1. Department of Cybernetics and Biomedical Engineering, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
2. Department of Telecommunications, Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic
3. Institute of Computer Science, University of Opole, ul. Oleska 48, 45-052 Opole, Poland
4. School of Computing and Mathematical Sciences, Old Royal Naval College, University of Greenwich, Park Row, London SE10 9LS, UK
5. Faculty of Electrical Engineering, Automatic Control and Informatics, Opole University of Technology, ul. Proszkowska 76, 45-758 Opole, Poland