1. STIIMA-CNR, Institute of Intelligent Industrial Systems and Technologies for Advanced Manufacturing, Consiglio Nazionale delle Ricerche, Via Lembo 38/F, I-70124 Bari, Italy
2. STIIMA-CNR, Institute of Intelligent Industrial Systems and Technologies for Advanced Manufacturing, Consiglio Nazionale delle Ricerche, Via Corti 12, I-20133 Milano, Italy