 7, 2022
7. [Hofbauer22a   ] Utilizing CNNs for Cryptanalysis of Selective Biometric Face Sample Encryption Heinz Hofbauer, Yoanna Martínez-Díaz, Luis Santiago Luevano, Heydi Méndez-Vázquez, Andreas Uhl In Proceedings of the 26th International Conference on Pattern Recognition (ICPR), pp. 8, August 21 - August 25, 2022
8. [Wimmer21a  ] Two-Stage CNN-Based Wood Log Recognition Georg Wimmer, Rudolf Schraml, Heinz Hofbauer, Alexander Petutschnigg, Andreas Uhl In Computational Science and Its Applications -- ICCSA 2021, pp. 115-125, Cham, LNCS, 12955, Springer International Publishing, 2021
9. [Jalilian21a   ] Deep Iris Compression Ehsaneddin Jalilian, Heinz Hofbauer, Andreas Uhl In Pattern Recognition. ICPR International Workshops and Challenges, Proceedings, Part V, pp. 1-15, Milan, Italy, LNCS, 12565, Springer, January 10 - January 15, 2021
10. [Hofbauer21a     ] Highly Efficient Protection of Biometric Face Samples with Selective JPEG2000 Encryption Heinz Hofbauer, Yoanna Martínez-Díaz, Simon Kirchgasser, Heydi Méndez-Vázquez, Andreas Uhl In Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '21, pp. 5, 2021
11. [Debiasi20a  ] Presentation Attacks and Detection in Finger- and Hand-Vein Recognition Luca Debiasi, Christof Kauba, Heinz Hofbauer, Bernhard Prommegger, Andreas Uhl In Proceedings of the Joint Austrian Computer Vision and Robotics Workshop (ACVRW'20), pp. 65-70, Graz, Austria, September 17 - September 18, 2020
12. [Kirchgasser20a   ] Template Protection on Multiple Facial Biometrics in the Signal Domain under Visible and Near-Infrared Light Simon Kirchgasser, Luca Debiasi, Rudolf Schraml, Heinz Hofbauer, Andreas Uhl, Jonathan Boyle, James Ferryman In Proceedings of the IEEE 8th International Workshop on Biometrics and Forensics (IWBF'20), pp. 1-6, Porto, Portugal, April 29 - April 30, 2020
13. [Shekhawat20a  ] Efficient Fingervein Sample Image Encryption Sanjay Shekhawat, Heinz Hofbauer, Bernhard Prommegger, Andreas Uhl In Proceedings of the 8th International Workshop on Biometrics and Forensics (IWBF'20), pp. 1-6, Porto, Portugal, April 29 - April 30, 2020, Shortlisted for best paper award
14. [Hofbauer19b    ] Mobile Face Recognition Systems: Exploring Presentation Attack Vulnerability and Usability Heinz Hofbauer, Luca Debiasi, Andreas Uhl In Proceedings of the 12th IAPR/IEEE International Conference on Biometrics (ICB'19)Crete, Greece, 2019
15. [Hofbauer18a     ] Applicability of No-Reference Visual Quality Indices for Visual Security Assessment Heinz Hofbauer, Andreas Uhl In Proceedings of the 6th ACM Workshop on Information Hiding and Multimedia Security (IH&MMSec 2018), pp. 139-144, 2018
16. [Hofbauer18b     ] Mobile NIR Iris Recognition: Identifying Problems and Solutions Heinz Hofbauer, Ehsaneddin Jalilian, Ana F. Sequeira, James Ferryman, Andreas Uhl In Proceedings of the IEEE 9th International Conference on Biometrics: Theory, Applications, and Systems (BTAS 2018), pp. 9, October 22 - October 25, 2018
17. [Hofbauer18c   ] To See or Not To See: Determining the Recognition Threshold of Encrypted Images Heinz Hofbauer, Florent Autrusseau, Andreas Uhl In Proceedings of 7th European Workshop on Visual Information Processing (EUVIP'18), pp. 6, 2018
18. [Drozdowski17a  ] Towards Pre-alignment of Near-infrared Iris Images P. Drozdowski, C. Rathgeb, H. Hofbauer, J. Wagner, A. Uhl, C. Busch In Proceedings of the IAPR/IEEE International Joint Conference on Biometrics (IJCB'17), pp. 8, 2017
19. [Hofbauer16b    ] Calculating a boundary for the Significance from the Equal-Error Rate Heinz Hofbauer, Andreas Uhl In Proceedings of the 9th IAPR/IEEE International Conference on Biometrics (ICB'16), pp. 1-4, 2016
20. [Rathgeb16b   ] TripleA: Accelerated Accuracy-preserving Alignment for Iris-Codes Christian Rathgeb, Heinz Hofbauer, Andreas Uhl, Christoph Busch In Proceedings of the 9th IAPR/IEEE International Conference on Biometrics (ICB'16), pp. 1-8, 2016
21. [Hofbauer16d     ] Isolating Iris Template Ageing in a Semi-controlled Environment Heinz Hofbauer, Inmaculada Tomeo-Reyes, Andreas Uhl In Proceedings of the International Conference of the Biometrics Special Interest Group (BIOSIG'16), pp. 8, Darmstadt, Germany, September 21 - 23, 2016
22. [Schraml15c    ] Tree Log Identification Based on Digital Cross-Section Images of Log Ends Using Fingerprint and Iris Recognition Methods Rudolf Schraml, Heinz Hofbauer, Alexander Petutschnigg, Andreas Uhl In Proceedings of the 16th International Conference on Computer Analysis of Images and Patterns (CAIP'15), pp. 752-765, LNCS, Springer Verlag, 2015
23. [Hofbauer15a  ] Encrypting Only AC Coefficient Signs considered Harmful Heinz Hofbauer, Andreas Unterweger, Andreas Uhl In Proceedings of the IEEE International Conference on Image Processing (ICIP'15)2015
24. [Hofbauer15b  ] Investigation of Better Portable Graphics Compression for Iris Biometric Recognition Heinz Hofbauer, Christian Rathgeb, Johannes Wagner, Andreas Uhl, Christoph Busch In Proceedings of the International Conference of the Biometrics Special Interest Group (BIOSIG'15), pp. 8, Darmstadt, Germany, September 9 - 11, 2015
25. [Wild15a  ] Segmentation-level Fusion for Iris Recognition Peter Wild, Heinz Hofbauer, James Ferryman, Andreas Uhl In Proceedings of the International Conference of the Biometrics Special Interest Group (BIOSIG'15), pp. 12, Darmstadt, Germany, September 9 - 11, 2015
26. [Hofbauer14a  ] Transparent Encryption for HEVC Using Bit-Stream-Based Selective Coefficient Sign Encryption Heinz Hofbauer, Andreas Uhl, Andreas Unterweger In 2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp. 1986-1990, Florence, Italy, IEEE, May 2014
27. [Hofbauer14b   ] A Ground Truth for Iris Segmentation Heinz Hofbauer, Fernando Alonso-Fernandez, Peter Wild, Josef Bigun, Andreas Uhl In Proceedings of the 22th International Conference on Pattern Recognition (ICPR'14), pp. 6pp., Stockholm, Sweden, August 24 - 28, 2014
28. [Hofbauer12b  ] Image Metric-based Biometric Comparators: A Supplement to Feature Vector-based Hamming Distance? Heinz Hofbauer, Christian Rathgeb, Andreas Uhl, Peter Wild In Proceedings of the International Conference of the Biometrics Special Interest Group (BIOSIG'12), pp. 1-5, Darmstadt, Germany, September 6 - 7, 2012
29. [Hofbauer12a  ] Iris Recognition in Image Domain: Quality-metric based Comparators Heinz Hofbauer, Christian Rathgeb, Andreas Uhl, Peter Wild In Proceedings of the 8th International Symposium on Visual Computing (ISVC'12), pp. 1-10, Crete, Greece, July 16 - 18, 2012
30. [Hofbauer11a   ] An Effective and Efficient Visual Quality Index based on Local Edge Gradients Heinz Hofbauer, Andreas Uhl In IEEE 3rd European Workshop on Visual Information Processing, pp. 6pp., Paris, France, July 4-6,2011
31. [Stuetz10d  ] Subjective and Objective Quality Assessment of Transparently Encrypted JPEG2000 Images Thomas Stütz, Vinod Pankajakshan, Florent Autrusseau, Andreas Uhl, Heinz Hofbauer In Proceedings of the ACM Multimedia and Security Workshop (MMSEC '10), pp. 247-252, Rome, Italy, ACM, September 9 - 10, 2010
32. [Hofbauer10b   ] Selective Encryption of the MC-EZBC Bitstream and Residual Information Heinz Hofbauer, Andreas Uhl In 18th European Signal Processing Conference, 2010 (EUSIPCO-2010), pp. 2101-2105, Aalborg, Denmark, August 23 - 27, 2009, 2010
33. [Hofbauer10a  ] Visual Quality Indices and Low Quality Images Heinz Hofbauer, Andreas Uhl In IEEE 2nd European Workshop on Visual Information Processing, pp. 171-176, Paris, France, July 5-7,2010
34. [Hofbauer09b  ] The Cost of In-Network Adaption of the MC-EZBC for Universal Multimedia Access Heinz Hofbauer, Andreas Uhl In Proceedings of the 6th International Symposium on Image and Signal Processing and Analysis (ISPA '09)Salzburg, Austria, September 16 - 18, 2009
35. [Hofbauer09a   ] Selective Encryption of the MC EZBC Bitstream for DRM Scenarios Heinz Hofbauer, Andreas Uhl In Proceedings of the 11th ACM Workshop on Multimedia and Security, pp. 161-170, Princeton, New Jersey, USA, ACM, September 7 - 8, 2008, 2009
36. [Hofbauer09c  ] Secure Scalable Video Compression for GVid H. Hofbauer, T. Stütz, A. Uhl In J. Volkert, T. Fahringer, D. Kranzlmüller, R. Kobler, W. Schreiner, editors, Proceedings of the 3rd Austrian Grid Symposium, pp. 88-102, Linz, Austria, books@ocg.at, 269, Austrian Computer Society, September, 28-29, 2009
37. [Hofbauer07a  ] Parameterization of Zinterhof Sequences for GRID-based QMC Integration H. Hofbauer, A. Uhl, P. Zinterhof In J. Volkert, T. Fahringer, D. Kranzlmüller, W. Schreiner, editors, Proceedings of the 2nd Austrian Grid Symposium, pp. 91-105, Innsbruck, Austria, books@ocg.at, 221, Austrian Computer Society, 2007
38. [Hofbauer06c  ] Selective Encryption for hierarchical MPEG Heinz Hofbauer, Thomas Stütz, Andreas Uhl In H. Leitold, E. Markatos, editors, Communications and Multimedia Security, Proceedings of the 10th IFIP International CMS 2006 Conference, pp. 151-160, Lecture Notes on Computer Science, 4237, Springer Verlag, Oct. 2006
39. [Hofbauer06b  ] Quasi-Monte Carlo Integration on GRIDS: Using blocked Substreams H. Hofbauer, A. Uhl, P. Zinterhof In J. Volkert, T. Fahringer, D. Kranzlmüller, W. Schreiner, editors, Proceedings of the 1st Austrian Grid Symposium, pp. 219-233, Schloss Hagenberg, Austria, books@ocg.at, 210, Austrian Computer Society, 2006

Technical Reports

1. [Schraml15a  ] Tree log identification based on digital cross-section images of log ends using fingerprint and iris recognition methods Rudolf Schraml, Heinz Hofbauer, Andreas Uhl Department of Computer Sciences, University of Salzburg, Austriahttp://www.cosy.sbg.ac.at/tr, Technical Report 2015-01, 2015

Theses

1. [Hofbauer13b  ] Visual Evaluation, Scaling and Transport of Secure Videos Heinz Hofbauer PhD thesis, University of Salzburg, Department of Computer Sciences, April 2013
2. [Hofbauer07b  ] Improper Integrals and QMC Integration in a Grid Environemnt Heinz Hofbauer Master thesis, University of Salzburg, Department of Computer Sciences, Dec. 2007