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

  • Abdominal distension after eating lettuce: the role of intestinal gas evaluated in vitro and by abdominal CT imaging 

    Barba, Elisabeth; Sánchez García, Borja; Burri, Emanuel; Accarino Garaventa, Anna María; Monclús Lahoya, Eva; Navazo Álvaro, Isabel; Guarner Aguilar, Francisco; Margolles Barros, Abelardo; Azpiroz Vidaur, Fernando (John Wiley and Sons Ltd., 2019-08-11)
    Article
    Open Access
    Background: Some patients complain that eating lettuce, gives them gas and abdominal distention. Our aim was to determine to what extent the patients' assertion is sustained by evidence. Methods: An in vitro study measured ...

  • Image-based tree variations 

    Argudo Medrano, Óscar; Andújar Gran, Carlos Antonio; Chica Calaf, Antonio (2019-07-09)
    Article
    Restricted access - publisher's policy
    The automatic generation of realistic vegetation closely reproducing the appearance of specific plant species is still a challenging topic in computer graphics. In this paper, we present a new approach to generate new tree ...

  • Visual analysis of research paper collections using normalized relative compression 

    Vázquez Alcocer, Pere Pau (Multidisciplinary Digital Publishing Institute (MDPI), 2019-06-21)
    Article
    Open Access
    The analysis of research paper collections is an interesting topic that can give insights on whether a research area is stalled in the same problems, or there is a great amount of novelty every year. Previous research has ...

  • Depth map repairing for building reconstruction 

    Andújar Gran, Carlos Antonio; Argudo Medrano, Óscar; Besora Vilardaga, Isaac; Brunet Crossa, Pere; Chica Calaf, Antonio; Comino Trinidad, Marc (European Association for Computer Graphics (Eurographics), 2018)
    Conference report
    Open Access
    Structure-from-motion along with multi-view stereo techniques jointly allow for the inexpensive scanning of 3D objects (e.g. buildings) using just a collection of images taken from commodity cameras. Despite major advances ...

  • Top-down model fitting for hand pose recovery in sequences of depth images 

    Madadi, Meysam; Escalera, Sergio; Carruesco Llorens, Àlex; Andújar Gran, Carlos Antonio; Baró, Xavier; Gonzàlez, Jordi (2018-11)
    Article
    Restricted access - publisher's policy
    State-of-the-art approaches on hand pose estimation from depth images have reported promising results under quite controlled considerations. In this paper we propose a two-step pipeline for recovering the hand pose from a ...

  • VR-assisted architectural design in a heritage site: the Sagrada Família case study 

    Andújar Gran, Carlos Antonio; Brunet Crossa, Pere; Buxareu, Jeronimo; Fons Sánchez, Joan; Laguarda, Narcis; Pascual, Jordi; Pelechano Gómez, Núria (European Association for Computer Graphics (Eurographics), 2018)
    Conference report
    Open Access
    Virtual Reality (VR) simulations have long been proposed to allow users to explore both yet-to-built buildings in architectural design, and ancient, remote or disappeared buildings in cultural heritage. In this paper we ...

  • Users’ locomotor behavior in collaborative virtual reality 

    Ríos Jérez, Alejandro; Palomar Soler, Marc; Pelechano Gómez, Núria (Association for Computing Machinery (ACM), 2018)
    Conference report
    Restricted access - publisher's policy
    This paper presents a virtual reality experiment in which two participants share both the virtual and the physical space while performing a collaborative task. We are interested in studying what are the differences in human ...

  • Monte Carlo convolution for learning on non-uniformly sampled point clouds 

    Hermosilla Casajús, Pedro; Ristchel, Tobias; Vázquez Alcocer, Pere Pau; Vinacua Pla, Álvaro; Ropinski, Timo (2018-11)
    Article
    Open Access
    Deep learning systems extensively use convolution operations to process input data. Though convolution is clearly defined for structured data such as 2D images or 3D volumes, this is not true for other data types such as ...

  • Rendering and interacting with volume models in inmmersive environments 

    Fons, Joan; Monclús Lahoya, Eva; Vázquez Alcocer, Pere Pau; Navazo Álvaro, Isabel (European Association for Computer Graphics (Eurographics), 2018)
    Conference report
    Open Access
    The recent advances in VR headsets, such as the Oculus Rift or HTC Vive, at affordable prices offering a high resolution display, has empowered the development of immersive VR applications. Unfortunately, the rendering ...

  • Quasi-automatic colon segmentation on T2-MRI images with low user effort 

    Orellana, Bernat; Monclús Lahoya, Eva; Brunet Crossa, Pere; Navazo Álvaro, Isabel; Bendezú García, Álvaro; Azpiroz Vidaur, Fernando (Springer, 2018)
    Conference report
    Open Access
    About 50% of the patients consulting a gastroenterology clinic report symptoms without detectable cause. Clinical researchers are interested in analyzing the volumetric evolution of colon segments under the effect of ...

  • Sensor-aware normal estimation for point clouds from 3D range scans 

    Comino Trinidad, Marc; Andújar Gran, Carlos Antonio; Chica Calaf, Antonio; Brunet Crossa, Pere (2018)
    Article
    Restricted access - publisher's policy
    Normal vectors are essential for many point cloud operations, including segmentation, reconstruction and rendering. The robust estimation of normal vectors from 3D range scans is a challenging task due to undersampling and ...

  • Terrain super-resolution through aerial imagery and fully convolutional networks 

    Argudo Medrano, Óscar; Chica Calaf, Antonio; Andújar Gran, Carlos Antonio (2018-05-22)
    Article
    Restricted access - publisher's policy
    Despite recent advances in surveying techniques, publicly available Digital Elevation Models (DEMs) of terrains are low-resolution except for selected places on Earth. In this paper we present a new method to turn ...

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