Authors
Jan Purczyński
West Pomeranian University of Technology Department of Signal Processing and Multimedia Engineering 26. Kwietnia 10, 71-126, Szczecin, Poland
Kamila Bednarz-Okrzyńska
Ph.D. University of Szczecin Faculty of Management and Economics of Services Department of Quantitative Methods Cukrowa 8, 71-004, Szczecin, Poland