1. Institute for Applied Mathematics and Information Technologies “E. Magenes”,National Research Council,Milan,Italy
2. University of Florence,Department of Statistics, Computer Science, Applications “G. Parenti”,Florence,Italy
3. Institute of Sciences and Technologies for Energy and Sustainable Mobility,National Research Council,Naples,Italy
4. Polytechnic of Milan,Department of Electronics Information and Bioengineering,Milan,Italy
5. University of Florence,Department of Information Engineering,Florence,Italy