1. College of Computer Science and Technology, Jilin University, Changchun, China
2. College of Instrumentation and Electrical Engineering, Jilin University, Changchun, China
3. School of Computer Science, Shenyang Aerospace University, Shenyang, China
4. School of Surveying and Geospatial Engineering, College of Engineering, University of Tehran, Tehran, Iran
5. School of Computer Science and Engineering, Tianjin University of Technology, Tianjin, China
6. College of Computer Science and Artificial Intelligence, Wenzhou University, Wenzhou, China