Ambient Occlusion Effects for Combined Volumes and Tubular Geometry

M. Schott; T. Martin; A. V. P. Grosset; S. T. Smith; C. D. Hansen

doi:10.1109/TVCG.2012.306

Ambient Occlusion Effects for Combined Volumes and Tubular Geometry

M. Schott, T. Martin, A. V. P. Grosset, S. T. Smith, C. D. Hansen

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

This paper details a method for interactive direct volume rendering that computes ambient occlusion effects for visualizations that combine both volumetric and geometric primitives, specifically tube-shaped geometric objects representing streamlines, magnetic field lines or DTI fiber tracts. The algorithm extends the recently presented the directional occlusion shading model to allow the rendering of those geometric shapes in combination with a context providing 3D volume, considering mutual occlusion between structures represented by a volume or geometry. Stream tube geometries are computed using an effective spline-based interpolation and approximation scheme that avoids self-intersection and maintains coherent orientation of the stream tube segments to avoid surface deforming twists. Furthermore, strategies to reduce the geometric and specular aliasing of the stream tubes are discussed.

Original language	English (US)
Pages (from-to)	913-926
Number of pages	14
Journal	IEEE Transactions on Visualization and Computer Graphics
Volume	19
Issue number	6
DOIs	https://doi.org/10.1109/TVCG.2012.306
State	Published - Jun 2013
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This research was sponsored by the National Nuclear Security Administration under the Advanced Simulation and Computing program through US Department of Energy (DOE) Cooperative Agreement #DE-NA0000740, and by Award No. KUS-C1-016-04, made by King Abdullah University of Science and Technology (KAUST), and DOE SciDAC-2:SDAV, US National Science Foundation (NSF) OCI-0906379.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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10.1109/TVCG.2012.306

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@article{a4735a88304a4120a14143d974566483,

title = "Ambient Occlusion Effects for Combined Volumes and Tubular Geometry",

abstract = "This paper details a method for interactive direct volume rendering that computes ambient occlusion effects for visualizations that combine both volumetric and geometric primitives, specifically tube-shaped geometric objects representing streamlines, magnetic field lines or DTI fiber tracts. The algorithm extends the recently presented the directional occlusion shading model to allow the rendering of those geometric shapes in combination with a context providing 3D volume, considering mutual occlusion between structures represented by a volume or geometry. Stream tube geometries are computed using an effective spline-based interpolation and approximation scheme that avoids self-intersection and maintains coherent orientation of the stream tube segments to avoid surface deforming twists. Furthermore, strategies to reduce the geometric and specular aliasing of the stream tubes are discussed.",

author = "M. Schott and T. Martin and Grosset, {A. V. P.} and Smith, {S. T.} and Hansen, {C. D.}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This research was sponsored by the National Nuclear Security Administration under the Advanced Simulation and Computing program through US Department of Energy (DOE) Cooperative Agreement #DE-NA0000740, and by Award No. KUS-C1-016-04, made by King Abdullah University of Science and Technology (KAUST), and DOE SciDAC-2:SDAV, US National Science Foundation (NSF) OCI-0906379. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2013",

month = jun,

doi = "10.1109/TVCG.2012.306",

language = "English (US)",

volume = "19",

pages = "913--926",

journal = "IEEE Transactions on Visualization and Computer Graphics",

issn = "1077-2626",

publisher = "Institute of Electrical and Electronics Engineers",

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AU - Schott, M.

AU - Martin, T.

AU - Grosset, A. V. P.

AU - Smith, S. T.

AU - Hansen, C. D.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: This research was sponsored by the National Nuclear Security Administration under the Advanced Simulation and Computing program through US Department of Energy (DOE) Cooperative Agreement #DE-NA0000740, and by Award No. KUS-C1-016-04, made by King Abdullah University of Science and Technology (KAUST), and DOE SciDAC-2:SDAV, US National Science Foundation (NSF) OCI-0906379. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2013/6

Y1 - 2013/6

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AB - This paper details a method for interactive direct volume rendering that computes ambient occlusion effects for visualizations that combine both volumetric and geometric primitives, specifically tube-shaped geometric objects representing streamlines, magnetic field lines or DTI fiber tracts. The algorithm extends the recently presented the directional occlusion shading model to allow the rendering of those geometric shapes in combination with a context providing 3D volume, considering mutual occlusion between structures represented by a volume or geometry. Stream tube geometries are computed using an effective spline-based interpolation and approximation scheme that avoids self-intersection and maintains coherent orientation of the stream tube segments to avoid surface deforming twists. Furthermore, strategies to reduce the geometric and specular aliasing of the stream tubes are discussed.

UR - http://hdl.handle.net/10754/597495

UR - http://ieeexplore.ieee.org/document/6361390/

UR - http://www.scopus.com/inward/record.url?scp=84876158244&partnerID=8YFLogxK

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DO - 10.1109/TVCG.2012.306

M3 - Article

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SP - 913

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JO - IEEE Transactions on Visualization and Computer Graphics

JF - IEEE Transactions on Visualization and Computer Graphics

IS - 6

ER -

Ambient Occlusion Effects for Combined Volumes and Tubular Geometry

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