1. School of Control Science and Engineering, Shandong University, Jinan, China
2. Yuanhua Robotics, Perception and AI Technologies Ltd., Shenzhen, China
3. Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong, SAR, China
4. Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hong Kong, China
5. Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, China