1. School of Biomedical Engineering, Sun-Yat Sen University, Shenzhen, China
2. School of Optic-Electric Engineering, Chongqing University, Chongqing, China
3. Laboratory of Image Science and Technology and the Key Laboratory of Computer Network and Information Integration, Ministry of Education, Southeast University, Nanjing, China
4. Henan Key Laboratory of Imaging and Intelligent Processing, PLA Strategic Support Force Information Engineering University, Zhengzhou, China
5. State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou, China