1. School of Instrument Science and Optoelectronics Engineering, Hefei University of Technology, Hefei, China
2. School of Computer Science and Information Engineering, Hefei University of Technology, Hefei, China
3. Beijing Microelectronics Technology Institute, Beijing, China
4. Department of Biomedical Engineering and Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, Hefei University of Technology, Hefei, China