1. Aristotle University of Thessaloniki,Singular Logic,R&D Department
2. Singular Logic,R&D Department,Athens,Greece,14564
3. Videomics Group,CYENS Centre of Excellence,Nicosia,Cyprus
4. University of Huddersfield,School of Computing and Engineering,Huddersfield,U.K,HD1 3DH
5. Aristotle University of Thessaloniki,School of Electrical and Computer Eng.,Thessaloniki,Greece,54124