1. Department of ICT Convergence Rehabilitation Engineering, Soonchunhyang University, Asan, South Korea
2. Department of Computer Science, Soonchunhyang University, Asan, South Korea
3. Department of Medical IT Engineering, Soonchunhyang University, Asan, South Korea
4. School of Architectural Engineering, College of Science and Technology, Hongik University, Sejong, South Korea
5. Department of Electronic Information Engineering, Soonchunhyang University, Asan, South Korea
6. Department of Computer Software Engineering, Soonchunhyang University, Asan, South Korea