1. School of Computer and Information engineering, Xiamen University of Technology,Xiamen,China
2. Fuzhou University,Spatial Data Mining and Information sharing of MOE,Fuzhou,China
3. College of Geomatics, Shandong University of Science and Technology,Qingdao,China
4. Surveying and GIS Huadong Engineering (Fujian) Corporation Limited,Fuzhou,China