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  3D Reconstruction of Emission and Absorption in Planetary Nebulae

Lintu, A., Lensch, H. P. A., Magnor, M., El-Abed, S., & Seidel, H.-P. (2007). 3D Reconstruction of Emission and Absorption in Planetary Nebulae. In D. Fellner, T. Möller, & S. Fraser (Eds.), Volume Graphics 2007: Eurographics / IEEE VGTC Symposium Proceedings Sixth International Symposium on Volume Graphics (pp. 9-16). Aire-la-Ville, Switzerland: Eurographics Association.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-1DCB-1 Version Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-1DCC-0
Genre: Conference Paper

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 Creators:
Lintu, Andrei1, 2, Author           
Lensch, Hendrik P. A.1, Author           
Magnor, Marcus2, Author           
El-Abed, Sasha3, Author
Seidel, Hans-Peter1, Author           
Affiliations:
1Computer Graphics, MPI for Informatics, Max Planck Society, ou_40047              
2Graphics - Optics - Vision, MPI for Informatics, Max Planck Society, ou_1116549              
3Max Planck Society, ou_persistent13              

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 Abstract: This paper addresses the problem of reconstructing the 3D structure of planetary nebulae from 2D observations. Assuming axial symmetry, our method jointly reconstructs the distribution of dust and ionized gas in the nebulae from observations at two different wavelengths. In an inverse rendering framework we optimize for the emission and absorption densities which are correlated to the gas and dust distribution present in the nebulae. First, the density distribution of the dust component is estimated based on an infrared image, which traces only the dust distribution due to its intrinsic temperature. In a second step, we optimize for the gas distribution by comparing the rendering of the nebula to the visible wavelength image. During this step, besides the emission of the ionized gas, we further include the effect of absorption and scattering due to the already estimated dust distribution. Using the same approach, we can as well start with a radio image from which the gas distribution is derived without absorption, then deriving the dust distribution from the visible wavelength image considering absorption and scattering. The intermediate steps and the final reconstruction results are visualized at real-time frame rates using a volume renderer. Using our method we recover both gas and dust density distributions present in the nebula by exploiting the distinct absorption or emission parameters at different wavelengths.

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Language(s): eng - English
 Dates: 2008-03-142007
 Publication Status: Issued
 Pages: -
 Publishing info: Aire-la-Ville, Switzerland : Eurographics Association
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 356503
DOI: 10.2312/VG/VG07/009-016
Other: Local-ID: C12573CC004A8E26-8973100E612AA1D7C12573C9003C026F-Lintu:2007:REA
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Title: Untitled Event
Place of Event: Prague, Czech Republic
Start-/End Date: 2007-09-03 - 2007-09-04

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Title: Volume Graphics 2007 : Eurographics / IEEE VGTC Symposium Proceedings Sixth International Symposium on Volume Graphics
Source Genre: Proceedings
 Creator(s):
Fellner, Dieter, Editor
Möller, Torsten, Editor
Fraser, Simon, Editor
Affiliations:
-
Publ. Info: Aire-la-Ville, Switzerland : Eurographics Association
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 9 - 16 Identifier: ISBN: 978-1-56881-367-7