1 Centre for Imaging Sciences, The University of Manchester, Oxford Road, M13 9PT, Manchester, United Kingdom.
2 Graduate Institute of Biomedical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan. cweiwang@mail.ntust.edu.tw.
3 NTUST Centre of Computer Vision and Medical Imaging, National Taiwan University of Science and Technology, Taipei, Taiwan. cweiwang@mail.ntust.edu.tw.
4 Graduate Institute of Biomedical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan.
5 NTUST Centre of Computer Vision and Medical Imaging, National Taiwan University of Science and Technology, Taipei, Taiwan.
6 Department of Information Management, Oriental Institute of Technology, Taipei, Taiwan.
7 Orthodontics and Dentofacial Orthopedics Division, Dental Department, Tri-Service General Hospital, Taipei, Taiwan.
8 School of Dentistry & Graduated Institute of Dental Science, National Defense Medical Center, Taipei, Taiwan.