1. Beihang University,School of Automation Science and Electrical Engineering,Beijing,China
2. Nanjing University of Science and Technology,Jiangsu Key Laboratory of Image and Video Understanding for Social Safety,Nanjing,China
3. Beihang University,Institute of Artificial Intelligence,Beijing,China
4. Nanjing Tech University,School of Computer Science and Technology,Nanjing,China
5. Fujian Normal University,School of Mathematics and Computer Science,Fujian,China
6. University of Technology of Troyes,Institute Charles Delaunay-LM2S,Troyes,France