1. School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin 300387, People’s Republic of China
2. Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems, Tianjin 300387, People’s Republic of China
3. Tianjin Chest Hospital, Tianjin 300222, People’s Republic of China
4. School of Electrical Engineering & Automation, Tianjin University, Tianjin 300072, People’s Republic of China