Multimedia and Network Information Systems Proceedings of the 11th International Conference MISSI 2018 - Choroś, Kazimierz; Choroś, Kazimierz; Kopel, Marek; Kopel, Marek; Kukla, Elżbieta; Kukla, Elżbieta; Siemiński, Andrzej; Siemiński, Andrzej (Springer International Publishing : Imprint: Springer, 2019)