1. School of Physics and Electronics, Central South University, Changsha, Hunan, China
2. Physics Department, Capital Normal University, Beijing, China
3. School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin, China
4. Computer Vision and Systems Laboratory (CVSL), Department of Electrical and Computer Engineering, Laval University, Quebec, Canada
5. Centre for Composite Materials and Structures, Harbin Institute of Technology, Harbin, China