M-CBIR: A Medical Content-Based Image Retrieval System Using Metric Data-Structures. - Herbert Chuctaya; Christian E. Portugal-Zambrano; César Beltrán Castañón; Juan Gutiérrez; Cristian Jose Lopez Del Alamo; Yván Túpac (SCCC, 2011)

Robust Range Finder Through a Laser Pointer and a Webcam. - Christian E. Portugal-Zambrano; Jesús P. Mena-Chalco (CLEI Selected Papers, 2011)

Automatic classification of agro-industrial products through dynamic membership functions in Fuzzy logic systems: An approach to Scallops. - Roy Perez-Pinto; Christian E. Portugal-Zambrano; Dennis Barrios-Aranibar (CLEI, 2012)

Computer Aided Medical Diagnosis Tool to Detect Normal/Abnormal Studies in Digital MR Brain Images. - Juan C. Gutiérrez-Cáceres; Christian E. Portugal-Zambrano; César Beltrán Castañón (CBMS, 2014)

An approach for improve the recognition of defects in coffee beans using retinex algorithms. - Rel Guzman Apaza; Christian E. Portugal-Zambrano; Juan C. Gutiérrez-Cáceres; César Beltrán Castañón (CLEI, 2014)

Automatic classification of physical defects in green coffee beans using CGLCM and SVM. - Rayner H. Montes Condori; Juan H. Chuctaya Humari; Christian E. Portugal-Zambrano; Juan C. Gutiérrez-Cáceres; César Beltrán Castañón (CLEI, 2014)

A neuroevolutive approach to the normal/abnormal classification in digital MR brain images. - C. Roxana E. Limache; Christian E. Portugal-Zambrano (CLEI, 2016)

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)