1. Guangxi Key Lab of Multi-source Information Mining & Security, Guangxi Normal University, Guilin, China
2. Department of Computer Science, Guangxi Normal University, Guilin, China
3. Guangxi Collaborative Innovation Center of Multi-source Information Integration and Intelligent Processing, Guangxi Normal University, Guilin, China
4. Shanghai Key Lab of Modern Optical System, Engineering Research Center of Optical Instrument and System, Ministry of Education, University of Shanghai for Science and Technology, Shanghai, China