1. Institute of AgriFood Research and Technology (IRTA),Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Gardeny (PCiTAL),Lleida,Catalonia,Spain
2. Universitat de Lleida (UdL) – Agrotecnio-CERCA Center,Research Group in AgroICT& Precision Agriculture – GRAP,Department of Agricultural and Forest Sciences and Engineering,Lleida,Catalonia,Spain
3. Computer Vision Center, Campus UAB,Barcelona,Catalonia,Spain
4. Universitat Politècnica de Catalunya,Department of Signal Theory and Communications,Barcelona,Catalonia,Spain