Browsing Volume 31 (2012) by Title

Now showing items 17-36 of 249

    • Beyond Catmull–Clark? A Survey of Advances in Subdivision Surface Methods 

      Cashman, Thomas J. (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Subdivision surfaces allow smooth free‐form surface modelling without topological constraints. They have become a fundamental representation for smooth geometry, particularly in the animation and entertainment industries. ...

    • Biharmonic Coordinates 

      Weber, Ofir; Poranne, Roi; Gotsman, Craig (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Barycentric coordinates are an established mathematical tool in computer graphics and geometry processing, providing a convenient way of interpolating scalar or vector data from the boundary of a planar domain to its ...

    • Biopsy Planner - Visual Analysis for Needle Pathway Planning in Deep Seated Brain Tumor Biopsy 

      Herghelegiu, Paul-Corneliu; Manta, Vasile-Ion; Perin, Radu; Bruckner, Stefan; Gröller, Eduard (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Biopsies involve taking samples from living tissue using a biopsy needle. In current clinical practice they are a first mandatory step before any further medical actions are planned. Performing a biopsy on a deep seated ...

    • Black is Green: Adaptive Color Transformation For Reduced Ink Usage 

      Shapira, Lior; Oicherman, Boris (The Eurographics Association and John Wiley and Sons Ltd., 2012)
      A vast majority of color transformations applied to an image in the digital press industry are static and precalculated. In order to achieve the best quality on a wide variety of different images, these transformations ...

    • CageR: Cage‐Based Reverse Engineering of Animated 3D Shapes 

      Thiery, Jean‐Marc; Tierny, Julien; Boubekeur, Tamy (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      We present CageR: A novel framework for converting animated 3D shape sequences into compact and stable cage‐based representations. Given a raw animated sequence with one‐to‐one point correspondences together with an initial ...

    • Can Mean-Curvature Flow be Modified to be Non-singular? 

      Kazhdan, Michael; Solomon, Jake; Ben-Chen, Mirela (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      This work considers the question of whether mean-curvature flow can be modified to avoid the formation of singularities. We analyze the finite-elements discretization and demonstrate why the original flow can result in ...

    • A Cell-Based Light Interaction Model for Human Blood 

      Yim, Daniel; Baranoski, Gladimir V. G.; Kimmel, Brad W.; Chen, T. Francis; Miranda, Erik (The Eurographics Association and John Wiley and Sons Ltd., 2012)
      The development of predictive appearance models for organic tissues is a challenging task due to the inherent complexity of these materials. In this paper, we closely examine the biophysical processes responsible for the ...

    • Centroidal Voronoi Tessellation of Line Segments and Graphs 

      Lu, Lin; Lévy, Bruno; Wang, Wenping (The Eurographics Association and John Wiley and Sons Ltd., 2012)
      Centroidal Voronoi Tessellation (CVT) of points has many applications in geometry processing, including remeshing and segmentation, to name but a few. In this paper, we generalize the CVT concept to graphs via a variational ...

    • Co-Segmentation of 3D Shapes via Subspace Clustering 

      Hu, Ruizhen; Fan, Lubin; Liu, Ligang (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      We present a novel algorithm for automatically co-segmenting a set of shapes from a common family into consistent parts. Starting from over-segmentations of shapes, our approach generates the segmentations by grouping the ...

    • Coding Depth through Mask Structure 

      Fortunato, Horacio E.; Oliveira, Manuel M. (The Eurographics Association and John Wiley and Sons Ltd., 2012)
      We present a coded-aperture method based on a family of masks obtained as the convolution of one "hole" with a structural component consisting of an arrangement of Dirac delta functions. We call the arrangement of delta ...

    • Coherent Spatiotemporal Filtering, Upsampling and Rendering of RGBZ Videos 

      Richardt, Christian; Stoll, Carsten; Dodgson, Neil A.; Seidel, Hans-Peter; Theobalt, Christian (The Eurographics Association and John Wiley and Sons Ltd., 2012)
      Sophisticated video processing effects require both image and geometry information. We explore the possibility to augment a video camera with a recent infrared time-of-flight depth camera, to capture high-resolution RGB ...

    • Comparative Evaluation of an Interactive Time-Series Visualization that Combines Quantitative Data with Qualitative Abstractions 

      Aigner, Wolfgang; Rind, Alexander; Hoffmann, Stephan (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      In many application areas, analysts have to make sense of large volumes of multivariate time-series data. Explorative analysis of this kind of data is often difficult and overwhelming at the level of raw data. Temporal ...

    • Comparative Visual Analysis of 2D Function Ensembles 

      Piringer, Harald; Pajer, Stephan; Berger, Wolfgang; Teichmann, Heike (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      In the development process of powertrain systems, 2D function ensembles frequently occur in the context of multirun simulations. An analysis has many facets, including distributions of extracted features, comparisons between ...

    • Comparison of Four Subjective Methods for Image Quality Assessment 

      Mantiuk, Rafał K.; Tomaszewska, Anna; Mantiuk, Radosław (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      To provide a convincing proof that a new method is better than the state of the art, computer graphics projects are often accompanied by user studies, in which a group of observers rank or rate results of several algorithms. ...

    • Computational Design of Rubber Balloons 

      Skouras, Mélina; Thomaszewski, Bernhard; Bickel, Bernd; Gross, Markus (The Eurographics Association and John Wiley and Sons Ltd., 2012)
      This paper presents an automatic process for fabrication-oriented design of custom-shaped rubber balloons. We cast computational balloon design as an inverse problem: given a target shape, we compute an optimal balloon ...

    • A Computational Model of Afterimages 

      Ritschel, Tobias; Eisemann, Elmar (The Eurographics Association and John Wiley and Sons Ltd., 2012)
      Afterimages are optical illusions, particularly well perceived when fixating an image for an extended period of time and then looking at a neutral background, where an inverted copy of the original stimulus appears. The ...

    • Computer Assisted Relief Generation—A Survey 

      Kerber, J.; Wang, M.; Chang, J.; Zhang, J. J.; Belyaev, A.; Seidel, H.‐P. (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      In this paper, we present an overview of the achievements accomplished to date in the field of computer‐aided relief generation. We delineate the problem, classify different solutions, analyse similarities, investigate ...

    • Computing Extremal Quasiconformal Maps 

      Weber, Ofir; Myles, Ashish; Zorin, Denis (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Conformal maps are widely used in geometry processing applications. They are smooth, preserve angles, and are locally injective by construction. However, conformal maps do not allow for boundary positions to be prescribed. ...

    • Computing Voronoi Treemaps: Faster, Simpler, and Resolution-independent 

      Nocaj, Arlind; Brandes, Ulrik (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Voronoi treemaps represent hierarchies as nested polygons. We here show that, contrary to the apparent popular belief, utilization of an algorithm for weighted Voronoi diagrams is not only feasible, but also more efficient ...

    • Conceptualizing Visual Uncertainty in Parallel Coordinates 

      Dasgupta, Aritra; Chen, Min; Kosara, Robert (The Eurographics Association and Blackwell Publishing Ltd., 2012)
      Uncertainty is an intrinsic part of any visual representation in visualization, no matter how precise the input data. Existing research on uncertainty in visualization mainly focuses on depicting data-space uncertainty in ...