1. School of Engineering and Technology, University of New South Wales, Canberra, ACT, Australia
2. School of Information and Communication Technology, Griffith University, Nathan, QLD, Australia
3. Key Laboratory of Intelligent Perception and Image Understanding of the Ministry of Education of China, International Research Center of Intelligent Perception and Computation, School of Artificial Intelligence, Xidian University, Xi’an, China
4. School of Systems and Computing, University of New South Wales, Canberra, ACT, Australia