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BRDF data sets
Posted: Tue Jun 24, 2008 7:41 pm
by TerraMatrix
Don't know if this would be of use to anyone, but here are a couple sites with BRDF data in different formats.
http://www.graphics.cornell.edu/online/ ... index.html
http://www1.cs.columbia.edu/CAVE//software/curet/
I'm sure brdf is doable in Indigo, but as to how you can take these sources and get them to work... I haven't tried yet. I'm still a few Indigo versions behind, anyway. Anyone have an answer?
Posted: Wed Jun 25, 2008 1:18 am
by pixie
It would be very interesting being able to use this values, a bit like we presently do regarding camera response functions
Posted: Wed Jun 25, 2008 4:57 am
by Kram1032
Hum, I didn't have a very close look, but as I saw it 'till now, it's not like tabulated spectrum but more like a mix of nk and IES data... (angle-based...)
I'm not sure if that's convertible but it looks nice
Posted: Wed Jun 25, 2008 8:14 am
by OnoSendai
Measured BRDFs would be nice, but I don't think those sources are very good measurements.
Posted: Wed Jun 25, 2008 6:35 pm
by TerraMatrix
I see, I'd assumed there was an established file format for profiles. Now I see that's not the case.
Does anyone know if this is something that absolutely must be done with precise instruments and exactly controlled conditions? Or could someone with the time and the technical skill build a scanner themselves? (of course if you hace unlimited funds you can pretty much do anything), but maybe a few thousand in this instance?
So far I've only found this to be of much help:
http://www.cs.princeton.edu/~smr/cs348c ... paper.html
Written over 10 years ago. I didn't even know they were doing this that long ago!