ViRVIG - Grup de Recerca en Visualització, Realitat Virtual i Interacció Gràfica

 

L'activitat de recerca del nostre grup s'inscriu dins la temàtica de la informàtica gràfica (computer graphics) i engloba, de forma complementària, des dels àmbits més fonamentals (geometria computacional, processament de geometria) a les temàtiques relacionades amb els models geomètrics i de volum (estructures jeràrquiques, models discrets, modelització de sistemes molt complexos), la modelització de l'aparença i dels fenomens naturals, la visualització dels models, i les tècniques avançades per a la interacció amb aquests models i per a la seva presentació en entorns de realitat virtual i augmentada, especialment en dispositius de baix cost i en mòbils. El treball coordinat en aquestes àrees genera coneixement transversal en les diferents vessants de la visualització interactiva, amb aplicació directa a camps com la modelització d'entorns rurals i urbans, l'anàlisi visual aplicat a medicina, la simulació de multituds o la preservació del territori i del patrimoni cultural.

La actividad de investigación de nuestro grupo se inscribe dentro de la temática de la informática gráfica (computer graphics) y engloba, de forma complementaria, desde los ámbitos más fundamentales (geometría computacional, procesamiento de geometría) a las temáticas relacionadas con los modelos geométricos y de volumen (estructuras jerárquicas, modelos discretos, modelización de sistemas muy complejos), la modelización de la apariencia y de los fenómenos naturales, la visualización de los modelos, y las técnicas avanzadas para la interacción con estos modelos y para su presentación en entornos de realidad virtual y aumentada, especialmente en dispositivos de bajo coste y en móviles. El trabajo coordinado en estas áreas genera conocimiento transversal en las diferentes vertientes de la visualización interactiva, con aplicación directa en campos como la modelización de entornos rurales y urbanos, el análisis visual aplicado a medicina, la simulación de multitudes o la preservación del territorio y del patrimonio cultural.

The group focuses on research in modelling, visualisation and advanced graphics interaction and its application to virtual reality. The group's objectives are the following:
- To produce high-quality research results in the areas of visualisation, geometric and volumetric modelling, physically based animation, virtual reality and advanced interaction.
- To train new researchers and doctoral students in these areas.
- To foster and maintain strong international cooperation.
- To work on relevant research projects funded by various institutions (EU, CICYT, etc.)
- To transfer the results of the group?s research and VR applications (virtual prototypes for industrial design, medical applications, architecture, cultural heritage, low-cost VR systems, etc.) to industry and other organisations.

The group focuses on research in modelling, visualisation and advanced graphics interaction and its application to virtual reality. The group's objectives are the following:
- To produce high-quality research results in the areas of visualisation, geometric and volumetric modelling, physically based animation, virtual reality and advanced interaction.
- To train new researchers and doctoral students in these areas.
- To foster and maintain strong international cooperation.
- To work on relevant research projects funded by various institutions (EU, CICYT, etc.)
- To transfer the results of the group?s research and VR applications (virtual prototypes for industrial design, medical applications, architecture, cultural heritage, low-cost VR systems, etc.) to industry and other organisations.

Recent Submissions

  • Analysis and visual exploration of prediction algorithms for public bicycle sharing systems 

    Cortez Ordóñez, Alexandra Piedad; Vázquez Alcocer, Pere Pau (Curran associates, 2021)
    Conference lecture
    Restricted access - publisher's policy
    Public bicycle sharing systems have become an increasingly popular means of transportation in many cities around the world. However, the information shown in mobile apps or websites is commonly limited to the system’s ...

  • A platform for developing and fine tuning adaptive 3D navigation techniques for the immersive web 

    Kamal, Ahmed; Andújar Gran, Carlos Antonio (Association for Computing Machinery (ACM), 2021)
    Conference report
    Open Access
    Navigating through a virtual environment is one of the major user tasks in the 3D web. Although hundreds of interaction techniques have been proposed to navigate through 3D scenes in desktop, mobile and VR headset systems, ...

  • Immersive geometry-based and image-based exploration of cultural heritage models 

    Farràs Llobet, Arnau; Comino Trinidad, Marc; Andújar Gran, Carlos Antonio (European Association for Computer Graphics (Eurographics), 2021)
    Conference report
    Open Access
    Recent advances in 3D acquisition technologies have facilitated the inexpensive digitization of cultural heritage. In addition to the 3D digital model, in many cases multiple photo collections are also available. These ...

  • Digital layered models of architecture and mural paintings over time 

    Guardia Pons, Milagros; Pogliani, Paola; Bordi, Giulia; Charalambous, Panayiotis; Andújar Gran, Carlos Antonio; Muñoz Pandiella, Imanol; Pueyo Sandez, Francesc Xavier (European Association for Computer Graphics (Eurographics), 2021)
    Conference report
    Open Access
    The European project Enhancement of Heritage Experiences: The Middle Ages. Digital Layered Models of Architecture and Mural Paintings over Time (EHEM) aims to obtain virtual reconstructions of medieval artistic heritage ...

  • Sciatic nerve movement in the deep gluteal space during hip rotations maneuvers 

    Balius Matas, Ramon; Pujol, Montse; Pérez Cuenca, Dolores; Susín Sánchez, Antonio; Corominas Macias, Héctor; Sala Blanch, Xavier (2021-01-01)
    Article
    Open Access
    We hypothesize that the sciatic nerve in the subgluteal space has a specific behavior during internal and external coxofemoral rotation and during isometric contraction of the internal and external rotator muscles of the ...

  • Intensity-guided exposure correction for indoor LiDAR scans 

    Comino Trinidad, Marc; Andújar Gran, Carlos Antonio; Bosch Geli, Carles; Chica Calaf, Antonio; Muñoz-Pandiella, Imanol (European Association for Computer Graphics (Eurographics), 2021)
    Conference lecture
    Open Access
    Terrestrial Laser Scanners, also known as LiDAR, are often equipped with color cameras so that both infrared and RGB values are measured for each point sample. High-end scanners also provide panoramic High Dynamic Range ...

  • Neural colorization of laser scans 

    Comino Trinidad, Marc; Andújar Gran, Carlos Antonio; Bosch Geli, Carles; Chica Calaf, Antonio; Muñoz-Pandiella, Imanol (European Association for Computer Graphics (Eurographics), 2021)
    Conference report
    Open Access
    Laser scanners enable the digitization of 3D surfaces by generating a point cloud where each point sample includes an intensity (infrared reflectivity) value. Some LiDAR scanners also incorporate cameras to capture the ...

  • Sweep encoding: Serializing space subdivision schemes for optimal slicing 

    Comino Trinidad, Marc; Vinacua Pla, Álvaro; Carruesco Llorens, Àlex; Chica Calaf, Antonio; Brunet Crosa, Pere (Elsevier, 2022-05)
    Article
    Open Access
    Slicing a model (computing thin slices of a geometric or volumetric model with a sweeping plane) is necessary for several applications ranging from 3D printing to medical imaging. This paper introduces a technique designed ...

  • A topological comparison of surface extraction algorithms 

    Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Fairén González, Marta; Navazo Álvaro, Isabel; Vinacua Pla, Álvaro (2021-10-22)
    Research report
    Open Access
    In many application areas, it is useful to convert the discrete information stored in the nodes of a regular grid into a continuous boundary model. Isosurface extraction algorithms differ on how the discrete information ...

  • The impact of animations in the perception of a simulated crowd 

    Molina López, Elena; Ríos Jerez, Alejandro; Pelechano Gómez, Núria (Springer, 2021)
    Part of book or chapter of book
    Open Access
    Simulating virtual crowds is an important challenge in many areas such as games and virtual reality applications. A lot of effort has been dedicated to improving pathfinding, collision avoidance, or decision making, to ...

  • Towards a human-like approach to path finding 

    Rahmani, Vahid; Pelechano Gómez, Núria (Elsevier, 2022-02)
    Article
    Restricted access - publisher's policy
    Path finding for autonomous agents has been traditionally driven by finding optimal paths, typically by using A* search or any of its variants. When it comes to simulating virtual humanoids, traditional approaches rarely ...

  • Procedural crowd generation for semantically augmented virtual cities 

    Roglà Pujalt, Otger; Patow, Gustavo Ariel; Pelechano Gómez, Núria (2021-10)
    Article
    Restricted access - publisher's policy
    Authoring meaningful crowds to populate a virtual city can be a cumbersome, time-consuming and an error-prone task. In this work, we present a new framework for authoring populated environments in an easier and faster way, ...

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