1. Department of Engineering Science, University of Oxford, Oxford, U.K.
2. Computer Graphics and Immersive Technologies (CGIT) Laboratory, University of Southern California, Los Angeles, CA, USA
3. Cooperative Medianet Innovation Center, Shanghai Jiao Tong University, Shanghai, China
4. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, China
5. Shanghai Jiao Tong University and Shanghai AI Laboratory, Shanghai, China