Efficient Global Navigational Planning in 3D Structures based on Point Cloud Tomography Accepted by IEEE/ASME Transactions on Mechatronics Real-time Neural Dense Elevation Mapping for Urban Terrain with Uncertainty Estimations Accepted by IEEE Robotics and Automation Letters An Online Interactive Approach for Crowd Navigation of Quadrupedal Robots Accepted by IROS2022 Real-time Optimal Navigation Planning Using Learned Motion Costs Accepted by ICRA2021 Robocon Hong Kong Contest 2019 3rd runner up, Best Engineering Award