ANALISA KARAKTERISTIK FISIK CHIPS UMBI TALAS (Colocasia esculenta L.) BERBASIS MACHINE VISION (STUDI PENGERINGAN DENGAN TRAY DRYER) (Analisys of The Physical Properties on Taro Chip (Colocasia esculenta L.) Based on Machine Vision Method during Drying) (UPN VETERAN JAWA TIMUR, 2017)