Computer vision grading system for physical quality evaluation of green coffee beans. - Christian E. Portugal-Zambrano; Juan C. Gutiérrez-Cáceres; Juan Ramirez-Ticona; César Beltrán Castañón (CLEI, 2016)

Cell-phone based model for the automatic classification of coffee beans defects using white patch. - Juan Ramirez-Ticona; Juan C. Gutiérrez-Cáceres; Christian E. Portugal-Zambrano (CLEI, 2016)