Time-varying contour topologyopen access
- Authors
- Sohn, B.-S.; Chandrajit, B.
- Issue Date
- Jan-2006
- Keywords
- Contour tree; Data visualization; Graph theory; Interactive user interface; Isosurface extraction; Time-varying contour topology
- Citation
- IEEE Transactions on Visualization and Computer Graphics, v.12, no.1, pp 14 - 25
- Pages
- 12
- Journal Title
- IEEE Transactions on Visualization and Computer Graphics
- Volume
- 12
- Number
- 1
- Start Page
- 14
- End Page
- 25
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/60810
- DOI
- 10.1109/TVCG.2006.16
- ISSN
- 1077-2626
1941-0506
- Abstract
- The contour tree has been used to compute the topology of isosurfaces, generate a minimal seed set for accelerated isosurface extraction, and provide a user interface to segment individual contour components in a scalar field. In this paper, we extend the benefits of the contour tree to time-varying data visualization. We define temporal correspondence of contour components and describe an algorithm to compute the correspondence information in time-dependent contour trees. A graph representing the topology changes of time-varying isosurfaces is constructed in real-time for any selected isovalue using the precomputed correspondence information. Quantitative properties, such as surface area and volume of contour components, are computed and labeled on the graph. This topology change graph helps users to detect significant topological and geometric changes in time-varying isosurfaces. The graph is also used as an interactive user interface to segment, track, and visualize the evolution of any selected contour components over time.
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- Appears in
Collections - College of Software > School of Computer Science and Engineering > 1. Journal Articles
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