1. Chungbuk National University, School of Information and Communication Engineering, Cheongju, Chungbuk, Korea
2. Naver Business Platform Corp., Bundang-gu, Seongnam-si, Gyeonggi-do, Korea
3. Agency for Defense Development, Yuseong, Daejeon, Korea
4. Dankook University, Department of Multimedia Engineering, Yongin-si, Gyeonggi-do, Korea