Xavier Roca

Roca, Xavier

Position: Head of the group

Address:

Centre de Visi├│ per Computador
Edifici O
Campus UAB
08193 - Bellaterra - Cerdanyola (Barcelona)
Spain

Fax: 935811670

E-mail: xavir@cvc.uab.es

Personal Page

Brief Biography

Dr. Xavier Roca received the degree in Computer Sciences in 1990 from the Universitat Aut├▓noma de Barcelona and the PhD degree in Computer Sciences in 1998 from the Universitat Aut├▓noma de Barcelona. Since 1993 he is an associate professor at the Computer Sciences Department of the Universitat Aut├▓noma de Barcelona and a staff researcher of the CVC. He has participated in a several projects in computer vision, with private and public founds. In 2002, with other members of the CVC create a spin-off from the results of a research projects. He has published 30 papers in national and international conferences and journals. From 1998-2003 he was marketing director of the CVC and from 2003-04 vice-director. From the beginning of 2006 is Director of the Computer Science Department of Universitat Autonoma de Barcelona.


Publications

    JCR Journals

  1. Marco Pedersoli, Jordi Gonzàlez, Xu Hu, F. Xavier Roca, " Toward Real-Time Pedestrian Detection Based on a Deformable Template Model ", IEEE Transactions on Intelligent Transportation Systems, in press, September, 2013

  2. Noha M. Elfiky, Jordi Gonzàlez, F. Xavier Roca, " Compact and Adaptive Spatial Pyramids for Scene Recognition ", Image and Vision Computing, in press, May, 2012

  3. Wenjuan Gong, Jordi Gonzàlez and F. Xavier Roca, " Human Action Recognition based on Estimated Weak Poses ", EURASIP Journal on Advances in Signal Processing, in press, June, 2012

  4. Bhaskar Chakraborty, Jordi Gonzàlez, F. Xavier Roca, " Large scale continuous visual event recognition using max-margin Hough transformation framework ", Computer Vision and Image Understanding, in press., December, 2012

  5. Carles Fernández, Pau Baiget, F.Xavier Roca and Jordi Gonzàlez, " Determining the best suited semantic events for cognitive surveillance ", Expert Systems with Applications, doi:10.1016/j.eswa.2010.09.070, Volume 38, Issue 4, April, 2011

  6. Carles Fernández, Pau Baiget, F.Xavier Roca and Jordi Gonzàlez, " Augmenting video surveillance footage with virtual agents for incremental event evaluation ", Pattern Recognition Letters, doi:10.1016/j.patrec.2010.09.027, Volume 32, Issue 6, April, 2011

  7. Marco Pedersoli, Jordi Gonzàlez, Andrew D. Bagdanov, Xavier Roca, " Efficient Discriminative Multiresolution Cascade for Real-Time Human Detection Applications ", Pattern Recognition Letters, Volume 32, Issue 13, pages 1581-1587 , October, 2011

  8. Bhaskar Chakraborty, Andrew D. Bagdanov, Jordi Gonzàlez, F.Xavier Roca, " Human action recognition using an ensemble of body-part detectors ", Expert Systems, in press, doi: 10.1111/j.1468-0394.2011.00610.x, October, 2011

  9. Ivan Huerta, Ariel Amato, F. Xavier Roca, Jordi Gonzàlez, " Exploiting Multiple Cues in Motion Segmentation based on Background Subtraction ", Neurocomputing, in press, October, 2011

  10. Mikhail Mozerov, Ignasi Rius, Xavier Roca, Jordi Gonzàlez, " Nonlinear Synchronization for Automatic Learning of 3D Pose Variability in Human Motion Sequences ", EURASIP Journal on Advances in Signal Processing, volume 2010, article ID 507247, 10 pages, January, 2010

  11. Ariel Amato, Mikhail Mozerov, Xavier Roca, Jordi Gonzàlez , " Robust Real-Time Background Subtraction Based on Local Neighborhood Patterns ", EURASIP Journal on Advances in Signal Processing, doi:10.1155/2010/901205, Volume 2010, Article ID 901205, 7 pages, June, 2010

  12. Pau Baiget, Carles Fernández, Xavier Roca, Jordi Gonzàlez, " Generation of Augmented Video Sequences Combining Behavioral Animation and Multi-object Tracking ", Computer Animation and Virtual Worlds 20:473-489, Volume 20, Issue 4 , Pages 447 - 489, July/August, 2009

  13. Jordi Gonzàlez, Daniel Rowe, Javier Varona, F.Xavier Roca, "Understanding Dynamic Scenes based on Human Sequence Evaluation", Image and Vision Computing, Volume 27, Issue 10, Pages 1433-1444, September, 2009

  14. Javier Orozco, F.Xavier Roca, Jordi Gonzàlez, "Real-Time Gaze Tracking With Appearance-Based Models", Machine Vision and Applications, volume 20, number 6, pp. 353-364, October, 2009

  15. Ignasi Rius, Jordi Gonzàlez, Javier Varona, F. Xavier Roca, " Action-specific motion prior for efficient bayesian 3D human body tracking ", Pattern Recognition, volume 42, number 11, pp. 2907-2921, November, 2009

  16. Mikhail Mozerov, Ariel Amato, Xavier Roca, Jordi Gonzàlez, "Trajectory occlusion handling with multiple view distance minimisation clustering", Optical Engineering, volume 47, issue 4, 047202, April, 2008

  17. Carles Fernández, Pau Baiget, F. Xavier Roca, Jordi Gonzàlez, "Interpretation of Complex Situations in a Semantic-Based Surveillance Framework", Signal Processing: Image Communication, Special Issue on Semantic Analysis for Interactive Multimedia Services, volume 23, issue 7, pp. 554-569, August, 2008

  18. Daniel Ponsa, Robert Benavente, Felipe Lumbreras, J. Martinez, Xavier Roca, "Quality control of safety belts by machine vision inspection for real-time production", Optical Engineering 42(04), pp.1114-1120, April, 2003


  19. Other Journals

  20. Mikhail Mozerov, Ariel Amato, Xavier Roca, Jordi Gonz├ález, " Solving the Multi Object Occlusion Problem in a Multiple Camera Tracking System ", Pattern Recognition and Image Analysis, volume 19, number 1, pp. 165ÔÇô171, March, 2009

  21. Ignasi Rius, Jordi Gonzàlez, Mikhail Mozerov, F. Xavier Roca, " Automatic Learning of 3D Pose Variability in Walking Performances for Gait Analysis ", International Journal for Computational Vision and Biomechanics, volume 1, number 1, pp. 33-43, January-June, 2008

  22. Carles Fernández, Xavier Roca, Jordi Gonzàlez, "Providing Automatic Multilingual Text Generation to Artificial Cognitive Systems", Vigo International Journal of Applied Linguistics, number 5, pp. 37 - 62, October, 2008

  23. Jordi Gonzàlez, Javier Varona, F. Xavier Roca, Juan J. Villanueva, " A Comparison Framework for Walking Performances using aSpaces ", Electronic Letters on Computer Vision and Image Analysis, Special Issue on Articulated Motion, volume 5, number 3, pp. 105-116, August, 2005


  24. Book Chapters

  25. Ariel Amato, Ivan Huerta, Mikhail G. Mozerov, F. Xavier Roca, Jordi Gonzàlez , " Moving Cast Shadows Detection Methods for Video Surveillance Applications ", Augmented Vision and Reality, Vol. 6, Chapter 2, pp 23-47, Springer Netherlands, January, 2013

  26. Marc Castell├│, Jordi Gonz├ález, Ariel Amato, Pau Baiget, Carles Fern├índez, Josep M. Gonfaus, Ram├│n A. Mollineda, Marco Pedersoli, Nicol├ís P├ęrez de la Blanca, F. Xavier Roca, " Exploiting Multimodal Interaction Techniques for Video-Surveillance ", Multimodal Interaction in Image and Video Applications, Intelligent Systems Reference Library Vol. 48, Chapter 8, Springer Netherlands, February, 2013

  27. Carles Fernandez, Jordi Gonzàlez, João Manuel R. S. Tavares, F. Xavier Roca, " Towards Ontological Cognitive System ", Topics in Medical Image Processing and Computational Vision, Lecture Notes in Computational Vision and Biomechanics, Vol. 8, Chapter 5, pp 87-99, Springer Netherlands , March, 2013

  28. Pau Baiget, Carles Fernández, Xavier Roca, Jordi Gonzàlez, " Trajectory-Based Abnormality Categorization for Learning Route Patterns in Surveillance ", Detection and Identification of Rare Audiovisual Cues, Studies in Computational Intelligence, Vol. 384, Chapter 7, Springer Netherlands, January, 2012

  29. Murad Al Haj, Carles Fernández, Zhanwu Xiong, Ivan Huerta, Jordi Gonzàlez, F. Xavier Roca, " Beyond the Static Camera: Issues and Trends in Active Vision ", Visual Analysis of Humans: Looking at People, Chapter 2, Springer Netherlands, October, 2011

  30. Nataliya Shapovalova, Carles Fernández, F. Xavier Roca and Jordi Gonzàlez, " Semantics of Human Behavior in Image Sequences ", Computer Analysis of Human Behavior, Chapter 7, Springer Netherlands, November, 2011

  31. Jordi Gonzàlez, Javier Varona, F. Xavier Roca, Juan J. Villanueva, " A Comparison Framework for Walking Performances based on aSpaces ", Progress in Computer Vision and Image Analysis, Series in Machine Perception and Artificial Intelligence, Vol. 73, Chapter 14, pages 245-260, World Scientific, August, 2009

  32. Carles Fernández, Pau Baiget, Xavi Roca, Jordi Gonzàlez, " Exploiting Natural Language Generation in Scene Interpretation ", Human-Centric Interfaces for Ambient Intelligence, Chapter 4, pages 71-93, Elsevier Science and Technology Book Group, October, 2009

  33. Jordi Gonzàlez, F. Xavier Roca, Juan J. Villanueva, " Research Steps Towards Human Sequence Evaluation ", Advances in Computational Vision and Medical Image Processing, Computational Methods in Applied Sciences 13, Chapter 6, pages 105-115, Springer Netherlands, December, 2008


  34. CORE Conferences

  35. Josep M. Gonfaus, Theo Gevers, Arjan Gijsenij, F. Xavier Roca, Jordi Gonzàlez, " Edge Classification Using Photo-Geometric Features ", in 21st International Conference on Pattern Recognition (ICPR'2012), Tsubuka, Japan, November, 2012

  36. Adela Barbulescu, Wenjuan Gong, Jordi Gonzàlez, Thomas Moeslund, F. Xavier Roca, " 3D Human Pose Estimation Using 2D Body Part Detectors ", in 21st International Conference on Pattern Recognition (ICPR'2012), Tsubuka, Japan, November, 2012

  37. Nataliya Shapovalova, Wenjuan Gong, Marco Pedersoli, F. Xavier Roca and Jordi Gonzàlez, " On Importance of Interactions and Context in Human Action Recognition ", in 5th Iberian Conference on Pattern Recognition and Image Analysis (ibPRIA2011), Las Palmas de Gran Canaria, Canary Islands, Spain, June, 2011

  38. Bhaskar Chakraborty, Michael B. Holte, Thomas B. Moeslund, Jordi Gonzàlez, and F. Xavier Roca, " A Selective Spatio-Temporal Interest Point Detector for Human Action Recognition in Complex Scenes ", in 13th International Conference in Computer Vision (ICCV2011), Barcelona, Spain, November, 2011

  39. Murad Al Haj, Andrew D. Bagdanov, Jordi Gonzàlez and F. Xavier Roca, " Reactive object tracking with a single PTZ camera ", in 20th International Conference on Pattern Recognition (ICPR2010), Istanbul, Turkey, August, 2010

  40. Carles Fernández, Jordi Gonzàlez, F.Xavier Roca, " Automatic Learning of Background Semantics in Generic Surveilled Scenes ", in 11th European Conference in Computer Vision (ECCV2010), Crete, Greece, September, 2010

  41. Murad Al Haj, Andrew Bagdanov, Jordi Gonzàlez, F. Xavier Roca, " Robust and Efficient Multipose Face Detection Using Skin Color Segmentation ", in 4th Iberian Conference on Pattern Recognition and Image Analysis (IbPRIA2009), Póvoa do Varzim, Portugal, June, 2009

  42. Mikhail Mozerov, Jordi Gonzàlez, F. Xavier Roca, Juan Villanueva, " Trinocular Stereo Matching with Composite Disparity Space Image ", in 16th IEEE International Conference on Image Processing (ICIP2009), Cairo, Egypt, November, 2009

  43. Javier Orozco, Ognjen Rudovic, F. Xavier Roca, Jordi Gonzàlez, "Confidence Assessment On Eyelid and Eyebrow Expression Recognition", in 8th IEEE International Conference on Automatic Face and Gesture Recognition (FG'2008), Amsterdam, The Netherlands, September, 2008

  44. Javier Orozco, Jordi Gonzàlez, Ignasi Rius, F.Xavier Roca, " Hierarchical Eyelid and Face Tracking ", in 3rd Iberian Conference on Pattern Recognition and Image Analysis (ibPRIA'2007), Girona, Spain, June, 2007

  45. Pau Baiget, Carles Fernández, F. Xavier Roca, Jordi Gonzàlez, " Automatic Learning of Conceptual Knowledge for the Interpretation of Human Behavior in Video Sequences ", in 3rd Iberian Conference on Pattern Recognition and Image Analysis (ibPRIA'2007), Girona, Spain, June, 2007

  46. Javier Orozco, F.Xavier Roca, Jordi Gonzàlez, " Deterministic and Stochastic Methods for Gaze Tracking in Real-Time ", 12th International Conference on Computer Analysis of Images and Patterns (CAIP'2007), Vienna, Austria, August, 2007

  47. Carles Fernández, Pau Baiget, F. Xavier Roca, Jordi Gonzàlez, " Natural Language Descriptions of Human Behavior from Video Sequences ", in 30th Annual German Conference on Artificial Intelligence (KI'2007), Osnabrück, Germany, September, 2007

  48. Carles Fernández, Pau Baiget, F. Xavier Roca, Jordi Gonzàlez, " Semantic Annotation of Complex Human Scenes for Multimedia Surveillance ", in 10th International Conference on Advances in Artificial Intelligence (AI*IA'2007). Special Track on Intelligent Access to Multimedia Data, Villa Mondragone, Monte Porzio Catone, Roma, Italy, September, 2007

  49. Mikhail Mozerov, Ignasi Rius, Xavier Roca, Jordi Gonzàlez, " 3D Human Motion Sequences Synchronization using Dense Matching Algorithm ", in 28th Annual Symposium of the German Association for Pattern Recognition (DAGM'2006), Berlin, Germany, September, 2006

  50. Daniel Rowe, Ignasi Rius, Jordi Gonzàlez, F.Xavier Roca, Juan J. Villanueva, " Probabilistic Image-based Tracking: Improving Particle Filtering ", in 2nd Iberian Conference on Pattern Recognition and Image Analysis (ibPRIA'2005), Estoril, Portugal, June, 2005

  51. Ignasi Rius, Daniel Rowe, Jordi Gonzàlez, F.Xavier Roca, " A 3D Dynamic Model of Human Actions for Probabilistic Image Tracking ", in 2nd Iberian Conference on Pattern Recognition and Image Analysis (ibPRIA'2005), Estoril, Portugal, June, 2005

  52. Ignasi Rius, Daniel Rowe, Jordi Gonzàlez, F.Xavier Roca, " 3D Action Modeling and Reconstruction for 2D Human Body Tracking ", in 3rd International Conference on Advances in Pattern Recognition (ICAPR'2005), Bath, United Kingdom, August, 2005

  53. Javier Varona, Jordi Gonzàlez, F.Xavier Roca, Juan J. Villanueva, " Appearance Tracking for Video Surveillance ", in 1st Iberian Conference on Pattern Recognition and Image Analysis (ibPRIA'2003), Port d'Andratx, Mallorca, Spain, June, 2003

  54. Jordi Gonzàlez, Javier Varona, F.Xavier Roca, Juan J. Villanueva, " Automatic Keyframing of Human Actions for Computer Animation ", in 1st Iberian Conference on Pattern Recognition and Image Analysis (ibPRIA'2003), Port d'Andratx, Mallorca, Spain, June, 2003

  55. Daniel Ponsa, Xavier Roca, "Multiple Model Approach to Deformable Shape Tracking", in 1st Iberian Conference on Pattern Recognition and Image Analysis (ibPRIA'2003), Port d'Andratx, Mallorca, Spain, June, 2003

  56. Javier Varona, Jordi Gonzàlez, F.Xavier Roca, Juan J. Villanueva, " iTrack: Image-based Probabilistic Tracking of People ", in 15th International Conference on Pattern Recognition (ICPR'2000), Barcelona, Spain, September, 2000


  57. Other Conferences and Workshops

  58. Wenjuan Gong, Jordi Gonzàlez, João Manuel R.S. Tavares and F. Xavier Roca, " A New Image Dataset on Human Interactions ", in 7th Conference on Articulated Motion and Deformable Objects (AMDO'2012), Andratx, Mallorca, Spain, July, 2012

  59. Jordi Gonzàlez, Josep M. Gonfaus, Carles Fernández, F. Xavier Roca, " Exploiting Natural-Language Interaction in Video Surveillance Systems ", in V&L Net Workshop on Vision and Language, Brighton, UK, September, 2011

  60. Wenjuan Gong, Andrew D. Bagdanov, F. Xavier Roca, and Jordi Gonzàlez, " Automatic Key Pose Selection for 3D Human Action Recognition ", 6th International Conference on Articulated Motion and Deformable Objects (AMDO2010), Andratx, Mallorca, Spain, July, 2010

  61. Josep M. Gonfaus, Xavier Boix, Fahad S. Khan, Joost van de Weijer, Andrew D. Bagdanov, Marco Pedersoli, Joan Serrat, Xavier Roca, Jordi Gonzàlez, " Harmony Potentials: Fusing Global and Local Scale for Semantic Image Segmentation ", the PASCAL Visual Object Classes Challenge Workshop, in conjunction with ECCV2010, Crete, Greece, September, 2010

  62. Pau Baiget, Carles Fernández, Xavier Roca, and Jordi Gonzàlez, " Automatic Learning and Categorization of Anomalies in Video Surveillance ", 1st International Workshop on Detection and Identification of Rare Audiovisual Cues (DIRAC2010), in conjunction with ECML/PKDD, Barcelona, Spain , September, 2010

  63. Mikhail Mozerov, Ariel Amato, Xavier Roca, " Occlusion Handling in Trinocular Stereo using Composite Disparity Space Image ", 19th International Conference on Computer on Graphics and Vision (GraphiConÔÇÖ2009), Moscow, Russia, October, 2009

  64. Pau Baiget, F. Xavier Roca, Jordi Gonzàlez, "Autonomous Virtual Agents for Performance Evaluation of Tracking Algorithms", 5th International Workshop on Articulated Motion and Deformable Objects (AMDO'2008), Andratx, Mallorca, Spain, July, 2008

  65. Ognjen Rudovic, F. Xavier Roca, " Building Temporal Templates for Human Behaviour Classification ", in 1st International Workshop on Tracking Humans for the Evaluation of their Motion in Image Sequences (THEMIS2008), in conjunction with BMVC2008, Leeds (UK), September, 2008

  66. Pau Baiget, Joan Soto, F. Xavier Roca, Jordi Gonzàlez, " Automatic Generation of Computer-Animated Sequences based on Human Behaviour Modelling ", in 10th International Conference on Computer Graphics and Artificial Intelligence (3IA'2007), Athens, Greece, May, 2007

  67. Murad Al Haj, Ariel Amato, F. Xavier Roca, Jordi Gonzàlez, " Face Detection in Color Images using Primitive Shape Features ", In 5th International Conference on Computer Recognition Systems (CORES'2007), Wroclaw, Poland, October, 2007

  68. Jordi Gonz├ález, F. Xavier Roca, Juan Jos├ę Villanueva, " HERMES: A research project on human sequence evaluation ", in Computational Vision and Medical Image Processing (VipIMAGE'2007), Porto, Portugal, October, 2007

  69. Mikhail Mozerov, Ariel Amato, Xavier Roca and Jordi González, "Trajectory Extrapolation for Multiple Views Tracking", in 8th International Conference on Pattern Recognition and Image Analysis (PRIA'2007), Yoshkar-Ola, Russia, October, 2007

  70. Ignasi Rius, Javier Varona, F. Xavier Roca, Jordi Gonzàlez, " Posture Constraints for Bayesian Human Motion Tracking ", in 4th International Workshop on Articulated Motion and Deformable Objects (AMDO-e'2006), Andratx, Mallorca, Spain, July, 2006

  71. Javier Orozco, Pau Baiget, Jordi Gonzàlez, F. Xavier Roca, " Eyelids and Face Tracking in Real-Time ", in 6th International Conference on Visualization, Imaging, and Image Processing (VIIP 2006), Palma de Mallorca, Spain, August, 2006

  72. Jordi Gonzàlez, Javier Varona, F.Xavier Roca, Juan J. Villanueva, " Analysis of Human Walking based on aSpaces ", in 3rd International Workshop on Articulated Motion and Deformable Objects (AMDO'2004), Palma de Mallorca, Spain, September, 2004

  73. Jordi Gonzàlez, Javier Varona, F.Xavier Roca, Juan J. Villanueva, " Situation Graph Trees for Human Behavior Modeling ", n 7th Catalan Conference for Artificial Intelligence (CCIA'2004), Barcelona, Spain, October, 2004

  74. Jordi Gonzàlez, Javier Varona, F.Xavier Roca, Juan J. Villanueva, " Human Sequence Evaluation: towards Knowledge-based Scene Interpretations ", in 6th Catalan Conference for Artificial Intelligence (CCIA'2003), Palma de Mallorca, Spain, October, 2003

  75. Jordi Gonzàlez, Javier Varona, F.Xavier Roca, Juan J. Villanueva, " A Human Action Comparison Framework for Motion Understanding ", in 6th Catalan Conference for Artificial Intelligence (CCIA'2003), Palma de Mallorca, Spain, October, 2003

  76. Daniel Ponsa, Xavier Roca, "Unsupervised Parameterisation of Gaussian Mixture Models", Topics in Artificial Intelligence, pags 388-398, Springer Verlag, in 5th Catalan Conference for Artificial Intelligence (CCIA'2002), Castell├│n, Spain, October, 2002

  77. Jordi Gonzàlez, Javier Varona, F.Xavier Roca, Juan J. Villanueva, " aSpaces: Action Spaces for Recognition and Synthesis of Human Actions ", in 2nd International Workshop on Articulated Motion and Deformable Objects (AMDO'2002), Palma de Mallorca, Spain, November, 2002

  78. Daniel Ponsa, Xavier Roca, "A Novel Approach to Generate Multiple Shape Models", in 2nd International Workshop on Articulated Motion and Deformable Objects (AMDO'2002), Palma de Mallorca, Spain, November, 2002

  79. Jordi Gonzàlez, Javier Varona, Juan J. Villanueva, F.Xavier Roca, " On-line Human Activity Recognition for Video Surveillance ", Proc. IX National Symposium on Pattern Recognition and Image Analysis (SNRFAI'2001), Castelló, Spain, May, 2001

  80. Jordi Gonzàlez, Javier Varona, F.Xavier Roca, Juan J. Villanueva, " Human Activity Learning and Recognition from Appearance ", World Multiconference on Systemics, Cybernetics and Informatics (SCI'2001), Volume XIII, Orlando, Florida, USA, July, 2001

  81. Javier Varona, Jordi Gonzàlez, F.Xavier Roca, Juan J. Villanueva, " Automatic Selection of Keyframes for Activity Recognition ", in 1st International Workshop on Articulated Motion and Deformable Objects (AMDO'2000), Palma de Mallorca, Spain, September, 2000


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