His research interests are motion analysis for surveillance applications and behaviour analysis, semantic transcoding for video transmission, and multimedia architectures. He collaborates to research projects at national, European, and international level. Prati is the author of more than 90 papers in national and international journals and conference proceedings. He has been actively involved in the organization of ACM VSSN '06 and IAPR ICIAP '07 and has been Guest Editor for special issues on IEEE Transactions on Vehicular Technology and on Expert Systems Journal.