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Author, Editor(s)

Author(s):

Haber, Jörg
Magnor, Marcus
Seidel, Hans-Peter

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BibTeX cite key*:

Haber:PBSTP

Title

Title*:

Physically based Simulation of Twilight Phenomena

Journal

Journal Title*:

Transactions on Graphics

Journal's URL:

http://www.acm.org/tog/

Download URL
for the article:

http://portal.acm.org/citation.cfm?id=1095878.1095884

Language:

English

Publisher

Publisher's
Name:

ACM

Publisher's URL:

http://www.acm.org/

Publisher's
Address:

New York, USA

ISSN:

0730-0301

Vol, No, pp, Date

Volume*:

24

Number:

4

Publishing Date:

October 2005

Pages*:

1353-1373

Number of
VG Pages:

49

Page Start:


Page End:


Sequence Number:


DOI:


Note, Abstract, ©

Note:


(LaTeX) Abstract:

We present a physically based approach to compute the colors of the sky during the twilight period before sunrise and after sunset. The simulation is based on the theory of light scattering by small particles. A realistic atmosphere model is assumed, consisting of air molecules, aerosols, and water. Air density, aerosols, and relative humidity vary with altitude. In addition, the aerosol component varies in composition and particle size distribution. This allows us to realistically simulate twilight phenomena for a wide range of different climate conditions. Besides considering multiple Rayleigh and Mie scattering, we take into account wavelength-dependent refraction of direct sunlight as well as the shadow of the Earth. Incorporating several optimizations into the radiative transfer simulation, a photo-realistic hemispherical twilight sky is computed in less than two hours on a conventional PC. The resulting radiometric data is useful, for instance, for high-dynamic range environment mapping, outdoor global illumination calculations, mesopic vision research and optical aerosol load probing.

URL for the Abstract:


Categories,
Keywords:

physics-based sky model, twilight phenomena, refraction, multiple scattering, 3D radiative transfer equation

HyperLinks / References / URLs:


Copyright Message:


Personal Comments:


Download
Access Level:

Intranet

Correlation

MPG Unit:

Max-Planck-Institut für Informatik



MPG Subunit:

Computer Graphics Group

Appearance:

MPII WWW Server, MPII FTP Server, MPG publications list, university publications list, working group publication list, Fachbeirat, VG Wort


BibTeX Entry:

@ARTICLE{Haber:PBSTP,
AUTHOR = {Haber, J{\"o}rg and Magnor, Marcus and Seidel, Hans-Peter},
TITLE = {Physically based Simulation of Twilight Phenomena},
JOURNAL = {Transactions on Graphics},
PUBLISHER = {ACM},
YEAR = {2005},
NUMBER = {4},
VOLUME = {24},
PAGES = {1353--1373},
ADDRESS = {New York, USA},
MONTH = {October},
ISBN = {0730-0301},
}


Entry last modified by Christine Kiesel, 01/30/2006
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Editor(s)
Jörg Haber
Created
07/21/2005 11:20:59 AM
Revisions
3.
2.
1.
0.
Editor(s)
Christine Kiesel
Christine Kiesel
Jörg Haber
Jörg Haber
Edit Dates
30.01.2006 11:54:31
12.01.2006 13:37:55
01/03/2006 10:42:42 AM
07/21/2005 11:20:59 AM