1. Department of Convergence IT Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
2. Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
3. Human-Centered Robotics Research and Development Division, Korea Institute of Robotics and Technology Convergence (KIRO), Pohang, South Korea
4. Division of Advanced Nuclear Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea