1. School of Electronic Engineering and Computer Science, Queen Mary University of London, London, U.K.
2. Second Affiliated Hospital, Zhejiang University, Hangzhou, China
3. College of Media Engineering, Communication University of Zhejiang, Hangzhou, China
4. School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
5. School of Computer Science and Technology, Hangzhou Dianzi University, Hangzhou, China
6. School of Computing and Mathematic Sciences, University of Leicester, Leicester, U.K.