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Generation of Accurate Integral Surfaces in Time-Dependent Vector Fields

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5 Author(s)
Garth, C. ; Inst. of Data Anal. & Visualization, Univ. of California, Davis, CA ; Krishnan, H. ; Tricoche, X. ; Tricoche, X.
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We present a novel approach for the direct computation of integral surfaces in time-dependent vector fields. As opposed to previous work, which we analyze in detail, our approach is based on a separation of integral surface computation into two stages: surface approximation and generation of a graphical representation. This allows us to overcome several limitations of existing techniques. We first describe an algorithm for surface integration that approximates a series of time lines using iterative refinement and computes a skeleton of the integral surface. In a second step, we generate a well-conditioned triangulation. Our approach allows a highly accurate treatment of very large time-varying vector fields in an efficient, streaming fashion. We examine the properties of the presented methods on several example datasets and perform a numerical study of its correctness and accuracy. Finally, we investigate some visualization aspects of integral surfaces.

Published in:

Visualization and Computer Graphics, IEEE Transactions on  (Volume:14 ,  Issue: 6 )

Date of Publication:

Nov.-Dec. 2008

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