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dc.contributor.authorLintu, Andreien_US
dc.contributor.authorLensch, Hendrik P. A.en_US
dc.contributor.authorMagnor, Marcusen_US
dc.contributor.authorEl-Abed, Saschaen_US
dc.contributor.authorSeidel, Hans-Peteren_US
dc.contributor.editorH.-C. Hege and R. Machiraju and T. Moeller and M. Srameken_US
dc.date.accessioned2014-01-29T17:53:53Z
dc.date.available2014-01-29T17:53:53Z
dc.date.issued2007en_US
dc.identifier.isbn978-3-905674-03-3en_US
dc.identifier.issn1727-8376en_US
dc.identifier.urihttp://dx.doi.org/10.2312/VG/VG07/009-016en_US
dc.description.abstractThis 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.en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectCategories and Subject Descriptors (according to ACM CCS): I.4.10 [Image Processing and Computer Vision]: Image Representation - Volumetric I.3.8 [Computer Graphics]: Applications J.2 [Computer Applications]: Physical Sciences and Engineering - Astronomyen_US
dc.title3D Reconstruction of Emission and Absorption in Planetary Nebulaeen_US
dc.description.seriesinformationEurographics/IEEE VGTC Symposium on Volume Graphicsen_US


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