• Conference Object  

      Affect recognition during active game playing based on posture skeleton data 

      Zacharatos, H.; Gatzoulis, C.; Chrysanthou, Yiorgos L. (2013)
      The affective state of a player during game playing has a significant effect on the player's motivation and engagement. Recognising player's emotions during games can help game designers improve the user experience by ...
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      A case study of a virtual audience in a reconstruction of an ancient Roman odeon in Aphrodisias 

      Cain, K.; Chrysanthou, Yiorgos L.; Niccolucci, F.; Silberman, N. (Association for Computing Machinery, Inc, 2005)
      The benefits of including virtual humans into cultural heritage reconstructions are twofold: the realism of architectural models is increased by populating them
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      The CREATE project: Mixed reality for design, education, and cultural heritage with a constructivist approach 

      Loscos, C.; Widenfeld, H. R.; Roussou, M.; Meyer, A.; Tecchia, F.; Drettakis, George; Gallo, E.; Martinez, A. R.; Tsingos, N.; Chrysanthou, Yiorgos L.; Robert, L.; Bergamasco, M.; Dettori, A.; Soubra, S. (Institute of Electrical and Electronics Engineers Inc., 2003)
      The global scope of the CREATE project is to develop a mixed-reality framework that enables highly interactive real-time construction and manipulation of photo-realistic, virtual worlds based on real data sources. This ...
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      Employing virtual worlds for HCI education: A problem-based learning approach 

      Zaharias, Panagiotis; Belk, Marios; Samaras, George S. (2012)
      In this paper we describe our experience focused on teaching an introductory course in HCI by employing a 3D virtual world. Our main pedagogical philosophy is presented which claims that problem-based learning activities ...
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      Fitting behaviors to pedestrian simulations 

      Lerner, A.; Fitusi, E.; Chrysanthou, Yiorgos L.; Cohen-Or, D. (2009)
      In this paper we present a data-driven approach for fitting behaviors to simulated pedestrian crowds. Our method annotates agent trajectories, generated by any crowd simulator, with action-tags. The aggregate effect of ...
    • Article  

      Image-based crowd rendering 

      Tecchia, F.; Loscos, C.; Chrysanthou, Yiorgos L. (2002)
      Rendering crowded scenes with thousands of different animated virtual people in real time is challenging. An image-based rendering approach for displaying multiple avatars is proposed. The system allows real-time rendering ...
    • Conference Object  

      Motion indexing of different emotional states using LMA components 

      Aristidou, Andreas; Chrysanthou, Yiorgos L. (2013)
      Recently, there has been an increasing use of pre-recorded motion capture data, making motion indexing and classification essential for animating virtual characters and synthesising different actions. In this paper, we use ...
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      A selective approach for tone mapping High Dynamic Range content 

      Artusi, A.; Michael, D.; Roch, B.; Chrysanthou, Yiorgos L.; Chalmers, A. (2011)
      Large resolution High Dynamic Range (HDR) textures/images are becoming common in computer graphics applications. However, it is still a prohibitive task to perform on them a filtering step such as tone mapping in real-time. ...
    • Article  

      A survey of visibility for walkthrough applications 

      Cohen-Or, D.; Chrysanthou, Yiorgos L.; Silva, C. T.; Durand, F. (2003)
      Visibility algorithms for walkthrough and related applications have grown into a significant area, spurred by the growth in the complexity of models and the need for highly interactive ways of navigating them. In this ...
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      View volume culling using a probabilistic caching scheme 

      Slater, Mel; Chrysanthou, Yiorgos L. (ACM, 1997)
      This paper a new algorithm for view volume culling. During an interactive walkthrough of a 3D scene, at any moment a large proportion of objects will be outside of the view volume. Frame-to-frame coherence implies that the ...
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      Viewspace partitioning of densely occluded scenes 

      Chrysanthou, Yiorgos L.; Cohen-Or, Daniel; Zadicario, Eyal (ACM, 1998)
      Computing the visibility of out-door scenes is often much harder than of in-door scenes. The difficulty is that although the majority of objects are hidden, some parts might be visible at a distance in an arbitrary location, ...
    • Article  

      Visualizing crowds in real-time 

      Tecchia, F.; Loscos, C.; Chrysanthou, Yiorgos L. (2002)
      Real-time crowd visualization has recently attracted quite an interest from the graphics community and, as interactive applications become even more complex, there is a natural demand for new and unexplored application ...