On the Role of Interpolation in the Normalization of Non-ideal Visible Wavelength Iris Images. - Gil Melfe Mateus Santos; Hugo Pedro Martins Carrico Proença (CIS (1), 2009)

Iris Recognition: Preliminary Assessment about the Discriminating Capacity of Visible Wavelength Data. - Gil Melfe Mateus Santos; Marco V. Bernardo; Hugo Pedro Martins Carrico Proença; Paulo Torrão Fiadeiro (ISM, 2010)

A robust eye-corner detection method for real-world data. - Gil Melfe Mateus Santos; Hugo Proença 001 (IJCB, 2011)

Fusing color and shape descriptors in the recognition of degraded iris images acquired at visible wavelengths. - Hugo Proença 001; Gil Melfe Mateus Santos (Comput. Vis. Image Underst., 2012)

Facial expressions: Discriminability of facial regions and relationship to biometrics recognition. - Elisa Barroso; Gil Melfe Mateus Santos; Hugo Proença 001 (CIBIM, 2013)

Periocular biometrics: An emerging technology for unconstrained scenarios. - Gil Melfe Mateus Santos; Hugo Proença 001 (CIBIM, 2013)

Segmenting the periocular region using a hierarchical graphical model fed by texture / shape information and geometrical constraints. - Hugo Proença 001; João C. Neves 001; Gil Melfe Mateus Santos (IJCB, 2014)

Quis-Campi: Extending in the Wild Biometric Recognition to Surveillance Environments. - João C. Neves 001; Gil Melfe Mateus Santos; Sílvio Filipe; Emanuel Grancho; Silvio Barra; Fabio Narducci; Hugo Proença 001 (ICIAP Workshops, 2015)

A Comparative Analysis of Two Approaches to Periocular Recognition in Mobile Scenarios. - João C. Monteiro; Rui Esteves; Gil Melfe Mateus Santos; Paulo Torrão Fiadeiro; Joana Lobo; Jaime S. Cardoso 001 (ISVC (2), 2015)

BioHDD: a dataset for studying biometric identification on heavily degraded data. - Gil Melfe Mateus Santos; Paulo Torrão Fiadeiro; Hugo Proença 001 (IET Biom., 2015)

Fusing iris and periocular information for cross-sensor recognition. - Gil Melfe Mateus Santos; Emanuel Grancho; Marco V. Bernardo; Paulo Torrão Fiadeiro (Pattern Recognit. Lett., 2015)

Periocular recognition: how much facial expressions affect performance? - Elisa Barroso; Gil Melfe Mateus Santos; Luis Cardoso; Chandrashekhar Padole; Hugo Proença 001 (Pattern Anal. Appl., 2016)

Robust Periocular Recognition by Fusing Sparse Representations of Color and Geometry Information. - Juan Carlos Moreno; V. B. Surya Prasath; Gil Melfe Mateus Santos; Hugo Proença 001 (J. Signal Process. Syst., 2016)