1. Universitat Autònoma de Barcelona,Computer Vision Center,Barcelona,Spain
2. University of Sfax,Digital Research Center of Sfax MIRACL Laboratory,Sfax,Tunisia
3. Digital Research Center of Sfax,SM@RTS Laboratory,Sfax,Tunisia
4. Universitat Autònoma de Barcelona,Computer Vision Center,Computer Science Dept.,Barcelona,Spain
5. Indian Statistical Institute,CVPR Unit,Kolkata,India