• 3D pore analysis of sedimentary rocks 

    Vergés Garcia, Eduard; Tost Pardell, Daniela; Ayala Vallespí, M. Dolors; Ramos Guerrero, Emilio; Grau Carrion, Sergi (2010)
    Report de recerca
    Acceso abierto
    A 3D representation of the internal structure and fabric of sedimentary rocks is of paramount interest to evaluate their structural parameters such as porosity, pore-size distribution and permeability. The classical ...
  • 3D reconstruction and quantification of porous structures 

    Vergés Garcia, Eduard; Ayala Vallespí, M. Dolors; Grau Carrion, Sergi; Tost Pardell, Daniela (2008)
    Artículo
    Acceso restringido por política de la editorial
    In this paper, we describe the methodology that we have designed to quantify the pores distribution in bone implants and the empirical results that we have obtained with BioCAD designed scaffolds, microCT and confocal ...
  • An Adaptive Cutaway with Volume Context Preservation 

    Grau Carrion, Sergi; Puig Puig, Anna (Springer Berlin / Heidelberg, 2009-11-26)
    Capítulo de libro
    Acceso restringido por política de la editorial
    Knowledge expressiveness of scientific data is one of the most important visualization goals. However, current volume visualization systems require a lot of expertise from the final user. In this paper, we present a ...
  • Animation of 3D Avatars for Rehabilitation of the Upper Limbs 

    Moya, Sergio; Grau Carrion, Sergi; Tost Pardell, Daniela; Campeny, Ricard; Ruiz, Marcel (IEEE Computer Society Publications, 2011-07-29)
    Artículo
    Acceso restringido por política de la editorial
    The paper presents a 3D Virtual Environment (VE) for neurorehabilitation of the upper limb. Patients move one of their arms trying to simulate concrete daily actions, such as grasping a bottle, opening a door or putting ...
  • Assisted navigation for 3D serious games training 

    Moya Santos, Sergio; Grau Carrion, Sergi; Tost Pardell, Daniela (2013)
    Texto en actas de congreso
    Acceso restringido por política de la editorial
    Serious games in 3D virtual environments are becoming a popular tool for professional training activities as well as for rehabilitation. Navigation in 3D is recognized as one of the activity which is more dificult to master ...
  • Bio-CAD analysis of porosity bioimplants 

    Vergés Garcia, Eduard; Ayala Vallespí, M. Dolors; Grau Carrion, Sergi; Tost Pardell, Daniela (2008)
    Texto en actas de congreso
    Acceso restringido por política de la editorial
    In this work we present two methods to compute the porosity from a μCT image. One is the virtual simulation of a porosimeter and the other is a sphere-based heuristic approach. Both methods obtain a graph representing the ...
  • Efficient complementary viewpoint selection in volume rendering 

    Grau Carrion, Sergi; Puig Puig, Anna; Escalera, Sergio; Salamó, Maria; Amoros, Oscar (2013)
    Texto en actas de congreso
    Acceso abierto
    A major goal of visualization is to appropriately express knowledge of scientific data. Generally, gathering visual information contained in the volume data often requires a lot of expertise from the final user to setup ...
  • First-person locomotion in 3D virtual environments: a usability analysis 

    Moya Santos, Sergio; Grau Carrion, Sergi; Tost Pardell, Daniela (2014)
    Artículo
    Acceso abierto
    3D Virtual Environments (VE) are becoming popular as a tool for cognitive, functional and psychological assessment. Navigation in these environments is recognized as one of the most difficult activities in 3D Virtual ...
  • Frame-to-frame coherent GPU splatting 

    Grau Carrion, Sergi; Tost Pardell, Daniela (2008-07-26)
    Texto en actas de congreso
    Acceso restringido por acuerdo de confidencialidad
    Recently, several improvements of the classical splatting volume rendering technique have been proposed, specifically, GPU implementations that considerably speed it up. However, splatting time-varying data, even using ...
  • Frame-to-frame coherent image-aligned sheet-buffered splatting 

    Grau Carrion, Sergi; Tost Pardell, Daniela (2006-06)
    Report de recerca
    Acceso abierto
    Splatting is a classical volume rendering technique that has recently gained in popularity for the visualization of point-based suface models. Up to now, there has been few publications on its adaptation to time-varying ...
  • Hardware and software improvements of volume splatting 

    Vergés Garcia, Eduard; Grau Carrion, Sergi; Tost Pardell, Daniela (2006-05)
    Report de recerca
    Acceso abierto
    This paper proposes different hardware-based acceleration of the three classical splatting strategies: emph{composite-every-sample}, emph{object-space sheet-buffer} and emph{image-space sheet-buffer}.
  • Image-space sheet-buffered splatting on the GPU 

    Grau Carrion, Sergi; Tost Pardell, Daniela (2007-03)
    Report de recerca
    Acceso abierto
    Image-Space Sheet-Buffered Splatting is a popular high quality volume-rendering technique specially suitable for zoomed views of the data. On the contrary to other splatting approaches, it processes the voxels in slabs ...
  • Intelligent interactive volume classification 

    Grau Carrion, Sergi; Puig Puig, Anna; Escalera, Sergio; Salamó, Maria (2013)
    Texto en actas de congreso
    Acceso restringido por política de la editorial
    This paper defines an intelligent and interactive framework to classify multiple regions of interest from the original data on demand, without requiring any preprocessing or previous segmentation. The proposed intelligent ...
  • Region-based illustrative visualization of multimodal datasets 

    Abellán Moreno, Pascual; Tost Pardell, Daniela; Grau Carrion, Sergi; Puig Puig, Anna (2013-06-01)
    Artículo
    Acceso restringido por política de la editorial
    We present as novel method for the exploration of multiple overlapping volumes that provides flexibility to merge data in different ways in different regions. In each region, either one of the modalities is rendered alone ...
  • Serious games for screening pre-dementia conditions: from virtuality to reality? A pilot project 

    Zuchella, Chiara; Sinforiani, Elena; Tassorelli, Cristina; Cavallini, Elena; Tost Pardell, Daniela; Grau Carrion, Sergi; Pazzi, Stefania; Puricelli, Stefano; Bernini, Sara; Bottiroli, Sara; Vecchi, Tomaso; Sandrini, Giorgio; Nappi, Giuseppe (2014-11-02)
    Artículo
    Acceso restringido por política de la editorial
    Conventional cognitive assessment is based on a pencil-and-paper neuropsychological evaluation, which is time consuming, expensive and requires the involvement of several professionals. Information and communication ...
  • State-of-the-art: Frame-to-frame coherence in volume rendering 

    Grau Carrion, Sergi (2008-02)
    Report de recerca
    Acceso abierto
    In this report we review the state-of-the-art in frame-to-frame coherence in time-varying volume rendering.
  • The wise cursor: assisted selection in 3D serious games 

    Moya Santos, Sergio; Grau Carrion, Sergi; Tost Pardell, Daniela (Springer, 2013-06)
    Artículo
    Acceso restringido por política de la editorial
    In recent years, the evolution of 3D graphics hardware and software has lead to a growing interest for serious games in three-dimensional virtual environments for learning, training, and rehabilitation. Many of these ...
  • Time-varying volume visualization 

    Ayala Vallespí, M. Dolors; Campos Miralles, Jordi; Ferré, Maria; Grau Carrion, Sergi; Puig Puig, Anna; Tost Pardell, Daniela (2005-07-22)
    Report de recerca
    Acceso abierto
    Volume rendering is a very active research field in Computer Graphics because of its wide range of applications in various sciences, from medicine to flow mechanics. In this report, we survey a state-of-the-art on time-varying ...
  • Virtual porosimeter 

    Vergés, Eduard; Ayala Vallespí, M. Dolors; Grau Carrion, Sergi; Tost Pardell, Daniela (2007-12)
    Report de recerca
    Acceso abierto
    Recently, the term BioCAD has appeared to refer to the modeling of biological processes. This work focuses on the analysis of structural properties such as porosity of bioimplants for bone reconstruction. Specifically, we ...
  • Virtual Porosimeter 

    Vergés Garcia, Eduard; Ayala Vallespí, M. Dolors; Grau Carrion, Sergi; Tost Pardell, Daniela (2008)
    Artículo
    Acceso restringido por política de la editorial
    Recently, the term Bio-CAD has appeared to refer to the modeling of biological processes. This work focuses on the analysis of structural properties such as porosity of bioimplants for bone reconstruction. Specifically, ...