1. Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, China.
2. Department of Architecture and Civil Engineering, City University of Hong Kong, Hong Kong, China.
3. Department of Computer Science, University of Hong Kong, Hong Kong, China.
4. Department of Computer Science and Engineering, Texas A&M University, College Station, TX 77843, USA.
5. City University of Hong Kong, Shenzhen Research Institute, Shenzhen 518057, China.