1. State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, China
2. Multimedia Laboratory, Nanyang Technological University, Jurong West, Singapore
3. Institute for Anthropomatics and Robotics, Karlsruhe Institute of Technology, Karlsruhe, Germany
4. College of Computer Science and Technology, Zhejiang University, Hangzhou, China
5. Data Intelligence Laboratory, Luokung Technology Corporation, Beijing, China