1. State Key Laboratory of Extreme Photonics and Instrumentation and the National Engineering Research Center of Optical Instrumentation, Zhejiang University, Hangzhou, China
2. Institute for Anthropomatics and Robotics, Karlsruhe Institute of Technology, Karlsruhe, Germany
3. School of Robotics and the National Engineering Research Center of Robot Visual Perception and Control Technology, Hunan University, Changsha, China
4. Shanghai SUPREMIND Technology Company Ltd., Shanghai, China