Entry Christensen:1999:FPM from jgraphtools.bib
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BibTeX entry
@Article{Christensen:1999:FPM,
author = "Per H. Christensen",
title = "Faster Photon Map Global Illumination",
journal = j-J-GRAPHICS-TOOLS,
volume = "4",
number = "3",
pages = "1--10",
year = "1999",
CODEN = "JGTOFD",
ISSN = "1086-7651",
ISSN-L = "1086-7651",
bibdate = "Thu Oct 12 17:08:13 2000",
bibsource = "http://www.acm.org/jgt/issues.html;
http://www.math.utah.edu/pub/tex/bib/jgraphtools.bib",
URL = "http://www.acm.org/jgt/papers/Christensen99/",
abstract = "The photon map method is an extension of ray tracing
that makes it able to efficiently compute caustics and
soft indirect illumination on surfaces and in
participating media. This paper describes a method to
further speed up the computation of soft indirect
illumination (diffuse-diffuse light transport such as
color bleeding) on surfaces. The speed-up is based on
the observation that the many look-ups in the global
photon map during final gathering can be simplified by
precomputing local irradiance values at the photon
positions. Our tests indicate that the calculation of
soft indirect illumination during rendering, which is
the most time-consuming part, can be sped up by a
factor of 5--7 in typical scenes at the expense of (1)
a precomputation that takes about 2\%--5\% of the time
saved during rendering and (2) a 28\% increase of
memory use.",
acknowledgement = ack-nhfb,
journal-URL = "http://www.tandfonline.com/loi/ujgt20",
}
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