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2013 IEEE Pacific Visualization Symposium (PacificVis)

Feb. 27 2013-March 1 2013

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Displaying Results 1 - 25 of 45
  • [Title page]

    Publication Year: 2013, Page(s): i
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  • [Blank page]

    Publication Year: 2013, Page(s): ii
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  • Contents

    Publication Year: 2013, Page(s):iii - v
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  • Message from the Program Chairs

    Publication Year: 2013, Page(s): vi
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  • IEEE visualization and graphics technical committee (VGTC)

    Publication Year: 2013, Page(s): vii
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  • Committee

    Publication Year: 2013, Page(s): viii
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  • Paper reviewers

    Publication Year: 2013, Page(s): ix
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  • Keynote speaker: Graph animation

    Publication Year: 2013, Page(s): x
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (51 KB)

    Summary form only given. In several applications there is the need of visualizing a graph whose structure evolves over time. A few examples: in the networking field it is often necessary to show how the flow of packets changes according to network modifications; in the Internet Domain Name System it is useful to study the evolution of the relationship between name servers sending queries and name ... View full abstract»

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  • Keynote speaker: Big data: A scientific visualization perspective

    Publication Year: 2013, Page(s): xi
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (123 KB)

    Summary form only given. Modern high performance computers have speeds measured in petaflops and handle data set sizes measured in terabytes and petabytes. In the next decade (or less) we will see exascale computational resources. Although these machines offer enormous potential for solving very large-scale realistic computational problems, their effectiveness will hinge upon the ability of human ... View full abstract»

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  • [Blank page]

    Publication Year: 2013, Page(s): xii
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  • Circular-arc cartograms

    Publication Year: 2013, Page(s):1 - 8
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (802 KB) | HTML iconHTML Multimedia Media

    We present a new circular-arc cartogram model in which countries are drawn as polygons with circular arcs instead of straight-line segments. Given a political map and values associated with each country in the map, a cartogram is a distorted map in which the areas of the countries are proportional to the corresponding values. In the circular-arc cartogram model straight-line segments can be replac... View full abstract»

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  • Exploring entities in text with descriptive non-photorealistic rendering

    Publication Year: 2013, Page(s):9 - 16
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3770 KB) | HTML iconHTML Multimedia Media

    We present a novel approach to text visualization called descriptive non-photorealistic rendering which exploits the inherent spatial and abstract dimensions in text documents to integrate 3D non-photorealistic rendering with information visualization. The visualization encodes text data onto 3D models, emphasizing the relative significance of words in the text and the physical, real-world relatio... View full abstract»

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  • Constrained optimization for disoccluding geographic landmarks in 3D urban maps

    Publication Year: 2013, Page(s):17 - 24
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (11981 KB) | HTML iconHTML Multimedia Media

    In composing hand-drawn 3D urban maps, the most common design problem is to avoid overlaps between geographic features such as roads and buildings by displacing them consistently over the map domain. Nonetheless, automating this map design process is still a challenging task because we have to maximally retain the 3D depth perception inherent in pairs of parallel lines embedded in the original lay... View full abstract»

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  • Improved grid map layout by point set matching

    Publication Year: 2013, Page(s):25 - 32
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB) | HTML iconHTML

    Associating the regions of a geographic subdivision with the cells of a grid is a basic operation that is used in various types of maps, like spatially ordered treemaps and OD maps. In these cases the regular shapes of the grid cells allows easy representation of extra information about the regions. The main challenge is to find an association that allows a user to find a region in the grid quickl... View full abstract»

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  • Reordering Massive Sequence Views: Enabling temporal and structural analysis of dynamic networks

    Publication Year: 2013, Page(s):33 - 40
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (16228 KB) | HTML iconHTML

    Networks are present in many fields such as finance, sociology, and transportation. Often these networks are dynamic: they have a structural as well as a temporal aspect. We present a technique that extends the Massive Sequence View (MSV) for the analysis of the temporal and structural aspects of dynamic networks. Using features in the data as well as in the visualization based on the Gestalt prin... View full abstract»

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  • Smooth bundling of large streaming and sequence graphs

    Publication Year: 2013, Page(s):41 - 48
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (11346 KB) | HTML iconHTML Multimedia Media

    Dynamic graphs are increasingly pervasive in modern information systems. However, understanding how a graph changes in time is difficult. We present here two techniques for simplified visualization of dynamic graphs using edge bundles. The first technique uses a recent image-based graph bundling method to create smoothly changing bundles from streaming graphs. The second technique incorporates add... View full abstract»

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  • GraphCharter: Combining browsing with query to explore large semantic graphs

    Publication Year: 2013, Page(s):49 - 56
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1217 KB) | HTML iconHTML

    Large scale semantic graphs such as social networks and knowledge graphs contain rich and useful information. However, due to combined challenges in scale, density, and heterogeneity, it is impractical for users to answer many interesting questions by visual inspection alone. This is because even a semantically simple question, such as which of my extended friends are also fans of my favorite band... View full abstract»

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  • Visual summaries for graph collections

    Publication Year: 2013, Page(s):57 - 64
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1102 KB) | HTML iconHTML Multimedia Media

    Graphs can be used to represent a variety of information, from molecular structures to biological pathways to computational workflows. With a growing volume of data represented as graphs, the problem of understanding and analyzing the variations in a collection of graphs is of increasing importance. We present an algorithm to compute a single summary graph that efficiently encodes an entire collec... View full abstract»

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  • Local WYSIWYG volume visualization

    Publication Year: 2013, Page(s):65 - 72
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (16767 KB) | HTML iconHTML Multimedia Media

    In this paper, we propose a novel volume visualization system enabling local transfer function specification through direct painting or sketching on the rendered image, in a WYSIWYG style. Localized transfer functions are defined on scalar topology regions specified by the user. Intelligent and fast feature inference algorithms have been developed to convert user's input to the region specificatio... View full abstract»

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  • Transfer function design based on user selected samples for intuitive multivariate volume exploration

    Publication Year: 2013, Page(s):73 - 80
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5722 KB) | HTML iconHTML Multimedia Media

    Multivariate volumetric datasets are important to both science and medicine. We propose a transfer function (TF) design approach based on user selected samples in the spatial domain to make multivariate volumetric data visualization more accessible for domain users. Specifically, the user starts the visualization by probing features of interest on slices and the data values are instantly queried b... View full abstract»

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  • Evaluation of Depth of Field for depth perception in DVR

    Publication Year: 2013, Page(s):81 - 88
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (10612 KB) | HTML iconHTML Multimedia Media

    In this paper we present a user study on the use of Depth of Field for depth perception in Direct Volume Rendering. Direct Volume Rendering with Phong shading and perspective projection is used as the baseline. Depth of Field is then added to see its impact on the correct perception of ordinal depth. Accuracy and response time are used as the metrics to evaluate the usefulness of Depth of Field. T... View full abstract»

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  • Transformations for volumetric range distribution queries

    Publication Year: 2013, Page(s):89 - 96
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (834 KB) | HTML iconHTML

    Volumetric datasets continue to grow in size, and there is continued demand for interactive analysis on these datasets. Because storage device throughputs are not increasing as quickly, interactive analysis workflows are becoming working set-constrained. In an ideal workflow, the working set complexity of the interactive analysis portion of the workflow should depend primarily on the size of the a... View full abstract»

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  • Guiding Deep Brain Stimulation interventions by fusing multimodal uncertainty regions

    Publication Year: 2013, Page(s):97 - 104
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (10637 KB) | HTML iconHTML Multimedia Media

    Deep Brain Stimulation (DBS) is a surgical intervention that is known to reduce or eliminate the symptoms of common movement disorders, such as Parkinson's disease, dystonia, or tremor. During the intervention the surgeon places electrodes inside of the patient's brain to stimulate specific regions. Since these regions span only a couple of millimeters, and electrode misplacement has severe conseq... View full abstract»

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  • Discovering and visualizing patterns in EEG data

    Publication Year: 2013, Page(s):105 - 112
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (10975 KB) | HTML iconHTML

    Brain activity data is often collected through the use of electroencephalography (EEG). In this data acquisition modality, the electric fields generated by neurons are measured at the scalp. Although this technology is capable of measuring activity from a group of neurons, recent efforts provide evidence that these small neuronal collections communicate with other, distant assemblies in the brain'... View full abstract»

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  • A topologically-enhanced juxtaposition tool for hybrid wind tunnel

    Publication Year: 2013, Page(s):113 - 120
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1742 KB) | HTML iconHTML Multimedia Media

    We have developed a hybrid wind tunnel, where 2D measurement-integrated (MI) simulation, which utilizes actual data acquired from real air flow behind a square cylinder, plays an important role in improving the accuracy of the numerical analysis. The wind tunnel requires an accompanying visual analysis tool with which we can effectively peer into the relationships between the actual and simulated ... View full abstract»

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