Exploració per autor "Navazo Álvaro, Isabel"Més informacióMés informació

Ara es mostren els items 80-99 de 104

    • 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)
      Text en actes de congrés
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      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 ...

    • Registro 3D y 4D de imágenes cardíacas SPECT 

      Murillo, Santiago; Navazo Álvaro, Isabel; Vinacua Pla, Álvaro (2007)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Los estudios de cardiología nuclear provenientes de captaciones cardíacas 4D gated SPECT (Single Photon Emission Computed Tomographic) aportan información sobre la perfusión del ventrículo izquierdo en diferentes fases ...

    • 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)
      Text en actes de congrés
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      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 ...

    • Rendering detailed haptic textures 

      Theoktisto, Víctor; Fairén González, Marta; Navazo Álvaro, Isabel; Monclús Lahoya, Eva (2005)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Rendering haptic textures seamlessly out of triangle meshes just by using geometry requires heavy work and does not allow high sampling rates for detailed, rugged models. Better approaches simulate surface texture without ...

    • Representative views and paths for volume models 

      Pau Vázquez, Pere; Monclús Lahoya, Eva; Navazo Álvaro, Isabel (Springer Verlag, 2008)
      Capítol de llibre
      Accés obert
      Volume data models are becoming larger and larger as the capture technology improves. Thus, their visualization requires high computational power. The automatic presentation of volume models through representative images ...

    • Representative views and paths for volume models 

      Vázquez Alcocer, Pere Pau; Monclús Lahoya, Eva; Navazo Álvaro, Isabel (Springer Verlag, 2008-08-27)
      Text en actes de congrés
      Accés obert
      Volume data models are becoming larger and larger as the capture technology improves. Thus, their visualization requires high computational power. The automatic presentation of volume models through representative images ...

    • Research trends in volume modeling 

      Navazo Álvaro, Isabel; Puig Puig, Anna; Tost Pardell, Daniela (1993-09)
      Report de recerca
      Accés obert
      Volume modeling has recently emerged as a promising field of research and development. A generic scheme of volume modeling applications is proposed and applied to existing volume modeling applications. Next, volume modeling ...

    • S3Dc: a 3Dc-based volume compression algorithm 

      Yela Reneses, Héctor; Navazo Álvaro, Isabel; Vázquez Alcocer, Pere Pau (Eurographics association, 2008)
      Text en actes de congrés
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      Volumes acquired for medical purposes are continuously increasing in size, faster than graphic cards memory capacity. Large volumetric datasets do not fit into GPU memory and therefore direct rendering is not possible. ...

    • Semi-automatic colonic content analysis for diagnostic 

      Ceballos Inza, Víctor; Monclús Lahoya, Eva; Vázquez Alcocer, Pere Pau; Bendezú García, Álvaro; Mego, Marianela; Merino, Xavier; Azpiroz Vidaur, Fernando; Navazo Álvaro, Isabel (European Association for Computer Graphics (Eurographics), 2017)
      Comunicació de congrés
      Accés obert
      The analysis of the morphology and content of the gut is necessary in order to understand metabolic and functional gut activity and for diagnostic purposes. Magnetic resonance imaging (MRI) has become an important modality ...

    • ShieldTester: cell-to-cell visibility test for surface occluders 

      Navazo Álvaro, Isabel; Rossignac, Jarek; Jou, J; Shariff, R (North Holland, 2003-09)
      Article
      Accés restringit per política de l'editorial
      We present a novel Cell-To-Cell Visibility (C2CV) algorithm, which given two polyhedra,A and B and a connected and oriented manifold triangle mesh, S offers a simple, fast, and conservative test for detecting when A and B ...

    • Sistema avanzado de CAD Distribuido: integracion final del software 

      Brunet Crosa, Pere; Solano Albajés, Lluís; Monclús Lahoya, Eva; Fairén González, Marta; Vivo Lorenzo, Manuel; Vinacua Pla, Álvaro; Pueyo Sánchez, Xavier; Navazo Álvaro, Isabel; Joan Arinyo, Robert; Vázquez Alcocer, Pere Pau (1999-01-13)
      Report de recerca
      Accés obert
      El presente documento es un resumen de los resultados obtenidos en el marco del proyecto TIC95-0630. Proyecto conjunto entre la Universitat Politecnica de Catalunya y la Universidad de Girona. La integracion de los ...

    • Solid modelling for manufacturing: from Voelcker's boundary evaluation to discrete paradigms 

      Andújar Gran, Carlos Antonio; Brunet Crosa, Pere; Chica Calaf, Antonio; Navazo Álvaro, Isabel; Vinacua Pla, Álvaro (2022-11-01)
      Article
      Accés obert
      Herb Voelcker and his research team laid the foundations of Solid Modelling, on which Computer-Aided Design is based. He founded the ambitious Production Automation Project, that included Constructive Solid Geometry (CSG) ...

    • Solid representation and operation using extended octrees 

      Brunet Crosa, Pere; Navazo Álvaro, Isabel (1990-04)
      Article
      Accés restringit per política de l'editorial
      Solid modelers must be based on reliable and fast algorithms for Boolean operations. The octree model, as well as several generalizations (polytrees, integrated polytrees, extended octrees), is specially well suited for ...

    • Spain: computer graphics education evolves with curricula structure 

      Brunet Crosa, Pere; Navazo Álvaro, Isabel (1996-08)
      Article
      Accés restringit per política de l'editorial
      Computer graphics education is becoming more and more relevant in technical studies in Spain. This positive evolution is partly due to the changes in the curricula structure in the undergraduate studies in Spain in recent ...

    • Tetrahedral mesh subdivision based on underlying volume data 

      Rodríguez Pérez, Lyudmila Odalina; Navazo Álvaro, Isabel; Vinacua Pla, Álvaro (2004-05)
      Report de recerca
      Accés obert
      Given a tetrahedral mesh immersed in a voxel model, we present a method to refine the mesh to reduce the discrepancy between interpolated values based on either scheme at arbitrary locations. An advantage of the method ...

    • The Hybrid Octree: towards the definition of a multiresolution hybrid framework 

      Boada, Imma; Navazo Álvaro, Isabel (2002)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The Hybrid Octree (HO) is an octree-based representation scheme for coding in a single model an exact representation of a surface and volume data. The HO is able to efficiently manipulate surface and volume data independently. ...

    • The Virtual magic lantern: an interaction metaphor for enhanced medical data inspection 

      Monclús Lahoya, Eva; Díaz Iriberri, José; Navazo Álvaro, Isabel; Vázquez Alcocer, Pere Pau (2010-03)
      Report de recerca
      Accés obert
      In Volume Rendering, it is difficult to simultaneously visualize interior and exterior structures. Several approaches have been developed to solve this problem, such as cut-away or exploded views. Nevertheless, in most ...

    • The virtual magic lantern: an interaction metaphor for enhanced medical data inspection 

      Monclús Lahoya, Eva; Díaz Iriberri, José; Vázquez Alcocer, Pere Pau; Navazo Álvaro, Isabel (Association for Computing Machinery (ACM), 2009)
      Comunicació de congrés
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      In this paper we present the Virtual Magic Lantern (VML), an interaction tool tailored to facilitate volumetric data inspection. It behaves like a lantern whose virtual illumination cone provides the focal region which ...

    • The ViRVIG institute 

      Andújar Gran, Carlos Antonio; Navazo Álvaro, Isabel; Vázquez Alcocer, Pere Pau; Patow, Gustavo Ariel; Pueyo Sandez, Francesc Xavier (2011-11-16)
      Article
      Accés obert
      In this paper we present the ViRVIG Institute, a recently created institution that joins two well-known research groups: MOVING in Barcelona, and GGG in Girona. Our main research topics are Virtual Reality devices and ...

    • The Visibility octree. A data structure for 3D navigation 

      Saona Vázquez, Carlos Luis; Navazo Álvaro, Isabel; Brunet Crosa, Pere (1999-06)
      Report de recerca
      Accés obert
      This paper describes the Visibility Octree, a data structure to accelerate 3D navigation through very complex scenes. A conservative visibility algorithm that computes and hierarchically stores the structure at a preprocessing ...