Profil działalności naukowej

Research profile


The research activity of the department is focused on the four main areas:

  • QoS/QoE aspects in telecommunication networks (both mobile and fixed),
  • cyber security,
  • mobile computing,
  • distance learning,
  • image and signal processing,

QoS and routing aspects in the Internet and telecommunication networks

Most of the topics covered by this research area are strongly related to IP QoS assurances, routing protocols and router performance with emphasis on: traffic and congestion control on IP networks (QoS mechanisms and architectures), QoS in IPv6, inter-domain QoS, BGP, routing strategies for IP networks, router architectures, router performance evaluation and performance modeling (Cisco, Linux, BSD), multicast over IPv4/v6 – transition mechanisms, quality of service management.

Major recent results and projects:

Major recent results comprise: – development of router performance measurement methodology, – STSM (Short Term Scientific Mission) COST 263, Technical University of Catalunya (UPC) Barcelona, testing current IPv6 multicast implementations and identifing most suitable transitions mechanisms for provisioning of the multicasting service in a mixed IPv4/IPv6 scenario in modern WAN networks – analysis and development of IPv4/v6 packet processing profiling,

Selected papers:

  • „Comparison of processing of IP 4 and 6 packets for diffserv related queuing” paper prepared for Passive & Active Measurement Workshop 2004 (PAM2004), France ˇ
  • C. Jędrzejek, R. Renk, K. Samp, A. Szwabe – KST’02 conference, „Model świadczenia nowych usług (na podstawie doświadczeń projektu IST CADENUS)”, Bydgoszcz, September 2002, Poland ˇ
  • C. Jedrzejek, R.Renk, K. Samp, A. Szwabe, Networld, „Internet szansą dla wszystkich: zastosowania, infrastruktura techniczna i software’owa. Stan obecny i przyszłość Internetu.” – dodatek specjalny 2001 (translation: Internet for all: applications, hardware and software infrastructure – a paper in the magazine) ˇ
  • Czesław Jędrzejek, Andrzej Adamczyk, Tomasz Ostrowski, Rafał Renk, Krzysztof Samp: „Internet szansą dla wszystkich” – referat wprowadzający, seminarium techniczne „NetWorld – Internet zmienia wszystko”, Warszawa kwiecień 2000 (translation: Internet for all – technical conference) ˇ
  • Czesław Jędrzejek, Rafał Renk, Krzysztof Samp: „Zagrożenia dla ISDN ze strony IP, nowych technologii sieci dostępowych oraz usług sieci inteligentnej”, III ogólnopolska konferencja „Warsztaty ISDN-Wrocław 2000″, kwiecień 2000 (translation: ISDN versus IP, new access networks technology and intelligent network – conference)
  • Witold Hołubowicz, Krzysztof Samp, Adam Flizikowski, KSTiT’06 conference, „NETQOS – Zarzadzanie heterogenicznymi sieciami w oparciu o mechanizm polityk w celu zagwarantowania jakosci uslug”, Bydgoszcz, September 2006, Poland

Image and signal processing

Our major scientific interest is in implementing various image processing techniques in human identification systems. We mainly focus on fingerprint and face recognition methods. Most recent research activities concern novel physiological biometrics methods, which would allow passive identification. Such methods could be used in remote access or surveillance systems.

Major recent results and projects:

  • experiments with novel transforms and image coding for video-telephony
  • computer system analyzing various aspects of human motion
  • development of novel fingerprint identification method based on local features
  • usage of complex transforms to fingerprint identification and object recognition

Selected papers: ˇ

  • Rafal Renk, Czeslaw Jedrzejek, „Compression of 3D models in context of the MPEG-4 standard”, Image Processing & Communications, march 2002 ˇ
  • C. Jędrzejek, A. Łempicki, R. Renk, J. Radziulis, „3-D Modeling and Parametrisation of Pelvis and Hip Joint” – 9th International Conference, CAIP2001 (Computer Analysis of Images and Patterns), Warsaw, Poland, September 2001 ˇ
  • Czesław Jędrzejek, Rafał Renk, rozdział „Zaawansowane metody VRML” w książce Multimedia część II, pod edycją W. Skarbka, wyd. PLJ, Warszawa grudzień 1999 (translation: Advanced VRML – chapter in the book) ˇ
  • Choraś Michał, „Wykorzystanie transformacji MHT i HAARCOS do kodowania obrazów wideotelefonicznych”, KST ’02, tom B, str. 68-74, Bydgoszcz. ˇ
  • Choraś S. Ryszard, Choraś Michał ,”Computer Visual System Analyzing the Influence of Stimulants on Human Motion.”, Springer-Verlag LNCS 2492, Articulated Motion and Deformable Objects ’02, str. 241-250, Palma de Mallorca. ˇ
  • Choraś Michał, „Identyfikacja osób z wykorzystaniem analizy obrazów”, Sztuczna Inteligencja ’02, str. 223-231, Siedlce.
  • Choraś S. Ryszard, Choraś Michał, „Feature Extraction Methods in Fingerprint Recognition”, IEEE Circuits and Systems Chapter, Signal Processing ’02, str. 21-26, Poznań. ˇ
  • Choraś Michał, „Zastosowanie transformacji zespolonych do rozpoznawania odcisków palców.”, Techniki Przetwarzania Obrazów 2002, str. 274-279, Serock. ˇ
  • Choraś S. Ryszard, Choraś Michał, „Automatyczne wykrywanie i lokalizacja twarzy w 2D obrazach.”, Techniki Przetwarzania Obrazów 2002, str. 262-267, Serock. ˇ
  • Choraś Michał, Andrysiak Tomasz, „Hierarchical Object Recognition Using Gabor Wavelets.”, Komputerowe Systemy Rozpoznawania KOSYR’2003, Miłków.

Distance learning

Our main scientific interests in distance learning are: ontologies in distance learning, CAA (Computer Assisted Assessment), cognitive and knowledge-based system (C-KBS), web services in distance learning. The main question on which we try to answer is: how to check students higher order thinking skills using distance learning exams?.
Within C-KBS framework: knowledge acquisition and representation, approximate reasoning and management of uncertainty in C-KBS, fuzzy set approach, neural networks, image processing, classification.

Major recent results:

We have complete LMS (Learning Management System) with many collaboration tools (chat, calendar, news-group etc) and authoring tool. Our students regularly from 2000 take part in learning and exams in our system. In our LMS we implement IMS specifications (CP, QTI, Meta-data etc.). STSM (Short Term Scientific Mission) COST 263, University of Mannheim, Mannheim, Web-services in White board system.

Selected papers:

  • R. Renk, C. Jedrzejek – XIII-th annual seminar for the deans of Electronics, Telecomunication and Information Technology faculties, „Is it possible to assess higher order thinking skills in CAA?”, Zacisze, June 2003, Poland ˇ
  • Czeslaw Jedrzejek, Rafal Renk, Andrzej Adamczyk, Adam Flizikowski, Maciej Seroka, and Lilianna Aniola-Jedrzejek, „XML based Authoring Tool for Assessment” Online Educa Berlin 7th International Conference on Technology Supported Learning, Berlin, 28-30 November 2001 ˇ Lilianna Aniola-Jedrzejek Poznan University of Technology (PUT), Poznan, Poland
  • Czeslaw Jedrzejek, Andrzej Adamczyk Institute of Communication and Information Technologies (ITTI), Poznan Rafal Renk Akademia Techniczno-Rolnicza (ATR), Bydgoszcz, Poland „Database Enhanced Assessment in Distance Learning” Online Educa Berlin 6th International Conference on Technology Supported Learning, Berlin, 29 November – 1 December 2000 ˇ
  • Andrzej Adamczyk, Damian Undziakiewicz, Adam Flizikowski, Institute of Communication and Information Technologies, Poznań, „Database aspects of the nonstationary education systems” (in Polish), VI Konferencja PLOUG, Systemy informatyczne w dobie Internetu, Zakopane Kościelisko, 24-28th October 2000