1. Zhejiang University,State Key Lab of CAD&CG,Hangzhou,China
2. University of Edinburgh,School of Informatics,Edinburgh,United Kingdom
3. The Hong Kong University of Science and Technology,Department of Computer Science and Engineering,Hong Kong,China
4. Zhejiang University,School of Art and Archaeology,Hangzhou,China
5. Northwestern University,Kellogg School of Management,Evanston,United States