1. Pohang University of Science and Technology, Departments of Electrical Engineering and Creative IT Engineering, 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk 790-784, Republic of Korea
2. Qufu Normal University, School of Information Science and Technology, 80 Yantai Road North, Rizhao 276826, China
3. Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Institute of Biomedical and Health, 1068 Xueyuan Avenue, University Town of Shenzhen, Shenzhen 518055, China