Mauricio Villegas Santamaría

Personal Website - Research

I am a researcher at the Universidad Politécnica de Valencia, member of the PRHLT research group and I work in the Instituto Tecnológico de Informática. Currently I am working on Image Retrieval and Relevance Feedback, under the MIPRCV project.

Research Interests

Image Retrieval, Relevance Feedback
Statistical Pattern Recognition, Dimensionality Reduction
Large-scale Pattern Recognition
Computer Vision, Image Recognition in Portable Devices
Biometrics, Face Recognition, Multimodal Fusion

Selected Links

Publications and Talks

Year 2013

M. Villegas, L. A. Leiva, and R. Paredes. Interactive image retrieval based on relevance feedback. In Multimodal Interaction in Image and Video Applications, volume 48 of Intelligent Systems Reference Library, pages 83--109. Springer Berlin Heidelberg, 2013. Available: bibtex , DOI .
M. Villegas and R. Paredes. On improving robustness of LDA and SRDA by using tangent vectors. Pattern Recognit. Lett., 34(9):1094--1100, 2013. Available: bibtex , DOI .

Year 2012

M. Villegas and R. Paredes. A k-NN Approach for Scalable Image Annotation Using General Web Data. In Big Data Meets Computer Vision: First International Workshop on Large Scale Visual Recognition and Retrieval, held in conjunction with NIPS 2012, pages 1--5, South Lake Tahoe, CA, USA, Dec. 2012. Available: bibtex , paper , poster .
M. Villegas and R. Paredes. Image-Text Dataset Generation for Image Annotation and Retrieval. In R. Berlanga and P. Rosso, editors, II Congreso Español de Recuperación de Información, CERI 2012, pages 115--120, Universidad Politécnica de Valencia, Valencia, Spain, June 18-19 2012. Available: bibtex , paper , poster .
M. Villegas and R. Paredes. Overview of the ImageCLEF 2012 Scalable Web Image Annotation Task. In P. Forner, J. Karlgren, and C. Womser-Hacker, editors, CLEF 2012 Evaluation Labs and Workshop, Online Working Notes, Rome, Italy, September 17-20 2012. Available: bibtex , paper , presentation .

Year 2011

L. A. Leiva, M. Villegas, and R. Paredes. Query Refinement Suggestion in Multimodal Image Retrieval with Relevance Feedback. In Proceedings of the 13th International Conference on Multimodal Interaction, ICMI '11, pages 311--314, New York, NY, USA, 2011. ACM. Available: bibtex , paper , DOI .
M. Villegas. Contributions to High-Dimensional Pattern Recognition. PhD thesis, Universidad Politécnica de Valencia, Valencia, Spain, May 2011. Available: bibtex , thesis , presentation .
M. Villegas and R. Paredes. Dimensionality reduction by minimizing nearest-neighbor classification error. Pattern Recognit. Lett., 32(4):633--639, 2011. Available: bibtex , paper , DOI .

Year 2010

S. Marcel, C. McCool, P. Matějka, T. Ahonen, J. Černocký, S. Chakraborty, V. Balasubramanian, S. Panchanathan, C. H. Chan, J. Kittler, N. Poh, B. Fauve, O. Glembek, O. Plchot, Z. Jančík, A. Larcher, C. Lévy, D. Matrouf, J.-F. Bonastre, P.-H. Lee, J.-Y. Hung, S.-W. Wu, Y.-P. Hung, L. Machlica, J. Mason, S. Mau, C. Sanderson, D. Monzo, A. Albiol, A. Albiol, H. Nguyen, B. Li, Y. Wang, M. Niskanen, M. Turtinen, J. A. Nolazco-Flores, L. P. Garcia-Perera, R. Aceves-Lopez, M. Villegas, and R. Paredes. On the Results of the First Mobile Biometry (MOBIO) Face and Speaker Verification Evaluation. In Recognizing Patterns in Signals, Speech, Images, and Videos. ICPR 2010 Contents, volume 6388 of LNCS, pages 210--225. Springer Berlin / Heidelberg, Istanbul, (Turkey), Dec. 2010. Available: bibtex , DOI .
N. Poh, C. H. Chan, J. Kittler, S. Marcel, C. McCool, E. A. Rúa, J. L. A. Castro, M. Villegas, R. Paredes, V. Štruc, N. Pavešić, A. A. Salah, H. Fang, and N. Costen. An Evaluation of Video-to-Video Face Verification. Information Forensics and Security, IEEE Transactions on, 5(4):781--801, Dec. 2010. Available: bibtex , DOI .
M. Villegas. Dimensionality Reduction by Minimising Nearest-Neighbour Classification Error, Feb. 2010. Centre for Vision, Speech and Signal Processing (CVSSP) Seminar. Available: bibtex , presentation .
M. Villegas and R. Paredes. Fusion of Qualities for Frame Selection in Video Face Verification. In Pattern Recognition, 2010. ICPR 2010. 20th International Conference on, pages 1302--1305, Aug. 2010. Available: bibtex , paper , poster , DOI .
M. Villegas and R. Paredes. On Optimizing Local Feature Face Recognition for Mobile Devices. In A. M. Alfonso Ortega and E. Lleida, editors, V Jornadas de Reconocimiento Biométrico de Personas, pages 177--186, Parque Tecnológico WALQA, Huesca, Spain, September 2-3 2010. Available: bibtex , paper , presentation .

Year 2009

N. Poh, C. H. Chan, J. Kittler, S. Marcel, C. McCool, E. A. Rúa, J. L. A. Castro, M. Villegas, R. Paredes, V. Štruc, N. Pavešić, A. A. Salah, H. Fang, and N. Costen. Face Video Competition. In 3rd International Conference on Biometrics (ICB), volume 5558 of LNCS, pages 715--724. Springer, Alghero, (Italy), June 2009. Available: bibtex , DOI , supplementary .
M. Villegas and R. Paredes. Score Fusion by Maximizing the Area Under the ROC Curve. In 4th Iberian Conference on Pattern Recognition and Image Analysis, volume 5524 of LNCS, pages 473--480. Springer, Póvoa de Varzim, (Portugal), June 2009. Available: bibtex , paper , poster , DOI .

Year 2008

M. Villegas. Face Analysis and Recognition in Mobile Devices. Master's thesis, Universidad Politécnica de Valencia, Valencia, Spain, Nov. 2008. Available: bibtex , thesis , presentation , facedet-midlet , faceverif-midlet , gender-midlet .
M. Villegas and R. Paredes. Simultaneous Learning of a Discriminative Projection and Prototypes for Nearest-Neighbor Classification. Computer Vision and Pattern Recognition, 2008. CVPR '08. IEEE Computer Society Conference on, pages 1--8, 2008. Available: bibtex , paper , poster , presentation , gender-dataset , implementation , DOI .
M. Villegas, R. Paredes, A. Juan, and E. Vidal. Face Verification on Color Images Using Local Features. In Computer Vision and Pattern Recognition Workshops, 2008. CVPRW '08. IEEE Computer Society Conference on, pages 1--6, Anchorage, AK, USA, June 2008. IEEE Computer Society. Available: bibtex , paper , presentation , DOI .

Year 2007

M. Villegas. On Integer-Based Face Recognition Algorithms, Nov. 2007. Instituto Tecnológico de Informática, PRHLT Seminar. Available: bibtex , presentation .
M. Villegas and R. Paredes. Face Recognition in Color Using Complex and Hypercomplex Representations. In 3rd Iberian Conference on Pattern Recognition and Image Analysis, volume 4477 of LNCS, pages 217--224. Springer, Girona (Spain), June 2007. Available: bibtex , paper , poster , DOI .
M. Villegas and R. Paredes. Illumination Invariance for Local Feature Face Recognition. In 1st Spanish Workshop on Biometrics, pages 1--8, Girona (Spain), June 2007. -. Available: bibtex , paper , presentation .

Year 2006

J. Arlandis, J. Cano, J. García-Hernández, R. Llobet, G. Mainar, R. Paredes, A. Pérez, J. C. Pérez-Cortés, I. Salvador, A. H. Toselli, and M. Villegas. ITI Image Recognition and Artificial Vision Group Activities. In F. Plá, P. Radeva, and J. Vitrià, editors, Pattern Recognition: Progress, Directions and Applications, pages 95--105. Centre de Visió per Computador, 2006. Available: bibtex , paper .
M. Villegas. El Detector de Caras del Portero Automático, Feb. 2006. Instituto Tecnológico de Informática, PRHLT Seminar. Available: bibtex , presentation .
M. Villegas. The Use of Color in Face Recognition, Nov. 2006. Instituto Tecnológico de Informática, PRHLT Seminar. Available: bibtex , presentation .

Year 2005

J. Arlandis, J. Cano, J. G. Hernández, R. Llobet, G. Mainar, R. Paredes, J. Pla, A. Pérez, J. C. P. Cortés, I. Salvador, A. Toselli, and M. Villegas. Grupo de Reconocimiento de Imágenes y Visión Artificial (in Spanish). In N. P. de la Blanca Capilla y Filiberto Plá Bañón, editor, En Actas del Primer Congreso Español de Informática (CEDI 2005), Simposio de Reconocimiento de Formas y Análisis de Imágenes (AERFAI). ISBN: 84-9732-445-5, pages 153--158, Granada (España), September 12-13 2005. Thomson. Available: bibtex , paper .
M. Villegas and R. Paredes. Comparison of Illumination Normalization Methods for Face Recognition. In M. F. Aladdin Ariyaeeinia and A. Paoloni, editors, Third COST 275 Workshop - Biometrics on the Internet, pages 27--30, University of Hertfordshire, UK, October 27-28 2005. OPOCE. Available: bibtex , paper , presentation .

Year 2004

M. Villegas. Determinación de la posición de objetos en imágenes usando la transformada de fourier-mellin analítica, Oct. 2004. Bachelor's Thesis, Universidad Politécnica de Valencia, Valencia (Spain). Directors: J. R. Torregrosa and J. Riera. Available: bibtex , thesis , presentation .