1. Guangdong Key Laboratory of Urban Informatics, the Shenzhen Key Laboratory of Spatial Smart Sensing and Services, and the MNR Key Laboratory for Geo-Environmental Monitoring of Great Bay Area, School of Architecture and Urban Planning, Shenzhen University, Guangdong, China
2. School of Computer Science, Wuhan University, Wuhan, China
3. Department of Land Surveying and Geo-Informatics and the Smart Cities Research Institute, The Hong Kong Polytechnic University, Hong Kong, SAR, China