Now showing items 5022-5041 of 16434

    • Extracción Adaptativa de Isosuperficies Topológicamente Correctas 

      Soler, Francisco; Velasco, Francisco; Torres, Juan Carlos; León, Alejandro (The Eurographics Association, 2009)
      Este trabajo propone un nuevo esquema de representación de volúmenes basado en una partición del espacio en poliedros multirresolución, y un método de extracción de isosuperficies sin elementos no-variedad a partir del ...
    • Extracting and Visualizing Uncertainties in Segmentations from 3D Medical Data 

      Faltin, Peter; Chaisaowong, Kraisorn; Kraus, Thomas; Merhof, Dorit (The Eurographics Association, 2014)
      Assessing surfaces of segmentations extracted from 3D image data for medical purposes requires dedicated extraction and visualization methods. In particular, when assessing follow-up cases, the exact volume and confidence ...
    • Extracting Boundary Surface of Arbitrary Topology from Volumetric Datasets 

      Duan, Ye; Qin, Hong (The Eurographics Association, 2001)
      This paper presents a novel, powerful reconstruction algorithm that can recover correct shape geometry as well as its unknown topology from arbitrarily complicated volumetric datasets. The algorithm starts from a simple ...
    • Extracting contour lines from a hierarchical surface model 

      De Floriani, Leila; Mirra, Daniela; Puppo, Enrico (Blackwell Science Ltd and the Eurographics Association, 1993)
      The Hierarchical Triangulated Irregular Network (HTIN) is a structure for representing 2?-dimensional surfaces at different levels of detail through piecewise-linear approximations based on triangulations of the surface ...
    • Extracting Features from Time-Dependent Vector Fields Using Internal Reference Frames 

      Bhatia, Harsh; Pascucci, Valerio; Kirby, Robert M.; Bremer, Peer-Timo (The Eurographics Association and John Wiley and Sons Ltd., 2014)
      Extracting features from complex, time-dependent flow fields remains a significant challenge despite substantial research efforts, especially because most flow features of interest are defined with respect to a given ...
    • Extracting Flow Structures Using Sparse Particles 

      Agranovsky, Alexy; Garth, Christoph; Joy, Kenneth I. (The Eurographics Association, 2011)
      In recent years, Lagrangian Coherent Structures (LCS) have been characterized using the Finite-Time Lyapunov Exponent, following the advection of a dense set of particles into a corresponding flow field. The large amount ...
    • Extracting Jacobi Structures in Reeb Spaces 

      Chattopadhyay, Amit; Carr, Hamish; Duke, David; Geng, Zhao (The Eurographics Association, 2014)
      Jacobi sets have been identified as significant in multi-field topological analysis, but are defined in the domain ofthe data rather than in the Reeb Space. This distinction is significant, as exploiting multi-field topology ...
    • EXTRACTING LINE MAPS FROM IMAGES 

      Jimenez, Javier; Navalon, Jose L. (The Eurographics Association, 1981)
      We present methods to vectorize automatically information given in raster form, the algorithms used are discussed briefly, and results for some test cases are presented. The compression of information is discussed as well ...
    • Extracting Microfacet-based BRDF Parameters from Arbitrary Materials with Power Iterations 

      Dupuy, Jonathan; Heitz, Eric; Iehl, Jean-Claude; Poulin, Pierre; Ostromoukhov, Victor (The Eurographics Association and John Wiley & Sons Ltd., 2015)
      We introduce a novel fitting procedure that takes as input an arbitrary material, possibly anisotropic, and automatically converts it to a microfacet BRDF. Our algorithm is based on the property that the distribution of ...
    • Extracting Ordered Iso-Geodesic Points on the Mesh 

      Tortorici, Claudio; Werghi, Naoufel; Berretti, Stefano (The Eurographics Association, 2020)
      The mesh manifold is one of the most used modalities for representing 3D objects. Although it provides a fully connected not oriented structure, it has some drawback when compared to the grid of pixels of a still image. ...
    • Extracting Sharp Features from RGB‐D Images 

      Cao, Y‐P.; Ju, T.; Xu, J.; Hu, S‐M. (© 2017 The Eurographics Association and John Wiley & Sons Ltd., 2017)
      Sharp edges are important shape features and their extraction has been extensively studied both on point clouds and surfaces. We consider the problem of extracting sharp edges from a sparse set of colour‐and‐depth (RGB‐D) ...
    • Extracting the Essence from Sets of Images 

      Alexa, Marc (The Eurographics Association, 2007)
      We use a set of photographs showing similar scenes as a model for a single photograph this scene. A distance measure for this model is defined by correlating the neigborhoods of pixels in similar positions. A cross analysis ...
    • Extracting, Visualizing and Tracking Mesoscale Ocean Eddies in Two-dimensional Image Sequences Using Contours and Moments 

      Banesh, Divya; Schoonover, Joseph A.; Ahrens, James P.; Hamann, Bernd (The Eurographics Association, 2017)
      We introduce a system to extract and track mesoscale eddies captured in massive global ocean simulations. The major strength and contribution of our system is its design, which is based on two-dimensional image data ...
    • Extraction and Organization of Form Features into a Structured Boundary Model 

      Falcidieno, Bianca; Giannini, Franca (Eurographics Association, 1987)
      A method is presented for the automatic identification and extraction of feature information from the solid model of an object. The procedure consists of recognizing shape features, extracting those features as solid volumes ...
    • Extraction and Simplification of Iso-surfaces in Tandem 

      Attali, Dominique; Cohen-Steiner, David; Edelsbrunner, Herbert (The Eurographics Association, 2005)
      The tandem algorithm combines the marching cube algorithm for surface extraction and the edge contraction algorithm for surface simplification in lock-step to avoid the costly intermediate step of storing the entire extracted ...
    • Extraction and Transfer of Facial Expression Wrinkles for Facial Performance Enhancement 

      Shin, Il-Kyu; Öztireli, A. Cengiz; Kim, Hyeon-Joong; Beeler, Thabo; Gross, Markus; Choi, Soo-Mi (The Eurographics Association, 2014)
      Creating realistic models and animations of human faces with adequate level of detail is very challenging due to the high complexity of facial deformations and the sensitivity of the human visual system to human faces. One ...
    • Extraction and Visual Analysis of Seismic Horizon Ensembles 

      Höllt, Thomas; Chen, Guoning; Hansen, Charles D.; Hadwiger, Markus (The Eurographics Association, 2013)
      Seismic interpretation is an important step in building subsurface models, which are needed to efficiently exploit fossil fuel reservoirs. However, seismic features are seldom unambiguous, resulting in a high degree of ...
    • Extraction of Crack-free Isosurfaces from Adaptive Mesh Refinement Data 

      Weber, Gunther H.; Kreylos, Oliver; Ligocki, Terry J.; Shalf, John M.; Hagen, Hans; Hamann, Bernd; Joy, Kenneth I. (The Eurographics Association, 2001)
      Adaptive mesh refinement (AMR) is a numerical simulation technique used in computational fluid dynamics (CFD). It permits the efficient simulation of phenomena characterized by substantially varying scales in complexity ...
    • Extraction of Critical Points and Nets Based on Discrete Gradient Vector Field 

      De Floriani, Leila; Mesmoudi, Mohammed Mostefa; Danovaro, Emanuele (Eurographics Association, 2002)
      In this paper we address the problem of representing the topology of discrete scalar fields defined on triangulated domains. To this aim, we use the notion of discrete gradient vector field that we have introduced in [4] ...
    • Extraction of Distinguished Hyperbolic Trajectories for 2D Time-Dependent Vector Field Topology 

      Hofmann, Lutz; Sadlo, Filip (The Eurographics Association and John Wiley & Sons Ltd., 2020)
      This paper does two main contributions to 2D time-dependent vector field topology. First, we present a technique for robust, accurate, and efficient extraction of distinguished hyperbolic trajectories (DHT), the generative ...