1. College of Optoelectronic Engineering, Chongqing University, Chongqing, China
2. Department of Pathology, Daping Hospital, Army Medical University, Chongqing, China
3. Center of Digital Dentistry, Faculty of Prosthodontics, Peking University School and Hospital of Stomatology, National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, Beijing, China
4. College of Science, Chongqing University of Technology, Chongqing, China