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Author |
Francisco Javier Orozco; F.A. Garcia; J.L. Arcos; Jordi Gonzalez |
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Title |
Spatio-Temporal Reasoning for Reliable Facial Expression Interpretation |
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2007 |
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Proceedings of the 5th International Conference on Computer Vision Systems |
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Bielefeld University (Germany) |
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ICVS |
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ISE @ ise @ OGA2007 |
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772 |
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Author |
Francisco Javier Orozco; Jordi Gonzalez; Ignasi Rius; Xavier Roca |
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Title |
Hierarchical Eyelid and Face Tracking |
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2007 |
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3rd Iberian Conference on Pattern Recognition and Image Analysis (IbPRIA 2007), J. Marti et al. (Eds.) LNCS 4477:499–506 |
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Girona (Spain) |
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ISE @ ise @ OGR2007 |
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773 |
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Author |
Francisco Javier Orozco; Xavier Roca; Jordi Gonzalez |
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Title |
Real-Time Gaze Tracking with Appearance-Based Models |
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Journal Article |
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Year |
2008 |
Publication |
Machine Vision Applications |
Abbreviated Journal |
MVAP |
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20 |
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6 |
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353-364 |
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Keywords Eyelid and iris tracking, Appearance models, Blinking, Iris saccade, Real-time gaze tracking |
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Abstract |
Psychological evidence has emphasized the importance of eye gaze analysis in human computer interaction and emotion interpretation. To this end, current image analysis algorithms take into consideration eye-lid and iris motion detection using colour information and edge detectors. However, eye movement is fast and and hence difficult to use to obtain a precise and robust tracking. Instead, our
method proposed to describe eyelid and iris movements as continuous variables using appearance-based tracking. This approach combines the strengths of adaptive appearance models, optimization methods and backtracking techniques.Thus,
in the proposed method textures are learned on-line from near frontal images and illumination changes, occlusions and fast movements are managed. The method achieves real-time performance by combining two appearance-based trackers to a
backtracking algorithm for eyelid estimation and another for iris estimation. These contributions represent a significant advance towards a reliable gaze motion description for HCI and expression analysis, where the strength of complementary
methodologies are combined to avoid using high quality images, colour information, texture training, camera settings and other time-consuming processes. |
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ISE @ ise @ ORG2008 |
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972 |
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Author |
Francisco Javier Orozco; Jordi Gonzalez |
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Title |
Confidence Assessment on Eyelid and Eyebrow Expression Recognition |
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Conference Article |
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2008 |
Publication |
2008 8th IEEE International Conference on Automatic Face and Gesture Recognition (FG 2008) |
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Amsterdam (Holanda) |
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ISE @ ise @ OrG2008 |
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1111 |
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Author |
A. Pujol; Jose Luis Alba; Juan J. Villanueva |
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Title |
Supervised Hausdorff-based measures for face recognition. |
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2001 |
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Proceedings of the IX Spanish Symposium on Pattern Recognition and Image Analysis, 1:255–261. |
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ISE @ ise @ PAV2001 |
Serial |
148 |
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Author |
A. Pujol; Alex Caralps; Juan J. Villanueva |
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Title |
On the suitability of pixel-outlier removal in face recognition. |
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Miscellaneous |
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2001 |
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Proceedings of the IX Spanish Symposium on Pattern Recognition and Image Analysis, 1:241–247 |
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ISE @ ise @ PCV2001 |
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152 |
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Author |
Marco Pedersoli; Jordi Gonzalez; Juan J. Villanueva |
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Title |
High-Speed Human Detection Using a Multiresolution Cascade of Histograms of Oriented Gradients |
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Conference Article |
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2009 |
Publication |
4th Iberian Conference on Pattern Recognition and Image Analysis |
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5524 |
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This paper presents a new method for human detection based on a multiresolution cascade of Histograms of Oriented Gradients (HOG) that can highly reduce the computational cost of the detection search without affecting accuracy. The method consists of a cascade of sliding window detectors. Each detector is a Support Vector Machine (SVM) composed by features at different resolution, from coarse for the first level to fine for the last one.
Considering that the spatial stride of the sliding window search is affected by the HOG features size, unlike previous methods based on Adaboost cascades, we can adopt a spatial stride inversely proportional to the features resolution. This produces that the speed-up of the cascade is not only due to the low number of features that need to be computed in the first levels, but also to the lower number of detection windows that needs to be evaluated.
Experimental results shows that our method permits a detection rate comparable with the state of the art, but at the same time a gain in the speed of the detection search of 10-20 times depending on the cascade configuration. |
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Póvoa de Varzim, Portugal |
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Springer Berlin Heidelberg |
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LNCS |
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0302-9743 |
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978-3-642-02171-8 |
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IbPRIA |
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ISE |
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ISE @ ise @ PGV2009 |
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1214 |
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Author |
Francisco Jose Perales; Yuhua Luo; Juan J. Villanueva |
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Title |
Un metodo Automatico de Rotoscopia Sin Marcas para el Estudio del Movimiento Humano Basado en un modelo Biomecanico. |
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Conference Article |
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1991 |
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Primer Congreso Español de Informatica Grafica |
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53-65 |
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Madrid |
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ISE @ ise @ PLV1991 |
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266 |
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Author |
A. Pujol; Juan J. Villanueva |
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Title |
Desarrollo de una interface basada en la utilizacion de redes neuronales aplicadas a la clasificacion de las respuestas electroencefalograficas a estimulos visuales. |
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1996 |
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XIV Congreso anual de la sociedad española de ingenieria biomedica |
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ISE @ ise @ PuV1996 |
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215 |
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Author |
A. Pujol; Juan J. Villanueva; Jose Luis Alba |
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Title |
Efficient Computation of Face Shape Similarity Using Distance Transform Eigendecomposition and Valleys. |
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Miscellaneous |
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2001 |
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IEEE International Conference on Image Processing (ICIP 2001), 1:1030–1033 |
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Grecia |
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ISE @ ise @ PVA2001 |
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203 |
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Author |
Francisco Jose Perales; Juan J. Villanueva; Yuhua Luo |
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Title |
Matching Criteria |
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Conference Article |
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1991 |
Publication |
Computer and Information Sciences VI, Proceedings of the 1991 International Symposium on Computer and Information Sciences |
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1 |
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1029-1038 |
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Antalya, Turkey, 30 October-2 November 1991 |
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Elsevier Science Pub. |
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0097-8493 |
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ISE @ ise @ PVL1991a |
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264 |
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Author |
Francisco Jose Perales; Juan J. Villanueva; Yuhua Luo |
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Title |
An automatic two-camera human motion perception system based on biomechanical model matching |
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1991 |
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IEEE International Conference on Systems, Man and Cybernetics |
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2 |
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856-858 |
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ISE @ ise @ PVL1991b |
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265 |
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Author |
A. Pujol; Juan J. Villanueva; H. Wechsler |
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Title |
Automatic View Based Caricaturing. |
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2000 |
Publication |
15 th International Conference on Pattern Recognition |
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1 |
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1072-1075 |
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Barcelona. |
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ICPR |
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ISE @ ise @ PVW2000 |
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227 |
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A. Pujol; H. Wechsler; Juan J. Villanueva |
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Title |
Learning and Caricaturing the Face Space Using Self-Organization and Hebbian Learning for Face Processing. |
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2001 |
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11th International Conference on Image Analysis and Processing, ICIAP 2001, 273–278. |
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Italia. |
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ISE @ ise @ PWV2001 |
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205 |
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Author |
D. Rincon; E. Frumento; R. Fogliardi; M. Angel Viñas |
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Title |
Carmen/Carolin: Description and Results of an International Experience of Telemedicine. |
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2000 |
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ISTEP 2000 International Symposium on Telemedicine ang Teleeducation in Practice, 255–230. |
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Slovak Republic. |
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ISE @ ise @ RFF2000 |
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177 |
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