Affiliation: | 1.Department of Information and Communication Engineering, Chosun University, 309Pilmun-Daero, Dong-Gu, Gwanju, 61452, Republic of Korea ;2.Department of Software, Gachon University, 1342 Seongnamdaero, Sujeonggu, Seongnam, Gyeonggido, 13120, Republic of Korea ; |