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Visualization and Computer Graphics, IEEE Transactions on

Issue 4 • Date July-Aug. 2008

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Displaying Results 1 - 25 of 27
  • [Front cover]

    Publication Year: 2008, Page(s): c1
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  • [Inside front cover]

    Publication Year: 2008, Page(s): c2
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  • Guest Editor's Introduction: Special Section on EuroVis

    Publication Year: 2008, Page(s):725 - 726
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  • Online Dynamic Graph Drawing

    Publication Year: 2008, Page(s):727 - 740
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2551 KB) | HTML iconHTML

    This paper presents an algorithm for drawing a sequence of graphs online. The algorithm strives to maintain the global structure of the graph and, thus, the user's mental map while allowing arbitrary modifications between consecutive layouts. The algorithm works online and uses various execution culling methods in order to reduce the layout time and handle large dynamic graphs. Techniques for repr... View full abstract»

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  • Animation of Orthogonal Texture Patterns for Vector Field Visualization

    Publication Year: 2008, Page(s):741 - 755
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2978 KB) | HTML iconHTML

    This paper introduces orthogonal vector field visualization on 2D manifolds: a representation by lines that are perpendicular to the input vector field. Line patterns are generated by line integral convolution (LIC). This visualization is combined with animation based on motion along the vector field. This decoupling of the line direction from the direction of animation allows us to choose the spa... View full abstract»

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  • Data-Driven Visualization and Group Analysis of Multichannel EEG Coherence with Functional Units

    Publication Year: 2008, Page(s):756 - 771
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5095 KB) | HTML iconHTML

    A typical data-driven visualization of electroencephalography (EEG) coherence is a graph layout, with vertices representing electrodes and edges representing significant coherences between electrode signals. A drawback of this layout is its visual clutter for multichannel EEG. To reduce clutter, we define a functional unit (FU) as a data-driven region of interest (ROI). An FU is a spatially connec... View full abstract»

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  • Persuading Visual Attention through Geometry

    Publication Year: 2008, Page(s):772 - 782
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2739 KB) | HTML iconHTML

    Artists, illustrators, photographers, and cinematographers have long used the principles of contrast and composition to guide visual attention. In this paper, we introduce geometry modification as a tool to persuasively direct visual attention. We build upon recent advances in mesh saliency to develop techniques to alter geometry to elicit greater visual attention. Eye-tracking-based user studies ... View full abstract»

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  • Rigid Body Cable for Virtual Environments

    Publication Year: 2008, Page(s):783 - 796
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1195 KB) | HTML iconHTML

    The present paper addresses the real-time simulation of cables for virtual environments. A faithful physical model based on constrained rigid bodies is introduced and discretized. The performance and stability of the numerical method are analyzed in detail and found to meet the requirements of interactive heavy hoisting simulations. The physical model is well behaved in the limit of infinite stiff... View full abstract»

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  • Two-Way Coupled SPH and Particle Level Set Fluid Simulation

    Publication Year: 2008, Page(s):797 - 804
    Cited by:  Papers (14)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1553 KB) | HTML iconHTML

    Grid-based methods have difficulty resolving features on or below the scale of the underlying grid. Although adaptive methods (e.g., RLE, octrees) can alleviate this to some degree, separate techniques are still required for simulating small-scale phenomena such as spray and foam, especially since these more diffuse materials typically behave quite differently than their denser counterparts. In th... View full abstract»

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  • Globally Optimal Surface Mapping for Surfaces with Arbitrary Topology

    Publication Year: 2008, Page(s):805 - 819
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2800 KB) | HTML iconHTML

    Computing smooth and optimal one-to-one maps between surfaces of same topology is a fundamental problem in graphics and such a method provides us a ubiquitous tool for geometric modeling and data visualization. Its vast variety of applications includes shape registration/matching, shape blending, material/data transfer, data fusion, information reuse, etc. The mapping quality is typically measured... View full abstract»

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  • Output-Sensitive 3D Line Integral Convolution

    Publication Year: 2008, Page(s):820 - 834
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2850 KB) | HTML iconHTML

    We propose a largely output-sensitive visualization method for 3D line integral convolution (LIC) whose rendering speed is mainly independent of the data set size and mostly governed by the complexity of the output on the image plane. Our approach of view-dependent visualization tightly links the LIC generation with the volume rendering of the LIC result in order to avoid the computation of unnece... View full abstract»

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  • Scientific Sketching for Collaborative VR Visualization Design

    Publication Year: 2008, Page(s):835 - 847
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1930 KB) | HTML iconHTML

    We present four studies investigating tools and methodologies for artist-scientist-technologist collaboration in designing multivariate virtual reality (VR) visualizations. Design study 1 identifies the promise of 3D interfaces for rapid VR design and also establishes limitations of the particular tools tested with respect to precision and support for animation. Design study 2 explores animating a... View full abstract»

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  • Efficient Morse Decompositions of Vector Fields

    Publication Year: 2008, Page(s):848 - 862
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3413 KB) | HTML iconHTML

    Existing topology-based vector field analysis techniques rely on the ability to extract the individual trajectories such as fixed points, periodic orbits, and separatrices that are sensitive to noise and errors introduced by simulation and interpolation. This can make such vector field analysis unsuitable for rigorous interpretations. We advocate the use of Morse decompositions, which are robust w... View full abstract»

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  • Reconstruction of Cellular Biological Structures from Optical Microscopy Data

    Publication Year: 2008, Page(s):863 - 876
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3162 KB) | HTML iconHTML

    Developments in optical microscopy imaging have generated large high-resolution data sets that have spurred medical researchers to conduct investigations into mechanisms of disease, including cancer at cellular and subcellular levels. The work reported here demonstrates that a suitable methodology can be conceived that isolates modality-dependent effects from the larger segmentation task and that ... View full abstract»

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  • Using Visual Design Experts in Critique-Based Evaluation of 2D Vector Visualization Methods

    Publication Year: 2008, Page(s):877 - 884
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2452 KB) | HTML iconHTML

    We describe an experiment in which art and illustration experts evaluated six 2D vector visualization methods. We found that these expert critiques mirrored previously recorded experimental results; these findings support that using artists, visual designers, and illustrators to critique scientific visualizations can be faster and more productive than quantitative user studies. Our participants su... View full abstract»

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  • Action-Based Multifield Video Visualization

    Publication Year: 2008, Page(s):885 - 899
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3306 KB) | HTML iconHTML

    One challenge in video processing is to detect actions and events, known or unknown, in video streams dynamically. This paper proposes a visualization solution, where a video stream is depicted as a series of snapshots at a relatively sparse interval, and detected actions are highlighted with continuous abstract illustrations. The combined imagery and illustrative visualization conveys multifield ... View full abstract»

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  • GrouseFlocks: Steerable Exploration of Graph Hierarchy Space

    Publication Year: 2008, Page(s):900 - 913
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2939 KB) | HTML iconHTML

    Several previous systems allow users to interactively explore a large input graph through cuts of a superimposed hierarchy. This hierarchy is often created using clustering algorithms or topological features present in the graph. However, many graphs have domain-specific attributes associated with the nodes and edges, which could be used to create many possible hierarchies providing unique views o... View full abstract»

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  • Interactive Rendering of Dynamic Geometry

    Publication Year: 2008, Page(s):914 - 925
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1636 KB) | HTML iconHTML

    Fluid simulations typically produce complex three-dimensional (3D) isosurfaces whose geometry and topology change over time. The standard way of representing such "dynamic geometry" is by a set of isosurfaces that are extracted individually at certain time steps. An alternative strategy is to represent the whole sequence as a four-dimensional (4D) tetrahedral mesh. The isosurface at a specific tim... View full abstract»

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  • Curve-Skeleton Extraction Using Iterative Least Squares Optimization

    Publication Year: 2008, Page(s):926 - 936
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2285 KB) | HTML iconHTML

    A curve skeleton is a compact representation of 3D objects and has numerous applications. It can be used to describe an object's geometry and topology. In this paper, we introduce a novel approach for computing curve skeletons for volumetric representations of the input models. Our algorithm consists of three major steps: 1) using iterative least squares optimization to shrink models and, at the s... View full abstract»

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  • A High-Quality High-Fidelity Visualization of the September 11 Attack on the World Trade Center

    Publication Year: 2008, Page(s):937 - 947
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3627 KB) | HTML iconHTML

    In this application paper, we describe the efforts of a multidisciplinary team toward producing a visualization of the September 11 attack on the North Tower of New York's World Trade Center. The visualization was designed to meet two requirements. First, the visualization had to depict the impact with high fidelity by closely following the laws of physics. Second, the visualization had to be eloq... View full abstract»

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  • Adaptive Geometry Image

    Publication Year: 2008, Page(s):948 - 960
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4193 KB) | HTML iconHTML

    We present a novel postprocessing utility called adaptive geometry image (AGIM) for global parameterization techniques that can embed a 3D surface onto a rectangular domain. This utility first converts a single rectangular parameterization into many different tessellations of square geometry images (GIMs) and then efficiently packs these GIMs into an image called AGIM. Therefore, undersampled regi... View full abstract»

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    Publication Year: 2008, Page(s): 961
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    Publication Year: 2008, Page(s): 962
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    Publication Year: 2008, Page(s): 964
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Aims & Scope

Visualization techniques and methodologies; visualization systems and software; volume visualization; flow visualization; multivariate visualization; modeling and surfaces; rendering; animation; user interfaces; visual progranuning; applications.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Leila De Floriani
Department of Computer Science, Bioengineering, Robotics and Systems Engineering
University of Genova
16146 Genova (Italy)
ldf4tvcg@umiacs.umd.edu