Title: Interactive volume rendering aurora on the GPU
Authors: Lawlor, Orion Sky
Genetti, Joe
Citation: Journal of WSCG. 2011, vol. 19, no. 1-3, p. 25-32.
Issue Date: 2011
Publisher: Václav Skala - UNION Agency
Document type: článek
URI: http://wscg.zcu.cz/WSCG2011/!_2011_J_WSCG_1-3.pdf
ISSN: 1213–6972 (hardcopy)
1213–6980 (CD-ROM)
1213–6964 (on-line)
Keywords: objemové vykreslování;polární záře;atmosférický rozptyl
Keywords in different language: volume rendering;aurora borealis;atmospheric scattering
Abstract: We present a combination of techniques to render the aurora borealis in real time on a modern graphics processing unit (GPU). Unlike the general 3D volume rendering problem, an auroral display is emissive and can be factored into a height-dependent energy deposition function, and a 2D electron flux map. We also present a GPU-friendly atmosphere model, which includes an integrable analytic approximation of the atmosphere’s density along a ray. Together, these techniques enable a modern consumer graphics card to realistically render the aurora at 20–80fps, from any point of view either inside or outside the atmosphere.
Rights: © Václav Skala - UNION Agency
Appears in Collections:Number 1-3 (2011)

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