Associate Professor (Professor Agregat) at the Universitat Politecnica de Catalunya (UPC) in Barcelona.
Member of the research group ViRVIG.
Coordinator of the Computer Graphics and Virtual Reality speciality of the MIRI master degree at the Facultat de Informàtica (UPC).
President of the Eurographics Spanish Chapter.
I received my PhD in 2006 (as a Fulbright scholar) at the University of Pennsylvania (UPenn) under the supervision of Dr. Norman I. Badler .
Afterwards I was a post-doctorate researcher at the TC Chan Center for Building Simulation and Energy Studies
with Dr. Ali Malkawi and the
Center for Human Modeling and Simulation with Dr. Norman I. Badler .
I completed my undergrad studies at the Universitat de Valencia and received a MSc in Vision, Imaging and Virtual Environments from the University College London.
NEWS
In January 2023 we started a new EU project XR4ED (xr4ed.eu/) to bring our virtual characters into an XR platform for education.
Simulating Heterogeneous Crowds with Interactive Behaviors. Editors: Nuria Pelechano, Jan Allbeck, Mubbasir Kapadia and Norman I. Badler. CRC Press. Taylor and Franics Group. 2016 (Buy from CRC, Amazon) |
Virtual Crowds: Steps Toward Behavioral Realism. Mubbasir Kapadia, Nuria Pelechano, Jan Allbeck and Norman I. Badler. Synthesis Lectures on Visual Computing. Morgan & Claypool Publishers. November 2015. (Buy from M&C, Amazon) |
Virtual Crowds: Methods, Simulation, and Control. Nuria Pelechano, Jan Allbeck and Norman I. Badler. Synthesis Lectures on Computer Graphics and Animation. Morgan & Claypool Publishers. 2008. (Buy from M&C, Amazon) |
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My main research interests are in the field of computer graphics, VR, and simulation and animation of virtual humans and crowds. I am also interested in animation of self-avatars in immersive virtual reality applications to enhance embodiment, and facilitate the interaction with the environmetn and other users.
Current PhD Students:
Jose Luis Ponton
Reiya Itatani
Jon Sanchez
Kexiang Huang (visiting student from Beijing Institute of Technology)
2025 | ![]() |
DragPoser: Motion Reconstruction from Variable Sparse Tracking Signals via Latent Space Optimization.
![]() ![]() J.L Ponton, E. Pujol, A. Aristidou, C. Andujar, N. Pelechano. Computer Graphics Forum (Eurographics). 2025. |
2024 | ![]() |
Social Crowd Simulation: Improving Realism with Social Rules and Gaze Behavior.
![]() R. Itatani, N. Pelechano Motion Interaction and Games MIG'2024. Washington (USA), November 2024 |
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Choreographing multi-degree of freedom behaviors in large-scale crowd simulations.
![]() ![]() K. Huang, G. Ding, D. Yan, R. Tang, T. Huang, N. Pelechano Computers & Graphics. Vol. 124, Nov. 2024. |
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XR4ED: An Extended Reality Platform for Education.
![]() F. Liarokapis, V. Milata, J. L. Ponton, N. Pelechano and H. Zacharatos IEEE Computer Graphics and Applications . Vol. 44, n.4, pp. 79-88 July-Aug. 2024. |
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TRAIL: Simulating the impact of human locomotion on natural landscapes.
![]() ![]() E. Alvarado, O. Argudo, D. Rohmer, M-P. Cani, N. Pelechano The Visual Computer. pp. 1-13. June 2024.(CGI 2024) |
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Stretch your reach: Studying Self-Avatar and Controller Misalignment in Virtual Reality Interaction
![]() J.L. Ponton, R. Keshavarz, A. Beacco, N. Pelechano Conference on Human Factors in Computing Systems(CHI). Honolulu, USA, May 2024. |
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Exploring the Role of Expected Collision Feedback in Crowded Virtual Environments
![]() ![]() H. Yun, J.L. Ponton, A. Beacco, C. Andujar, N. Pelechano IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR). Orlando, USA, March 2024. |
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Simulating real-life scenarios to better understand the spread of diseases under different contexts
![]() R. Blanco, G. Patow, N. Pelechano Scientific Reports- Vol 14 Article No.: 2694. pp 1–17. 2024. (ed. Springer Nature) |
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2023 | ![]() |
SparsePoser: Real-Time Full-Body Motion Reconstruction from Sparse Data
![]() ![]() ![]() J.L. Ponton, H. Yun, A. Aristidou, C. Andujar, N. Pelechano Transactions on Graphics. Vol 43 Issue 1 Article No.: 5. pp 1–14. 2023. (SIGGRAPH ASIA 2023) |
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GREIL-Crowds: Crowd Simulation With Deep Reinforcement Learning and Examples
![]() ![]() P. Charalambous, J. Pettre, V. Vassiliades, Y. Chrysanthou, N. Pelechano Transactions on Graphics. Vol 42. Issue 4. Article No.: 137. pp 1–15 2023. (SIGGRAPH 2023) |
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Fitted Avatars: Automatic skeleton adjustment for self-avatars in Virtual Reality
![]() ![]() J.L. Ponton, V. Ceballos, L. Acosta, A. Ríos, E. Monclús, N. Pelechano Virtual Reality . Springer. 2023. |
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Animation Fidelity in Self-Avatars: Impact on User Performance and Sense of Agency
![]() H. Yun, J. Ponton, C. Andujar, N. Pelechano IEEE Conference Virtual Reality and 3D User Interfaces (IEEE VR). Shanghai, China, April 2023, pp. 286-296, doi: 10.1109/VR55154.2023.00044 |
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2022 | ![]() |
Combining Motion Matching and Orientation Prediction to Animate Avatars for Consumer-Grade VR Devices
![]() ![]() ![]() J. Ponton, H. Yun, C. Andujar, N. Pelechano ACM SIGGRAPH / Eurographics Symposium on Computer Animation (SCA'2022). September 2022. Computer Graphics Forum. vol 41(8). pp 107-118 |
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AvatarGo: Plug and Play self-avatars for VR
![]() ![]() ![]() J. Ponton, E. Monclus, N. Pelechano Eurographics short papers. April 2022. |
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Authoring Virtual Crowds: A Survey
![]() M. Lemonari, R. Blanco, P. Charalambous, N. Pelechano, M. Avraamides, J. Pettre, Y. Chrysanthou Eurographics STAR . April 2022. Computer Graphics Forum, Volume 41 (2022), Number 2. pp.677-701 |
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Towards a human-like approach to path finding
![]() V. Rahmani, N. Pelechano Computers & Graphics. 2022. vol. 102. pp 164-174 Presentation at the EG Spanish Chapter Conference (CEIG) in Spanish ![]() |
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2021 | ||
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Procedural Crowd Generation for Semantically Augmented Virtual Cities
![]() ![]() O. Rogla, G. Patow, N. Pelechano Computers & Graphics. vol 99, pp 83-99. October 2021. |
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The impact of animations in the perception of a simulated crowd
![]() E Molina, A. Ríos, N. Pelechano Computer Graphics International. 2021. |
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2020 | ||
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Avatars rendering and its effect on perceived realism in Virtual Reality
A. Rios, N. Pelechano MARCH: Modeling and Animating Realistic Crowds and Humans 2020. Workshop in 3rd IEEE International Conference on Artificial Intelligence and Virtual Reality (AIVR) |
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The Rocketbox library and the utility of freely available rigged avatars for procedural animation of virtual humans and embodiment
![]() M. Gonzalez Franco, E. Ofek, Y. Pan, A. Antley, A. Steed, B. Spanlang, A. Maselli, D. Banakou, N. Pelechano, S. Orts-Escolano, V. Orvalho, L. Trutoiu, M. Wojcik, M. V. Sanchez-Vives, J. Bailenson, M. Slater, J. Lanier Frontiers in Virtual Reality. 2020. The Rocketbox Avatar Library . GitHub download |
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Comparing navigation meshes: theoretical analysis and practical metrics
![]() W.Van Toll, R.Triesscheijn, M. Kallmann, R. Oliva, N. Pelechano, J. Pettre, R. Geraerts Computers & Graphics. vol 91, pp. 52-82. 2020. |
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Follower behavior under stress in immersive VR.
![]() Alex. Rios, N. Pelechano Virtual Reality. Springer. 2020. |
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Multi-agent parallel hierarchical path finding in navigation meshes (MA-HNA*).
![]() A. Rahmani, N. Pelechano Computers & Graphics. vol 86, pp. 1-14. 2020. |
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2019 | ||
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An automatic tool to facilitate authoring animation blending in game engines.
![]() ![]() L. Delicado, N. Pelechano Motion Interaction and Games MIG'2019. October 28-30. Newcastle Upon Tyne (UK). 2019. |
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The future of avatar‐human interaction in VR, AR and mixed reality applications.
![]() N. Pelechano, J. Pettre, Y. Chrysanthou Eurographics Think Tank 2019. May 6-10. Genova (Italy). 2019. |
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Smooth transitioning between two navigation metaphors for Virtual Reality applications.
![]() I. Salvetti, A. Rios, N. Pelechano Congreso Español de Informatica Grafica. CEIG'19. Sección Española de Eurographics (EGse). June 26-28. San Sebastian (Spain). 2019. |
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2018 | ||
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Users’ locomotor behavior in Collaborative Virtual Reality.
![]() A. Rios, M. Palomar, N. Pelechano Motion Interaction and Games (MIG) 2018. November 8-10. Limassol (Cyprus). 2018. |
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VR-assisted Architectural Design in a Heritage Site: the Sagrada Família Case Study.
![]() C. Andujar, P. Brunet, J. Buxareu, J. Fons, N. Laguarda, J. Pascual, N. Pelechano EUROGRAPHICS Workshop on Graphics and Cultural Heritage (EG GCH) 2018. November 12-15. Viena (Austria). 2018. |
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Follower Behavior in a Virtual Environment.
![]() A. Rios, D. Mateu, N. Pelechano Virtual Humans and Crowds in Immersive Environments (VHCIE) 2018. March 18. Reutlingen (Germany). 2018. |
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2017 | ||
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Improvements to Hierarchical Pathfinding for Navigation Meshes.
![]() V. Rahmani, N. Pelechano Motion in Games 2017. November 8-10. Barcelona (Spain). 2017. |
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Procedural Semantic Cities.
O. Rogla, N. Pelechano Congreso Español de Informatica Grafica. CEIG'17. Sección Española de Eurographics (EGse). June 28-30. Seville (Spain). 2017. |
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Eurographics 2017 Tutorial: Introduction to crowd simulation.
J. Pettré, N. Pelechano Eurographics 2017. April 24-28. Lyon (France). 2017. |
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2016 | ||
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A Comparative Study of Navigation Meshes
![]() W. van Toll, R.Triesscheijn, M.Kallmann, R.Oliva, N. Pelechano, J.Pettré, R. Geraerts ACM SIGGRAPH conference on Motion in Games (MIG'2016). October 10-12. San Francisco (USA). 2016. |
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Hierarchical Path-Finding for Navigation Meshes (HNA*)
![]() N. Pelechano, C. Fuentes Computers & Graphics. 2016. |
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A Survey of Real-Time Crowd Rendering A. Beacco, N. Pelechano, C. Andujar Eurographics - State or The Art Reports. May 2016. |
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Feeling Crowded Yet?: Crowd Simulations for VR
![]() N. Pelechano, J. Allbeck IEEE VR Workshop on Virtual Humans and Crowds for Immersive Environment. VHCIE. May 2016. |
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2015 | ||
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A Survey of Real-Time Crowd Rendering
![]() A. Beacco, N. Pelechano, C. Andujar Computer Graphics Forum. October 2015. DOI: 10.1111/cgf.12774 |
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Footstep Parameterized Motion Blending using Barycentric Coordinates
![]() ![]() A. Beacco, N. Pelechano, M. Kapadia, N. Badler Computers & Graphics. vol. 47. April 2015. pp. 105-112. doi free journal download |
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Clearance for diversity of agents’ sizes in Navigation Meshes
![]() R. Oliva, N. Pelechano Computers & Graphics. vol. 47. April 2015. pp. 48-58. doi |
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2014 | ||
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Eurographics 2014 Tutorial: Simulating heterogeneous crowds with interactive behaviors.
N. Pelechano, M. Kapadia, J. Allbeck, Y. Chrysantyou, S. Guy, N. Badler Eurographics 2014. April 7-11. Strasbourg (France). 2014. |
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CAVAST: The Crowd Animation, Visualization, and Simulation Testbed.
![]() ![]() A. Beacco, N. Pelechano Congreso Español de Informatica Grafica. CEIG'14. Sección Española de Eurographics (EGse). Zaragoza(Spain) July 2-4, 2014. |
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Coupling pedestrians with a simulated virtual crowd.
J.I. Rivalcoba, O.D. Gyves, I. Rudomin, N. Pelechano International Conference on Computer Graphics and Applications (GRAPP'2014). January 5-8. Lisbon(Portugal). 2014. |
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2013 | ||
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A Generalized Exact Arbitrary Clearance Technique for Navigation Meshes.
![]() ![]() R. Oliva, N. Pelechano ACM SIGGRAPH conference on Motion in Games (MIG'2013). November 7-9. Dublin (Ireland). 2013. |
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Multi-Domain Real-time Planning in Dynamic Environments.
![]() ![]() M. Kapadia, A. Beacco, F. Garcia, V. Reddy, N. Pelechano, N. Badler ACM SIGGRAPH / Eurographics Symposium on Computer Animation (SCA'2013). July 19-21. Anaheim, California. (USA). 2013. |
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NEOGEN: Near Optimal Generator of Navigation Meshes for 3D Multi-Layered Environments.
![]() ![]() R. Oliva, N. Pelechano Computer & Graphics. vol. 37, no.5, pp 403-412. Elsevier. August 2013. |
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Dynamic Footsteps Planning for Multiple Characters.
![]() ![]() A. Beacco, N. Pelechano, M. Kapadia. Congreso Español de Informatica Grafica. CEIG'13. Sección Española de Eurographics (EGse). Madrid (Spain) September 17-20, 2013. |
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NavMeshes with Clearance for Different Character Sizes. R. Oliva, N. Pelechano. Congreso Español de Informatica Grafica. CEIG'13. Sección Española de Eurographics (EGse). Madrid (Spain) September 17-20, 2013. |
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Introductory Graphics for Very Diverse Audiences. ![]() M. Fairen, N. Pelechano. Proceeding Eurographics - Education Papers. 2013. |
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2012 | ||
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A GPU Accelerated Method for the Automatic Generation of Near-Optimal Navigation Meshes. (
abstract ) R. Oliva, N. Pelechano. Congreso Español de Informatica Grafica. CEIG'12. Sección Española de Eurographics (EGse). Jaen (Spain) September 12-14, 2012. |
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Distance Learning in Computer Graphics.
![]() A. Chica, M. Fairen, N. Pelechano. Proceeding Eurographics - Education Papers. pp 65-72. 2012. |
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Efficient rendering of animated characters through optimized per-joint impostors.
![]() ![]() A. Beacco, C. Andujar, N. Pelechano, B. Spanlang. Journal of Computer Animation and Virtual Worlds. vol. 23, no.1, pp 33-47. 2012. | |
2011 | ||
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A flexible approach for output-sensitive rendering of animated characters. ![]() ![]() A. Beacco, B. Spanlang, C. Andujar, N. Pelechano. Computer Graphics Forum. vol. 30, no. 8, pp 2328-2340. December 2011. CloseUp.mkv |
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Automatic Generation of Suboptimal NavMeshes. ![]() ![]() R. Oliva, N. Pelechano. The Fourth International Conference on Motion in Games 2011 (MIG2011), Edinburgh (UK), November 13-15, 2011. | |
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Avatar Locomotion in Crowd Simulation. ![]() N. Pelechano, B. Spanlang, A. Beacco. The International Journal of Virtual Reality (IJVR) vol. 10, no. 1, pp 13-19, March 2011. International Conference on Computer Animation and Social Agents (CASA2011). Chengdu, (China) May 26-28, 2011. videos: CrowdComparison.mkv CrowdAPM.mkv OneAgentComparison.mkv OneAgent.mkv OriginalAnimLib.mkv |
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How the Ocean Personality Model Affects the Perception of Crowds. ![]() F. Durupinar, N. Pelechano, J. Allbeck, U. Gudukbay, N. Badler. IEEE Computer Graphics and Applications. vol. 31, no. 3, pp. 22-31, May/June, 2011 |
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2010 | ||
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Efficient elimination of foot sliding for crowds. ![]() A. Beacco, B. Spanlang, N. Pelechano. The ACM SIGGRAPH / Eurographics Symposium on Computer Animation (SCA'10). Poster and Extended Abstract. Madrid (Spain) 2-4 July 2010. |
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Output-Sensitive Rendering of Detailed Animated Characters for Crowd Simulation. A. Beacco, B. Spanlang, C. Andujar, N. Pelechano. Congreso Español de Informatica Grafica. CEIG'10. Sección Española de Eurographics (EGse). Valencia (Spain) September 7-10, 2010. |
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2009 | ||
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A Framework for Rendering, Simulation and Animation of Crowds. N. Pelechano, B. Spanlang, A. Beacco. Congreso Español de Informatica Grafica. CEIG'09. Sección Española de Eurographics (EGse). San Sebastian (Spain) September 9-11, 2009. |
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2008 | ||
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Being a Part of the Crowd: Towards Validating VR Crowds Using Presence. ![]() ![]() N. Pelechano, C. Stocker, J. Allbeck, N. Badler. Seventh International Joint Conference on Autonomous Agents and Multi-Agent Systems. (AAMAS'08) Estoril (Portugal) May 12-16, 2008. | |
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Creating Crowd Variation with the OCEAN Personality Model. (Short paper) ![]() F. Durupinar, J. Allbeck, N. Pelechano and N. Badler. Seventh International Joint Conference on Autonomous Agents and Multi-Agent Systems. (AAMAS'08) Estoril (Portugal) May 12-16, 2008. |
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Evacuation Simulation Models: Challenges in Modeling High Rise Building Evacuation With Cellular Automata Approaches. ![]() N. Pelechano, A. Malkawi. Automation in Construction Journal. vol. 17 no.4, pp.377-385. Elsevier. 2008. |
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2007 | ||
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Feeling Crowded? Exploring Presence in Virtual Crowds. (Short paper) N. Pelechano, C. Stocker, J. Allbeck, N. Badler. Proceedings of PRESENCE 2007. The 10th annual International Workshop on Presence. October 25-27, Barcelona (Spain). pp 373-376. |
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Controlling Individual Agents in High-Density Crowd Simulation.![]() ![]() N. Pelechano, J. Allbeck and N. Badler. ACM SIGGRAPH / Eurographics Symposium on Computer Animation (SCA'07) August 3-4, San Diego (USA). 2007. SCA presentation (pdf) (ppt) | |
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Generating Plausible Individual Agent Movement from Spatio-Temporal Occupancy Data. B. Sunshine-Hill, J.M. Allbeck, N. Pelechano and N. Badler. Workshop of Massive Datasets, Nagoya (Japan) 2007. |
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Comparison of Crowd Simulation for Building Evacuation and an Alternative Approach.
![]() N. Pelechano, A. Malkawi. The 10th International Building Performance Simulation Association Conference and Exhibition. Beijing (China). Sept 3-6. 2007 |
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2006 | ||
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Modeling Crowd and Trained Leader Behavior during Building Evacuation. ![]() N. Pelechano, N. Badler. IEEE Computer Graphics and Applications. vol. 26, no. 6, pp. 80-86, Nov/Dec, 2006. |
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Interoperable human behavior models for simulations. ![]() McDonald, D., Lazarus, R., Leung, A., Hussain, T., Bharathy, G., Eidelson, R.J. Pelechano, N., Sandhaus, E. Silverman, B.G. Proceedings of the 2006 Behavior Representation in Modeling and Simulation (BRIMS) Conference. May 15-18, Baltimore, MD (USA) 2006. |
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2005 | ||
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Crowd Simulation Incorporating Agent Psychological Models, Roles and Communication. ![]() N. Pelechano, K. O'Brien, B. Silverman, N. Badler. First International Workshop on Crowd Simulation. (V-CROWDS '05) Lausanne (Switzerland) 24-25 November 2005. |
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2004 | ||
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A Grid Representation for Distributed Virtual Environments. ![]() P. Morillo, M. Fernandez, N. Pelechano. 2003 Annual Crossgrid Project Workshop & 1st European Across Grids Conference, February, 13th-14th, 2003. Grid Computing, Lecture Note in Computer Science , Springer-Verlag Berlin, volume 2970/2004, pp. 182-189. 2004. (Abstract) (Extended Abstract) |
N. Pelechano, Modeling Realistic Autonomous Agent Crowd Movement: Social Forces, Communication, Roles and Psychological Influences”.
(PhD dissertation, Computer and Information Science, University of Pennsylvania. June 2006)
PhD Abstract.
N. Pelechano, L. Bull, M. Slater. Fast Collision Detection Between Cloth and a Deformable Human Body.
(technical report, University College London, 2003)
N. Pelechano: Real-Time Collision Detection Between Cloth and Skinned Avatars using OBB. 2002 (PDF)
Master Thesis at University College London (UCL) for my MSc VIVE (Vision, Imaging and Virtual Environments)
N. Pelechano:Study and development of a 3D deformation simulation system of flexible figures oriented to be used in characters interactive visualization. 2001 (PDF) (Spanish)
Thesis for my last year of Ingenieria Informatica (Computer Science) at Universitat de Valencia
CLIPE (MSCA-ITN-2019 - Innovative Training Networks) (2020-2024)
LOTTE pedestrian movement study with elevators simulation:
funded by SOM. Carried out at the University of Pennsylvania with Professor Ali Malkawi. (2006)
Modeling of Crowd and Leader Behavior:
funded by the U.S. Army UO FACT. Carried out at the University of Pennsylvania with Professors Norman I. Badler and Barry Silvermann. (2005)
Bystander: Simulation of a virtual scenario where we can study how real people behave when they confront a violent situation. For this project I developed a method to study the relation between human postures and emotions. This project is being developed by the Computer Science Department at the University College London (UCL) (2002-2003)
Prometheus – Cloth Simulator: This project is part of the Prometheus project, a real-time 3D studio broadcast plataform. The Cloth Simulator is being developed by the UCL VR group.
Finestrat: For this project an avatar that can be handle by a real actor has been developed. This avatar includes semiautonomous behavior and flexible deformation modelling based on FFD. Finestrat is part of the ARTIST project, an animation package for real-time interactive simulation. This project has been carried out by the ARTEC group at Institut de Robotica, Universitat de Valencia.
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Postal Address: Universitat Politècnica de Catalunya Computer Science Edifici Omega, Despatx 140 c/ Jordi Girona 1-3 E - 08034 Barcelona, Spain Phone: +34 93 413 7858 Email: npelechano (AT) cs (DOT) upc (DOT) edu