Image texture analysis and colorimetry for the classification of uranium ore concentrate powders Mara Marchetti, Klaus Mayer, Maria Wallenius, Antonio Bulgheroni, Thierry Wiss, Klaus Lützenkirchen and Lorenzo Fongaro EPJ Web Conf., 225 (2020) 07003 Published online: 20 January 2020 DOI: 10.1051/epjconf/202022507003