<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body bgcolor="#ffffff" text="#000000">
<font size="3">Hi,<br>
<br>
We
are building an artificial sky for an architecture school where we
teach, and before
starting we prepare a Radiance model, to simulate the interior of
the artificial sky. The idea is to help us to choose the right bulbs,
the ceiling, etc.<br>
<br>
To
simulate the overcast sky (Moon and Spencer) distribution in Radiance
we made walls of
mirror material and ceiling is filled with fluorescent tubes
(very close to one another) and covered with translucent material. Then
we tried to render few
images of interior, with several sets of rendering parameters, but
final images still aren't good enough with a lot of spots.<br>
<br>
Please see our results on <a
href="http://docs.google.com/Doc?id=dfvbdbg3_13f66n99kx">http://docs.google.com/Doc?id=dfvbdbg3_13f66n99kx</a><br>
<br>
Does anyone on the list have an experience with similar modelling,
where mirror objects are included? <br>
Why do we get strange spots on the floor even when ambient parameters
are really high?<br>
What combination of parameters may lead us to good image, for
acceptable rendering time?<br>
<br>
Thanks in advance,<br>
Ljubica, JeanDo, Marija </font>
</body>
</html>