[Radiance-general] gensky -u not uniform?

[Jan Wienold]

Hi Greg,

I tried to generate a hemisphere with a completely uniform luminance 
distribution and wanted to use gensky for this, since it offers the 
option -u (uniform sky). But it turns out that the distribution is not 
uniform.
Am I doing something wrong?

gensky 6 12 21  -b 55.86592178771 -u

Gives a zenith-luminance of 10000 cd/m2 (was the goal) and close to the 
horizon around 6500 cd/m2.
Also without the -b option the distribution is not uniform.
Any idea?

Thx!
Jan


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Dr.-Ing.  Jan Wienold
Ecole Polytechnique Fédérale de Lausanne (EPFL)
EPFL ENAC IA LIPID

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