Perceptually and Statistically Decorrelated Features for Image Representation: Application to Transform Coding. - Jesus Malo; Francesc J. Ferri; Rafael Fonolla Navarro; Roberto Valerio (ICPR, 2000)

Nonlinear image representation with statistical independent features: efficient implementation and applications. - Roberto Valerio; Rafael Fonolla Navarro (Human Vision and Electronic Imaging, 2003)

Feature Coding with a Statistically Independent Cortical Representation. - Roberto Valerio; Rafael Fonolla Navarro; Bart M. ter Haar Romeny; Luc Florack (Scale-Space, 2003)

Directly Invertible Nonlinear Divisive Normalization Pyramid for Image Representation. - Roberto Valerio; Eero P. Simoncelli; Rafael Fonolla Navarro (VLBV, 2003)

Nonlinear primary cortical image representation for JPEG 2000 - applying natural image statistics and visual perception to image compression. - Roberto Valerio; Rafael Fonolla Navarro (VISAPP (1), 2006)

A Data Complexity Approach to Kernel Selection for Support Vector Machines. - Roberto Valerio; Ricardo Vilalta (AAAI, 2014)