Constrained inverse volume rendering for planetary nebulae

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Publication Type Journal Article
School or College College of Engineering
Department Computing, School of
Creator Hansen, Charles D.
Other Author Magnor, Marcus; Kindlmann, Gordon; Duric, Neb
Title Constrained inverse volume rendering for planetary nebulae
Date 2004
Description Determining the three-dimensional structure of distant astronomical objects is a challenging task, given that terrestrial observations provide only one viewpoint. For this task, bipolar planetary nebulae are interesting objects of study because of their pronounced axial symmetry due to fundamental physical processes. Making use of this symmetry constraint, we present a technique to automatically recover the asymmetric structure of bipolar planetary nebulae from two-dimensional images. With GPU-based volume rendering driving a non-linear optimization, we estimate the nebula's local emission density as a function of its radial and axial coordinates, and we recover the orientation of the nebula relative to Earth. The optimization refines the nebula model and its orientation by minimizing the differences between the rendered image and the original astronomical image. The resulting model enables realistic 3D visualizations of planetary nebulae, e.g. for educational purposes in planetarium shows. In addition, the recovered spatial distribution of the emissive gas allows validating computer simulation results of the astrophysical formation processes of planetary nebulae.
Type Text
Publisher Institute of Electrical and Electronics Engineers (IEEE)
Journal Title IEEE Visualization
First Page 83
Last Page 90
Subject Volume rendering; Axial symmetry
Subject LCSH Planetary nebulae; Visualization; Computer graphics; Rendering (Computer graphics)
Language eng
Bibliographic Citation Magnor, M., Kindlmann, G., Hansen, C. D. & Duric, N. (2004). Constrained inverse volume rendering for planetary nebulae. IEEE Visualization, 83-90.
Rights Management (c)2004 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Format Medium application/pdf
Format Extent 837,381 bytes
Identifier ir-main,14633
ARK ark:/87278/s6mg86mh
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2012-06-13
ID 702667
Reference URL https://collections.lib.utah.edu/ark:/87278/s6mg86mh
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