Patents

1. Adam Czajka, Andrzej Pacut, Marcin Chochowski, ''Method of Eye Aliveness Testing and Device for Eye Aliveness Testing'', US Patent No. 8,061,842. November 22, 2011 (PDF)

Doctoral dissertations

1. Mateusz Trokielewicz, ''Iris recognition methods resistant to biological changes in the eye'', Advisor: Adam Czajka, Ph.D., D.Sc., defended on June 18, 2019 (PDF)

Patent applications

1. Adam Czajka, Andrzej Pacut, Marcin Chochowski, ''Sposób testowania żywotności oka i urządzenie do testowania żywotności oka''. Polish Patent Application, September 7, 2006. Published in BUP 6/2008 on 17.03.2008
2. Adam Czajka, Andrzej Pacut, Marcin Chochowski, PCT Application No. PCT/PL2007/000063 wynalazku ''Method of Eye Aliveness Testing and Device for Eye Aliveness Testing''. Published by WIPO at WO/2008/030127, application date: June 12, 2008
3. Adam Czajka, Andrzej Pacut, Marcin Chochowski, European Patent Application No. EP07793967.6 wynalazku "Method of Eye Aliveness Testing and Device for Eye Aliveness Testing", application date: June 10, 2009

Book chapters

1. Adam Czajka, Benedict Becker, "Application of Dynamic Features of the Pupil for Iris Presentation Attack Detection", in: Sébastien Marcel, Mark Nixon, Julian Fierrez, Nicholas Evans (Eds.), "Handbook of Biometric Anti-Spoofing (2nd Edition)", 2018 (Buy the book)
   
   This Chapter follows the reproducible research requirements and offers the following supplementary materials:
   • Database of pupil measurements (Warsaw-BioBase-Pupil-Dynamics v2.1),
   • presentation attack detection scores and codes for Clynes and Kohn parametric model and recurrent neural network-based model.
2. Allan Pinto, Helio Pedrini, Michael Krumdick, Benedict Becker, Adam Czajka, Kevin W. Bowyer, and Anderson Rocha, "Counteracting Presentation Attacks in Face, Fingerprint, and Iris Recognition", in: Vatsa et al. (Eds.), "Deep Learning in Biometrics", CRC Press, March 2018 (PDF)
3. Adam Czajka, "Iris Liveness Detection by Modeling Dynamic Pupil Features", in: Kevin W. Bowyer, Mark J. Burge (Eds.), Handbook of Iris Recognition, Second Edition, pp. 439-467, Springer-Verlag London, 2016 (PDF)
4. Adam Czajka, "Influence of Iris Template Aging on Recognition Reliability", Communications in Computer and Information Science, Volume 452, pp. 284-299, Springer, November 2014 (PDF)
5. Adam Czajka and Andrzej Pacut, ''Iris Recognition with Adaptive Coding'', Rough Sets and Knowledge Technology, Lecture Notes in Artificial Intelligence, Vol. 4481, pp. 195-202, Springer, 2007 (PDF)
6. Andrzej Pacut, Adam Czajka, Przemek Strzelczyk, ''Iris biometrics for secure remote access'', in: J.S. Kowalik et al. (Ed.), Cyberspace Security and Defense: Research Issues, pp. 259-278, Springer, 2005 (PDF)
7. Adam Czajka, Andrzej Pacut, ''Biometria tęczówki oka'', w: Paweł Zając, Stanisław Kwaśniowski (Red.) Automatyczna identyfikacja w systemach logistycznych, Roz. 7.4, str. 214-228, Oficyna Wydawnicza Politechniki Wrocławskiej, 2004 (PDF)
8. Adam Czajka, Andrzej Pacut, ''Biometria podpisu odręcznego'', w: Paweł Zając, Stanisław Kwaśniowski (Red.) Automatyczna identyfikacja w systemach logistycznych, Roz. 7.7, str. 244-260, Oficyna Wydawnicza Politechniki Wrocławskiej, 2004 (PDF)

Journal papers

1. Ewelina Bartuzi, Mateusz Trokielewicz "Multispectral hand features for secure biometric authentication systems", Concurrency Computat Pract Exper. 2021, DOI: 10.1002/cpe.6471 (Wiley Online Library)
2. Mateusz Trokielewicz, Adam Czajka, Piotr Maciejewicz "Post‐mortem Iris Decomposition and its Dynamics in Morgue Conditions", Journal of Forensic Sciences (Volume 65: 1530-1538, Issue 5, September 2020), DOI: 10.1111/1556-4029.14488 (Wiley Online Library)
3. Mateusz Trokielewicz, Adam Czajka, Piotr Maciejewicz "Post-mortem iris recognition with deep-learning-based image segmentation", Image and Vision Computing (Volume 94, February 2020), DOI: 110.1016/J.IMAVIS.2019.103866 (ScienceDirect)
4. Aidan Boyd, Shivangi Yadav, Thomas Swearingen, Andrey Kuehlkamp, Mateusz Trokielewicz, Eric Benjamin, Piotr Maciejewicz, Dennis Chute, Arun Ross, Patrick Flynn, Kevin Bowyer, Adam Czajka "Post-Mortem Iris Recognition—A Survey and Assessment of the State of the Art", IEEE Access (Volume: 8), DOI: 10.1109/ACCESS.2020.3011364 (IEEEXplore)
5. Mateusz Trokielewicz, Adam Czajka, Piotr Maciejewicz "The Eyes have it: New iris-recognition techniques can tell whether an Eye is healthy, diseased—or dead", IEEE Spectrum (Volume: 56 , Issue: 09 , Sept. 2019), DOI: 10.1109/MSPEC.2019.8818591 (PDF)
6. Mateusz Trokielewicz, Adam Czajka, Piotr Maciejewicz "Iris Recognition after Death," IEEE Transactions on Information Forensics and Security, 2018, doi:10.1109/TIFS.2018.2881671 (ArXiv pre-print)
7. Adam Czajka, Kevin Bowyer, "Presentation Attack Detection for Iris Recognition: An Assessment of the State of the Art," ACM Computer Surveys, in press (ArXiv pre-print)
8. Adam Czajka, Kevin Bowyer, Estefan Ortiz, "Analysis of diurnal changes in pupil dilation and eyelid aperture," IET Biometrics, August 2017, DOI: 10.1049/iet-bmt.2016.0191(library.theiet.org)
9. Adam Czajka, Kevin Bowyer, Michael Krumdick, Rosaura Vidal Mata, "Recognition of image-orientation-based iris spoofing," IEEE Transactions on Information Forensics and Security, Vol. 12, No. 9, pp. 2184-2196, Sept. 2017, DOI: 10.1109/TIFS.2017.2701332 (IEEEXplore)
10. Adam Czajka, Włodzimierz Kasprzak, Artur Wilkowski, "Verification of iris image authenticity using fragile watermarking", Bulletin of the Polish Academy of Sciences. Technical Sciences, Vol. 64, No. 4, pp. 807-819, 2016 (PDF - Open Access)
11. Mateusz Trokielewicz, Adam Czajka, Piotr Maciejewicz "Implications of Ocular Pathologies for Iris Recognition Reliability",Image and Vision Computing, Elsevier, 2016,
    DOI: 10.1016/j.imavis.2016.08.001 (PDF)
12. Mateusz Trokielewicz, Ewelina Bartuzi, "Cross-spectral Iris Recognition for Mobile Applications using High-quality Color Images", Journal of Telecommunications and Information Technology, no. 3/2016, pp. 91-97 (PDF)
13. Adam Czajka, "Pupil Dynamics for Iris Liveness Detection", IEEE Transactions on Information Forensics and Security, Vol. 10(4), pp. 726-735, April 2015; print ISSN: 1556-6013; online ISSN: 1556-6021; DOI: 10.1109/TIFS.2015.2398815 (PDF)
14. Adam Czajka, Krzysztof Piech, "Secure Biometric Verification Station Based on Iris Recognition", Journal of Telecommunications and Information Technology (JTIT), Vol. 3, str. 40-49, 2012 (PDF)
15. J. Putz-Leszczyńska i A. Pacut,"Model approach to DTW signature verification using error signals", Journal of Forensic Document Examination (JFDE) , vol.20, 2011 (accepted to print)
16. Adam Czajka, Andrzej Pacut, "Iris Recognition System Based on Zak-Gabor Wavelet Packets", Journal of Telecommunications and Information Technology (JTIT), Vol. 4, str. 10-18, 2010 (PDF)
17. Przemysław Strzelczyk, "Iris image processing for user authentication", Journal of Telecommunications and Information Technology (JTIT), Vol. 4, 2010
18. Marcin Chochowski, "The template selection in biometric systems based on binary iris codes", Journal of Telecommunications and Information Technology (JTIT), Vol. 4, 2010
19. Joanna Putz-Leszczyńska and Michał Kudelski, "Hidden Signature for DTW Signature Verification in Authorizing Payment Transactions", Journal of Telecommunications and Information Technology (JTIT), Vol. 4, 2010
20. Adam Czajka, Przemek Strzelczyk, and Andrzej Pacut, ''Making iris recognition more reliable and spoof resistant'', SPIE Newsroom, 2007, (doi: 10.1117/2.1200706.0614)
21. Adam Czajka, Andrzej Pacut, ''Biometria tęczówki oka'', Techniki Komputerowe, Biuletyn Informacyjny, nr 1/2002, str. 5-18, Instytut Maszyn Matematycznych, Warszawa, 2002 (PDF)
22. Adam Czajka, Andrzej Pacut, ''Rozpoznawanie podpisów odręcznych jako przykład systemu weryfikacji tożsamości'', Techniki Komputerowe, Biuletyn Informacyjny, nr 1/2001, str. 7-24, Instytut Maszyn Matematycznych, Warszawa, 2001 (PDF)

Conference proceedings

1. M. Trokielewicz, A. Czajka, P. Maciejewicz ''Post-Mortem Iris Recognition Resistant to Biological Eye Decay Processes'', 2020 IEEE Winter Conference on Applications of Computer Vision (WACV), March 1-5, 2020, Snowmass Village, CO, USA (IEEEXplore)
2. Mateusz M. Trokielewicz, Adam Czajka, Piotr Maciejewicz, ''Perception of Image Features in Post-Mortem Iris Recognition:Humans vs Machines'', 10th IEEE International Conference on Biometrics: Theory, Applications and Systems (BTAS 2019), Tampa, USA, September 23-26, 2019 (PDF)
3. Ewelina Bartuzi, Mateusz M. Trokielewicz, ''Unconstrained Thermal Hand Segmentation'', 10th IEEE International Conference on Biometrics: Theory, Applications and Systems (BTAS 2019), Tampa, USA, September 23-26, 2019 (PDF)
4. Ewelina Bartuzi, Mateusz M. Trokielewicz, ''Presentation Attack Detection for Mobile Device-Based Iris Recognition'', International Conference on Image Processing and Communications (IP&C 2019), part of the Advances in Intelligent Systems and Computing book series (AISC, volume 1062, pp 30-40), Sep 2019 (PDF)
5. Daniel Kerrigan, Mateusz M. Trokielewicz, Adam Czajka, Kevin Bowyer, ''Iris Recognition with Image Segmentation Employing Retrained Offthe-Shelf Deep Neural Networks'', 12th IAPR International Conference On Biometrics (ICB2019), June 4-7, 2019, Crete, Greece (PDF)
6. Jeffery D. Kinnison, Mateusz M. Trokielewicz, Camila Carballo, Adam Czajka, Walter Scheirer, ''Learning-Free Iris Segmentation Revisited: A First Step Toward Fast Volumetric Operation Over Video Samples'', 12th IAPR International Conference On Biometrics (ICB2019), June 4-7, 2019, Crete, Greece (PDF)
7. Ewelina Bartuzi, Naser Damer, 'Thermal and Cross-spectra Palm Image Matching in the Visual Domain by Robust Image Transformatio'', 12th IAPR International Conference On Biometrics (ICB2019), June 4-7, 2019, Crete, Greece (PDF)
8. Daniel Moreira, Mateusz Trokielewicz, Adam Czajka, Kevin Bowyer, Patrick Flynn ''Performance of Humans in Iris Recognition: The Impact of Iris Condition and Annotation-driven Verification'', IEEE Winter Conference on Applications of Computer Vision (WACV 2019), January 7-11, 2019, Waikoloa Village, Hawaii, USA (PDF)
9. Mateusz Trokielewicz, Adam Czajka, Piotr Maciejewicz, ''Presentation Attack Detection for Cadaver Iris", 9th IEEE International Conference on Biometrics: Theory, Applications and Systems (BTAS 2018), Los Angeles, California, October 22-25, 2018 (PDF)
10. Mateusz Trokielewicz, Adam Czajka, ''Data-Driven Segmentation of Post-mortem Iris Images'', 6th IAPR/IEEE International Workshop on Biometrics and Forensics (IWBF 2018), June 7 - 8, 2018, Sassari, Italy (PDF)
11. Ewelina Bartuzi, Mateusz Trokielewicz, ''Thermal Features for Presentation Attack Detection on Hand Biometrics", 9th IEEE International Conference on Biometrics: Theory, Applications and Systems (BTAS 2018), Los Angeles, California, October 22-25, 2018 (PDF)
12. Ewelina Bartuzi, Katarzyna Roszczewska, Mateusz Trokielewicz, Radosław Białobrzeski, ''MobiBits: Multimodal Mobile Biometric Database'', BIOSIG 2018: 17th International Conference of the Biometrics Special Interest Group, Sep. 26 - 29, 2018, Darmstadt, Germany (PDF)
13. Mateusz Trokielewicz, Adam Czajka, ''Data-Driven Segmentation of Post-mortem Iris Images'', 6th IAPR/IEEE International Workshop on Biometrics and Forensics (IWBF 2018), June 7 - 8, 2018, Sassari, Italy (PDF)
14. Ewelina Bartuzi, Katarzyna Roszczewska, Adam Czajka, ''Unconstrained Biometric Recognition based on Thermal Hand Images'', 6th IAPR/IEEE International Workshop on Biometrics and Forensics (IWBF 2018), June 7 - 8, 2018, Sassari, Italy (PDF, presentation: PDF)
15. David Yambay, Benedict Becker, Naman Kohli, Daksha Yadav, Adam Czajka, Kevin W. Bowyer, Stephanie Schuckers, Richa Singh, Mayank Vatsa, Afzel Noore, Diego Gragnaniello, Carlo Sansone, Luisa Verdoliva, Lingxiao He, Yiwei Ru, Haiqing Li, Nianfeng Liu, Zhenan Sun, Tieniu Tan, “LivDet Iris 2017 - Iris Liveness Detection Competition 2017,” International Joint Conference on Biometrics - IJCB 2017, October 1-4, 2017, Denver, Colorado, USA (PDF)
16. Mateusz Trokielewicz, Mateusz Szadkowski, ''Iris and Periocular Recognition in Arabian Race Horses Using Deep Convolutional Neural Networks'', International Joint Conference on Biometrics (IJCB 2017), October 1 - 4, 2017, Denver, USA (PDF)
17. Mateusz Trokielewicz, Mateusz Szadkowski, ''Can we recognize horses by their ocular biometric traits using deep convolutional neural networks?'', Proceedings Volume 10445, Photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments 2017; 104453U (2017) doi: 10.1117/12.2281011 (PDF)
18. Mateusz Trokielewicz, Adam Czajka, Piotr Maciejewicz, ''Iris Recognition Under Biologically Troublesome Conditions - Effects of Aging, Diseases and Post-mortem Changes'', 10th International Conference on Bio-Inspired Systems and Signal Processing (BIOSIGNALS 2017), February 21 - 23, 2017, Porto, Portugal, doi: 10.5220/0006251702530258 (PDF)
19. Mateusz Trokielewicz, Adam Czajka, Piotr Maciejewicz, ''Human Iris Recognition in Post-mortem Subjects: Study and Database'', 8th IEEE International Conference on Biometrics: Theory, Applications and Systems (BTAS 2016), September 6 - 9, 2016, Buffalo, NY, USA (PDF)
20. Mateusz Trokielewicz, Adam Czajka, Piotr Maciejewicz, ''Post-mortem Human Iris Recognition'', 9th IAPR International Conference on Biometrics (ICB 2016), June 13 - 16, 2016, Halmstad, Sweden (PDF)
21. Mateusz Trokielewicz, "Iris Recognition with a Database of Iris Images Obtained in
    Visible Light Using Smartphone Camera'', IEEE International Conference on Identity, Security and Behavior Analysis (ISBA 2016), February 29 - March 2, 2016, Sendai, Japan, DOI: 10.1109/ISBA.2016.7477233 (PDF)
22. Mateusz Trokielewicz, Adam Czajka, Piotr Maciejewicz, ''Assessment of iris recognition reliability for eyes affected by ocular pathologies'', IEEE Seventh International Conference on Biometrics: Theory, Applications and Systems (BTAS 2015), September 8-11, 2015, Arlington, USA, DOI: 10.1109/BTAS.2015.7358747 (PDF)
23. Adam Czajka, Kevin W. Bowyer, ''Statistical evaluation of up-to-three-attempt iris recognition'', accepted for presentation at the IEEE Seventh International Conference on Biometrics: Theory, Applications and Systems (BTAS 2015), September 8-11, 2015, Arlington, USA (PDF)
24. Mateusz Trokielewicz, Adam Czajka, Piotr Maciejewicz, "Database of iris images acquired in the presence of ocular pathologies and assessment of iris recognition reliability for disease-affected eyes", The 2nd IEEE International Conference on Cybernetics CYBCONF 2015, Special Session on Reliable Biometrics BIORELIABILITY 2015, Gdynia, June 24 - 26, Gdynia, Poland DOI: 10.1109/CYBConf.2015.7175984 (PDF)
25. Weronika Gutfeter, Andrzej Pacut, "Face 3D Biometrics Goes Mobile: Searching for Applications of a Portable Depth Sensor in Face Recognition", The 2nd IEEE International Conference on Cybernetics CYBCONF 2015, Special Session on Reliable Biometrics BIORELIABILITY 2015, Gdynia, Poland, June 24-26, 2015
26. Adam Czajka, Kevin W. Bowyer, "Statistical analysis of multiple presentation attempts in iris recognition", The 2nd IEEE International Conference on Cybernetics CYBCONF 2015, Special Session on Reliable Biometrics BIORELIABILITY 2015, Gdynia, Poland, June 24-26, 2015 (PDF)
27. Mateusz Trokielewicz, Ewelina Bartuzi, Katarzyna Michowska, Antonina Andrzejewska, Monika Selegrat, "Exploring the feasibility of iris recognition for visible spectrum iris images obtained using smartphone camera", XXXVI-th IEEE-SPIE Joint Symposium Wilga 2015: Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments, May 2015, Wilga, Poland, DOI: 10.1117/12.2205913 (PDF)
28. Mateusz Trokielewicz, "Linear regression analysis of template aging in iris recognition", IEEE 3rd International Workshop On Biometrics and Forensics, 3-4 March 2015, Gjovik, Norway, DOI: 10.1109/IWBF.2015.7110233 (PDF)
29. David Yambay, James Doyle, Kevin Bowyer, Adam Czajka, Stephanie Schuckers, "LivDet-Iris 2013 - Iris Liveness Detection Competition 2013", International Joint Conference on Biometrics - IJCB 2014, 29 September - 2 October 2014, Clearwater, Florida, USA (PDF)
30. Mateusz Trokielewicz, Adam Czajka, Piotr Maciejewicz, "Cataract influence on iris recognition performance", Proc. SPIE 9290, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2014, Vol. 9290, November 25, 2014, DOI: 10.1117/12.2076040 (PDF)
31. Adam Czajka, ''Database of Iris Printouts and its Application: Development of Liveness Detection Method for Iris Recognition'', The 18th International Conference on Methods and Models in Automation and Control (MMAR2013), Miedzyzdroje, Poland, August 26-29, 2013 (PDF)
32. Adam Czajka, Paweł Bulwan, ''Biometric verification based on hand thermal images'', The 6th IAPR International Conference on Biometrics ICB-2013, Madryt, 4-7 czerwca, 2013 (PDF)
33. Adam Czajka, ''Template Ageing in Iris Recognition'', 6th International Conference on Bio-Inspired Systems and Signal Processing, Barcelona, February 11-14, 2013 (PDF)
34. Łukasz Stasiak, Andrzej Pacut, ''Particle filtering in multilevel color context for face detection and tracking in real-time video sequences'', 42nd Annual 2008 IEEE International Carnahan Conference on Security Technology, Praga, Czechy, 13-16 października 2008
35. Adam Czajka, Andrzej Pacut, ''Replay attack prevention for iris biometrics'', 42nd Annual 2008 IEEE International Carnahan Conference on Security Technology, Praga, Czechy, 13-16 października 2008 (PDF)
36. Raul Sanchez-Reillo, Raul Alonso-Moreno, Adam Czajka, Young-Bin Kwon, ''Automatic Remote Evaluation System for Biometric Testing'', 10th International Conference on Control, Automation, Robotics and Vision, ICARCV 2008, Hanoi, 17 - 20 December 2008 (PDF)
37. Przemek Strzelczyk, Adam Czajka, Andrzej Pacut, ''Iris recognition with match-on-card'', 15-th European Signal Processing Conference EUSIPCO 2007, Poznan, Poland, September 3-7, 2007 (PDF)
38. Łukasz Stasiak, Andrzej Pacut, ''Particle filters for multi-face detection and tracking with automatic clustering'', IEEE International Workshop on Imaging Systems and Techniques, Kraków, Polska, 5 maja 2007
39. Marcin Chochowski, Andrzej Pacut, ''Information hiding within iris template'', Net-ID, Identity, Trust, Privacy and Security in Europe, conference documentation, Berlin, Germany, February 26-27, 2007
40. Andrzej Pacut, Adam Czajka, ''Aliveness detection for iris biometrics'', 2006 IEEE International Carnahan Conference on Security Technology, 40th Annual Conference, October 17-19, Lexington, Kentucky, IEEE 2006 (PDF)
41. Łukasz Stasiak, Adam Czajka, Przemysław Strzelczyk, Marcin Chochowski, Andrzej Pacut, ''Od biometrii do bezpiecznej biometrii'', SECURE 2006 Bezpieczeństwo - czas na przełom, Warszawa, 17-18 października 2006 (PDF)
42. Przemek Strzelczyk, ''Protokół BEAP'', XXII Krajowe Sympozjum Telekomunikacji i Teleinformatyki 2006, Bydgoszcz, 13-15 września 2006
43. Adam Czajka, Przemek Strzelczyk, ''Iris recognition with compact zero-crossing-based coding'', in: Ryszard S. Romaniuk (Ed.), Proceedings of SPIE - Volume 6347, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2006, 634723, Oct. 12, 2006 (doi: 10.1117/12.714578) (PDF)
44. Łukasz Stasiak, ''Support vector machine for hand geometry-based identity verification system'', in: Ryszard S. Romaniuk (Ed.), Proceedings of SPIE - Volume 6347, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2006, 634725, Oct. 12, 2006 (doi: 10.1117/12.714578)
45. Rafał Wardziński, ''Emerging biometrics: EEG-based identity verification'', in: Ryszard S. Romaniuk (Ed.), Proceedings of SPIE - Volume 6347, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2006, 634722, Oct. 12, 2006 (doi: 10.1117/12.714578)
46. Joanna Putz-Leszczyńska, "On-line signature verification using dynamic time warping with positional coordinates", in: Ryszard S. Romaniuk (Ed.), Proceedings of SPIE - Volume 6347, Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2006, 634724, Oct. 12, 2006 (doi: 10.1117/12.714578)
47. Andrzej Pacut, Adam Czajka, Przemek Strzelczyk, ''Biometrics for Secure Remote Access'', Net-ID 2006 - Identity, Trust, Privacy and Security, January 30-31, 2006, pp. 1-4, Berlin, 2006 (PDF)
48. Andrzej Pacut, Joanna Putz-Leszczyńska, ''Dynamic Time Warping in Subspaces for On-Line Signature Verification'', 12th Biennial Conference of the International Graphonomics Society , 26-29 June 2005, University of Salerno, Italy
49. Marcin Chochowski, Adam Czajka, Andrzej Pacut, Przemek Strzelczyk, ''Biometryczne karty inteligentne'', SECURE 2005, Bezpieczeństwo - kto ponosi odpowiedzialność, 25-26 października 2005, Warszawa, Tom 2, str. 134-143, 2005
50. Andrzej Pacut, Adam Czajka,''Biometria w Europie - Projekt BioSec'', SECURE 2004, 20-21 października 2004, Warszawa
51. Adam Czajka, Andrzej Pacut, ''Biometryczna weryfikacja tożsamości - systemy komercyjne i prototypy'', SECURE 2003, 5-6 listopada 2003, Warszawa Tom 2, str. 121-131, 2003
52. Adam Czajka, Andrzej Pacut, ''Zak's transform for automatic identity verification'', 4th International Conference on Recent Advances in Soft Computing RASC2002, 12-13 December 2002, Nottingham, United Kingdom, pp. 374-379, 2002
53. Adam Czajka, Andrzej Pacut, ''Neural networks for signature classification and identity verification'', SECURE 2002, 6-7 listopada 2002, Warszawa, Tom. 1, str. 1-7, 2002
54. Andrzej Pacut, Adam Czajka, ''Recognition of Human Signatures'', IEEE-INNS-ENNS International Joint Conference on Neural Networks IJCNN'2001, Washington, D.C., USA, Vol 2, pp. 1560-1564, IEEE, 2001 (PDF

Reports and abstracts

1. Adam Czajka, Andrzej Pacut, ''Frequency Analysis for Iris Authenticity Assessment'', International Biometric Performance Conference, NIST, USA, 5-9 marca 2012
2. Adam Czajka, Andrzej Pacut, ''Influence of Near IR Illumination Wavelength on Iris Recognition Interoperability'', International Biometric Performance Conference, NIST, USA, 5-9 marca 2012
3. Andrzej Pacut, Adam Czajka, Przemysław Strzelczyk, Marcin Chochowski, ''Systemy biometrii'', Biuletyn NASK, nr 1/2007, str. 36-39, 2007
4. Andrzej Pacut, Adam Czajka, Joanna Putz-Leszczyńska, Łukasz Stasiak, Rafał Wardziński, ''Biometric methods'', NASK Review 2006, pp. 31-35, 2006
5. Andrzej Pacut, Adam Czajka, Przemysław Strzelczyk, Marcin Chochowski, ''Biometric systems'', NASK Review 2006, pp. 36-39, 2006
6. Andrzej Pacut, Adam Czajka, Joanna Putz-Leszczyńska, Łukasz Stasiak, Rafał Wardziński, ''Metody biometrii'', Biuletyn NASK, nr 3/2006, ISSN 1509-3603, str. 35-39, 2006
7. Andrzej Pacut, Adam Czajka, Joanna Putz-Leszczyńska, Łukasz Stasiak, Rafał Wardziński, ''Metody biometrii'', Ochrona Mienia i Informacji, nr 6/2006, 2006
8. Przemek Strzelczyk, Marcin Chochowski, ''Inteligentne karty biometryczne'', Biuletyn NASK, nr 3/2005, str. 23-24, October 2005
9. Andrzej Pacut, Adam Czajka, ''Biometria w Europie - Projekt BioSec'', Biuletyn NASK, nr 1/2005, str. 26-30, 2005
10. Andrzej Pacut, Adam Czajka, ''Tęczówka, palec, dłoń ... Biometryczne metody identyfikacji tożsamości'', Biuletyn NASK, wrzesień-październik-listopad 2003, str. 14-16, 2003
11. Andrzej Pacut, Adam Czajka, ''Twój PIN to TY. Metody biometryczne weryfikacji tożsamości, część I'', Biuletyn NASK, styczeń-luty 2003, str. 21-26, 2003
12. Andrzej Pacut, Adam Czajka, ''Twój PIN to TY. Biometryczne metody weryfikacji tożsamości, część II'', Biuletyn NASK, marzec-kwiecień-maj 2003, str. 18-24, 2003
13. Adam Czajka, Andrzej Pacut, ''New iris-based identity verification method'', Biometrics 2003, Exhibition & Conference, 29-31 October 2003, London, UK, Biometrics 2003 Delegate Manual, Abstracts Section, BIO6, 2003
14. Adam Czajka, Andrzej Pacut, Wojtek Kolodziej, ''Identity Verification - From People To Biological Agents'', Biometrics 2002, Conference & Exhibition, 6-8 November 2002, London, UK, Biometrics 2002 Delegate Manual, Abstracts Section, BIO27, 2002