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2009 IEEE Pacific Visualization Symposium

Date 20-23 April 2009

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Displaying Results 1 - 25 of 40
  • [Title page]

    Publication Year: 2009, Page(s): i
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  • [Copyright notice]

    Publication Year: 2009, Page(s): ii
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  • Contents

    Publication Year: 2009, Page(s):iii - iv
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  • Supporting organizations

    Publication Year: 2009, Page(s): v
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  • Preface

    Publication Year: 2009, Page(s): vi
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  • IEEE Computer Society Visualization & Graphics Technical Committee (VGTC)

    Publication Year: 2009, Page(s): vii
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  • Committee

    Publication Year: 2009, Page(s): viii
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  • list-reviewer

    Publication Year: 2009, Page(s): ix
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  • Keynote address Knots, maps, and tiles: Three visual puzzles

    Publication Year: 2009, Page(s): x
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1988 KB)

    Visualization aims at providing insight to its users. Now and then I am a user myself, and use visualization trying to solve a puzzle and to satisfy my curiosity. Simple questions turn out to be challenging problems, leading to a personal quest for their solution and resulting in intriguing images and animations. In my presentation I will present three such puzzles, all in the area of mathematical... View full abstract»

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  • Capstone address Introduction to processing and visualization of Chang'e-1 Lunar exploration data

    Publication Year: 2009, Page(s): xi
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  • [Blank page]

    Publication Year: 2009, Page(s): xii
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  • Visualizing time-varying features with TAC-based distance fields

    Publication Year: 2009, Page(s):1 - 8
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (9880 KB) | HTML iconHTML

    To analyze time-varying data sets, tracking features over time is often necessary to better understand the dynamic nature of the underlying physical process. Tracking 3D time-varying features, however, is non-trivial when the boundaries of the features cannot be easily defined. In this paper, we propose a new framework to visualize time-varying features and their motion without explicit feature se... View full abstract»

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  • Dual streamline seeding

    Publication Year: 2009, Page(s):9 - 16
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2994 KB) | HTML iconHTML

    This work introduces a novel streamline seeding technique based on dual streamlines that are orthogonal to the vector field, instead of tangential. The greedy algorithm presented here produces a net of orthogonal streamlines that is iteratively refined resulting in good domain coverage and a high degree of continuity and uniformity. The algorithm is easy to implement and efficient, and it naturall... View full abstract»

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  • Interactive feature extraction and tracking by utilizing region coherency

    Publication Year: 2009, Page(s):17 - 24
    Cited by:  Papers (14)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3482 KB) | HTML iconHTML

    The ability to extract and follow time-varying flow features in volume data generated from large-scale numerical simulations enables scientists to effectively see and validate modeled phenomena and processes. Extracted features often take much less storage space and computing resources to visualize. Most feature extraction and tracking methods first identify features of interest in each time step ... View full abstract»

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  • An organization topographic map for visualizing business hierarchical relationships

    Publication Year: 2009, Page(s):25 - 32
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (831 KB) | HTML iconHTML

    Visualization of the actual conditions of an organization is a very challenging issue. We propose a new system called a Business Microscope that senses the activities of people in an organization and provides visual feedback to users. We use name-tag shaped sensor nodes to measure face-to-face interaction between employees. The massive amount of data collected by the sensor-network terminal are si... View full abstract»

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  • Visualizing metrics on areas of interest in software architecture diagrams

    Publication Year: 2009, Page(s):33 - 40
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1600 KB) | HTML iconHTML

    We present a new method for the combined visualization of software architecture diagrams, such as UML class diagrams or component diagrams, and software metrics defined on groups of diagram elements. Our method extends an existing rendering technique for the so-called areas of interest in system architecture diagrams to visualize several metrics, possibly having missing values, defined on overlapp... View full abstract»

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  • HiMap: Adaptive visualization of large-scale online social networks

    Publication Year: 2009, Page(s):41 - 48
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (966 KB) | HTML iconHTML

    Visualizing large-scale online social network is a challenging yet essential task. This paper presents HiMap, a system that visualizes it by clustered graph via hierarchical grouping and summarization. HiMap employs a novel adaptive data loading technique to accurately control the visual density of each graph view, and along with the optimized layout algorithm and the two kinds of edge bundling me... View full abstract»

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  • Toward effective insight management in visual analytics systems

    Publication Year: 2009, Page(s):49 - 56
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (191 KB) | HTML iconHTML

    Although significant progress has been made toward effective insight discovery in visual sense making approaches, there is a lack of effective and efficient approaches to manage the large amounts of insights discovered. In this paper, we propose a systematic approach to leverage this problem around the concept of facts. Facts refer to patterns, relationships, or anomalies extracted from data under... View full abstract»

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  • Visual support for the understanding of simulation processes

    Publication Year: 2009, Page(s):57 - 64
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2683 KB) | HTML iconHTML

    Current visualization systems are typically based on the concept of interactive post-processing. This decoupling of data visualization from the process of data generation offers a flexible application of visualization tools. It can also lead, however, to information loss in the visualization. Therefore, a combination of the visualization of the data generating process with the visualization of the... View full abstract»

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  • Optimized data transfer for time-dependent, GPU-based glyphs

    Publication Year: 2009, Page(s):65 - 72
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1569 KB) | HTML iconHTML Multimedia Media

    Particle-based simulations are a popular tool for researchers in various sciences. In combination with the availability of ever larger COTS clusters and the consequently increasing number of simulated particles the resulting datasets pose a challenge for real-time visualization. Additionally the semantic density of the particles exceeds the possibilities of basic glyphs, like splats or spheres and... View full abstract»

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  • Out-of-core volume rendering for time-varying fields using a space-partitioning time (SPT) tree

    Publication Year: 2009, Page(s):73 - 80
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (627 KB) | HTML iconHTML Multimedia Media

    In this paper, we propose a novel out-of-core volume rendering algorithm for large time-varying fields. Exploring temporal and spatial coherences has been an important direction for speeding up the rendering of time-varying data. Previously, there were techniques that hierarchically partition both the time and space domains into a data structure so as to re-use some results from the previous time ... View full abstract»

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  • Point-based tree representation: A new approach for large hierarchies

    Publication Year: 2009, Page(s):81 - 88
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4017 KB) | HTML iconHTML Multimedia Media

    Space-filling layout techniques for tree representations are frequently used when the available screen space is small or the data set is large. In this paper, we propose a new approach to space-filling tree representations, which uses mechanisms from the point-based rendering paradigm. Additionally, helpful interaction techniques that tie in with our layout are presented. We will relate our new te... View full abstract»

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  • A visual canonical adjacency matrix for graphs

    Publication Year: 2009, Page(s):89 - 96
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1258 KB) | HTML iconHTML

    Graph data mining algorithms rely on graph canonical forms to compare different graph structures. These canonical form definitions depend on node and edge labels. In this paper, we introduce a unique canonical visual matrix representation that only depends on a graph's topological information, so that two structurally identical graphs will have exactly the same visual adjacency matrix representati... View full abstract»

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  • Evaluation of symbol contrast in scatterplots

    Publication Year: 2009, Page(s):97 - 104
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1033 KB) | HTML iconHTML

    Symbols are frequently used to represent data objects in visualization. An appropriate contrast between symbols is a precondition that determines the efficiency of a visual analysis process. We study the contrast between different types of symbols in the context of scatterplots, based on user testing and a quantitative model for symbol contrast. In total, 32 different symbols were generated by usi... View full abstract»

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  • A self-adaptive treemap-based technique for visualizing hierarchical data in 3D

    Publication Year: 2009, Page(s):105 - 112
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1068 KB) | HTML iconHTML Multimedia Media

    In this paper, we present a novel adaptive visualization technique where the constituting polygons dynamically change their geometry and other visual attributes depending on user interaction. These changes take place with the objective of conveying required level of detail to the user through each view. Our proposed technique is successfully applied to build a treemap-based but 3D visualization of... View full abstract»

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