1. Department of Land Surveying and Geo-Informatics, and the Research Centre for Artificial Intelligence in Geomatics, JC STEM Laboratory of Earth Observations, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
2. Department of Land Surveying and Geo-Informatics, and the Research Centre for Artificial Intelligence in Geomatics, JC STEM Laboratory of Earth Observations, Research Institute of Land and Space, The Hong Kong Polytechnic University, Hung Hom, Hong Kong