1. Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
2. Graduate Institute of Automation Technology, National Taipei University of Technology, Taipei, Taiwan
3. Department of Computer Science and Information Management, Providence University, Taichung, Taiwan
4. Department of Computer Science and Information Engineering, National Ilan University, Ilan, Taiwan
5. Department of Engineering Science, National Cheng Kung University, Tainan, Taiwan