1. Tencent Robotics X Lab, Tencent Binhai Mansion, Shenzhen, China
2. Chair of Automatic Control Engineering, Technical University of Munich, Munich, Germany
3. School of Automation, Nanjing University of Information Science and Technology, Nanjing, China
4. Chair for Computer Aided Medical Procedures and Augmented Reality, Technical University of Munich, Munich, Germany
5. State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, China