[Radiance-general] findglare: warning -- missing 1% of samples

[Jan Wienold]

findglare cannot resolve the sun in that image, not sure how to overcome 
this. increasing -r doesn't help.

why are you evaluating such a scene with UGR? UGR doesn't make sense for 
very small glare sources and also not for daylight situations.

As far as I know, for exterior spaces no established glare rating exist.

You could use evalglare (version 12) instead and look for the CIE 
veiling glare index (-d option, last index printed), gives you the 
veiling luminance in the eye according to the cie disability glare 
equation. This option is pretty new in evalglare, so if you use it, pls 
check it against hand calculation and report any problem... I checked it 
only quickly when implementing.
I also wouldn't use DGP for exterior spaces.

good luck

Jan


Am 10/30/14, 5:04 PM, schrieb Joe Smith:
> Dear all, I got a warning when using findglare to process a hdr image 
> file:
>
> *findglare: warning -- missing 1% of samples*
>
> And the ugr value produced by glarendx using the .glr file generated 
> in the previous step is zero.
>
> May I ask why the hdr image, which looks fine in Photomatix, is 
> causing findglare error?
>
> The HDR image is shared in the following link:
> https://drive.google.com/file/d/0B_FMUh4Urmx4dzZoYVNkSEVzNzQ/view?usp=sharing
>
> Thanks!
> Joe
>
>
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-- 
Dr.-Ing.  Jan Wienold
Ecole Polytechnique Fédérale de Lausanne (EPFL)
EPFL ENAC IA LIPID

http://people.epfl.ch/jan.wienold
LE 1 113 (Office)
Phone    +41 21 69 38041

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