Now showing items 1-20 of 28

    • 3D objects reconstruction from frontal images: an example with guitars 

      Beacco Porres, Alejandro; Gallego Vila, Jaime; Slater, Mel (Springer, 2022-09-15)
      Article
      Open Access
      This work deals with the automatic 3D reconstruction of objects from frontal RGB images. This aims at a better understanding of the reconstruction of 3D objects from RGB images and their use in immersive virtual environments. ...
    • A framework for rendering, simulation and animation of crowds 

      Pelechano Gómez, Núria; Spanlang, Bernhard; Beacco Porres, Alejandro (2009)
      Conference report
      Restricted access - publisher's policy
      Real-time crowd simulation for virtual environment applications requires not only navigation and locomotion in large environments while avoiding obstacles and agents, but also rendering high quality 3D fully articulated ...
    • A separate reality : An update on place Illusion and plausibility in virtual reality 

      Slater, Mel; Banakou, Domna; Beacco Porres, Alejandro; Gallego Vila, Jaime; Macia Varela, Francisco; Oliva Martínez, Ramon (2022-06-27)
      Article
      Open Access
      We review the concept of presence in virtual reality, normally thought of as the sense of “being there” in the virtual world. We argued in a 2009 paper that presence consists of two orthogonal illusions that we refer to ...
    • A survey of real-time crowd rendering 

      Beacco Porres, Alejandro; Pelechano Gómez, Núria; Andújar Gran, Carlos Antonio (2016-12)
      Article
      Open Access
      In this survey we review, classify and compare existing approaches for real-time crowd rendering. We first overview character animation techniques, as they are highly tied to crowd rendering performance, and then we analyze ...
    • An embodied perspective as a victim of sexual harassment in virtual reality reduces action conformity in a later Milgram obedience scenario 

      Neyret, Solène; Navarro Muncunill, Xavier; Beacco Porres, Alejandro; Oliva Martínez, Ramon; Bourdin, Pierre; Valenzuela Ruiz, Jose; Barberia, Itxaso; Slater, Mel (Nature, 2020-04-10)
      Article
      Open Access
      Group pressure can often result in people carrying out harmful actions towards others that they would not normally carry out by themselves. However, few studies have manipulated factors that might overcome this. Here male ...
    • Automated virtual reality cognitive therapy versus virtual reality mental relaxation therapy for the treatment of persistent persecutory delusions in patients with psychosis (THRIVE): a parallel-group, single-blind, randomised controlled trial in England with mediation analyses 

      Freeman, Daniel; Lister, Rachel; Waite, Felicity; Galal, Ushma; Yu, Ly Mee; Lambe, Sinéad; Beckley, Ariane; Bold, Emily; Jenner, Lucy; Diamond, Rowan; Kirkham, Miriam; Beacco Porres, Alejandro (Elsevier, 2023-09)
      Article
      Open Access
      Background: Persecutory delusions are a major psychiatric problem that often do not respond sufficiently to standard pharmacological or psychological treatments. We developed a new brief automated virtual reality (VR) ...
    • Automatic 3D avatar generation from a single RBG frontal image 

      Beacco Porres, Alejandro; Gallego Vila, Jaime; Slater, Mel (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Conference lecture
      Open Access
      We present a complete automatic system to obtain a realistic 3D avatar reconstruction of a person using only a frontal RGB image. Our proposed workflow first determines the pose, shape and semantic information from the ...
    • Automatic 3D character reconstruction from frontal and lateral monocular 2D RGB views 

      Beacco Porres, Alejandro; Gallego Vila, Jaime; Slater, Mel (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Conference report
      Open Access
      We present an automatic animatable 3D character reconstruction method from frontal and lateral RGB pictures of the person to reconstruct. We propose a method where, after obtaining a 3D reconstruction from a frontal view, ...
    • Avatar locomotion in crowd simulation 

      Pelechano Gómez, Núria; Spanlang, Bernhard; Beacco Porres, Alejandro (2011-03)
      Article
      Restricted access - publisher's policy
      This paper presents an Animation Planning Mediator (APM) designed to synthesize animations efficiently for virtual characters in real time crowd simulation. From a set of animation clips, the APM selects the most appropriate ...
    • CAVAST: The crowd animation, visualization, and simulation testbed 

      Beacco Porres, Alejandro; Pelechano Gómez, Núria (European Association for Computer Graphics (Eurographics), 2014)
      Conference report
      Restricted access - publisher's policy
      Simulation, animation and rendering of crowds has become an important part of real-time applications such as videogames. Virtual environments achieve higher realism when being populated by virtual crowds as opposed to ...
    • Disturbance and plausibility in a virtual rock concert: a pilot study 

      Beacco Porres, Alejandro; Oliva Martínez, Ramon; Cabreira Sánchez, Carlos; Gallego Vila, Jaime; Slater, Mel (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Conference report
      Open Access
      We present methods used to produce and study a first version of an attempt to reconstruct a 1983 live rock concert in virtual reality. An approximately 10 minute performance by the rock band Dire Straits was rendered in ...
    • Effective user studies in computer graphics 

      Malpica Mallo, Sandra; Sun, Qi; Kellnhofer, Petr; Beacco Porres, Alejandro; Senel, Gizem; McDonnell, Rachel; Flores Vargas, Mauricio (European Association for Computer Graphics (Eurographics), 2023)
      Conference lecture
      Open Access
      User studies are a useful tool for researchers, allowing them to collect data on how users perceive, interact with and process different types of sensory information. If planned in advance, user experiments can be leveraged ...
    • Efficient elimination of foot sliding for crowds 

      Spanlang, Bernhard; Pelechano Gómez, Núria; Beacco Porres, Alejandro (2010)
      Conference lecture
      Restricted access - publisher's policy
      This poster presents an efficient Animation Planning Mediator (APM) designed to animate virtual characters in real time for crowd simulation. The APM selects the most appropriate animation clip available for each character ...
    • Efficient rendering of animated characters through optimized per-joint impostors 

      Beacco Porres, Alejandro; Andújar Gran, Carlos Antonio; Pelechano Gómez, Núria; Spanlang, Bernhard (2012-02)
      Article
      Restricted access - publisher's policy
      In this paper, we present a new impostor-based representation for 3D animated characters supporting real-time rendering of thousands of agents. We maximize rendering performance by using a collection of pre-computed ...
    • Evaluating participant responses to a virtual reality experience using reinforcement learning 

      Llobera Mahy, Joan; Beacco Porres, Alejandro; Oliva Martínez, Ramon; Senel, Gizem; Banakou, Domna; Slater, Mel (Royal Society, 2021-09-15)
      Article
      Open Access
      Virtual reality applications depend on multiple factors, for example, quality of rendering, responsiveness, and interfaces. In order to evaluate the relative contributions of different factors to quality of experience, ...
    • Exploiting the potential of image based crowd rendering 

      Izquierdo, Maria; Beacco Porres, Alejandro; Pelechano Gómez, Núria; Andújar Gran, Carlos Antonio (European Association for Computer Graphics (Eurographics), 2015)
      Conference lecture
      Restricted access - publisher's policy
      Per-joint impostors have been used to achieve high performance when rendering thousands of agents, while still allowing us to blend animation. This provides interactively animated crowds and reduces the memory footprint ...
    • Footstep parameterized motion blending using barycentric coordinates 

      Beacco Porres, Alejandro; Pelechano Gómez, Núria; Kapadia, Mubbasir; Badler, Norman (2015-04-01)
      Article
      Open Access
      This paper presents a real-time animation system for fully embodied virtual humans that satisfies accurate foot placement constraints for different human walking and running styles. Our method offers a fine balance between ...
    • Impostor-based crowd rendering 

      Beacco Porres, Alejandro; Pelechano Gómez, Núria; Andújar Gran, Carlos Antonio (CRC Press, 2016-09-27)
      Part of book or chapter of book
      Restricted access - publisher's policy
      Real-time rendering of detailed animated characters in crowd simulations is still a challenging problem in computer graphics. State-of-the-art approaches can render up to several thousand agents by consuming most of the ...
    • La realidad virtual en el aprendizaje de historia mediante la interacción con humanoides virtuales 

      Muñoz, Albert; Besora Vilardaga, Isaac; Creus López, Carles; Pelechano Gómez, Núria; Brunet Crosa, Pere; Beacco Porres, Alejandro (2009)
      Conference report
      Open Access
      La realidad virtual ofrece la posibilidad de interactuar de manera inmersiva en mundos virtuales 3D. Estos mundos virtuales pueden ser representaciones de otros momentos históricos que permiten al usuario explorar los ...
    • Multi-domain real-time planning in dynamic environments 

      Kapadia, Mubbasir; Beacco Porres, Alejandro; Garcia, Francisco; Reddy, Vivek; Pelechano Gómez, Núria; Badler, Norman I. (2013)
      Conference lecture
      Restricted access - publisher's policy
      This paper presents a real-time planning framework for multi-character navigation that enables the use of multiple heterogeneous problem domains of differing complexities for navigation in large, complex, dynamic virtual ...