Thanks and materials..

radiance-general
1

Yes!! Really thank you Greg and Axel !!!

Then, I would like to ask a question.

I'm in need of representing in Radiance a shiny peinture. And I've no idea on how to measure or where to collect appropriate values for specularity and roughness.

Does exist any library? The libraries I know have only lambertian peintures.

How could those values be calculated? Or, better: how could them be estimated? What I need to do is to choose reasonable values and justify them in my thesis.. Any suggestion?

Thank you in advance!

Lucio

.. Caminante no hay
camino, solo se hace
camino al andar ..

          --- o
meglio ---

.. Caminante el
destino no es al
final de el viaje,
pero en todo el
andar ..

2

Hi Lucio,

I'm sure there are better, newer references out there, but here's a place to start:

  http://radsite.lbl.gov/radiance/refer/sg96crs.pdf

A quick google search of the terms "radiance materials library" led to some online material from my old friend Kevin Matthews:

  http://www.designlaboratory.com/computing/tools/radiance/radmatlib.html

There are some dependencies on some .cal files, which you may have to find elsewhere. I know we worked on something like this at the LESO/EPFL, but I don't know what became of it. I don't think much was done with collecting specular materials. You can find almost anything you like out there in the big wide world, so a library will never be more than a random sample.

Best,
-Greg

···

From: "loscotec\@libero\.it" <[email protected]>
Date: March 18, 2008 2:35:55 PM PDT

Yes!! Really thank you Greg and Axel !!!

Then, I would like to ask a question.

I'm in need of representing in Radiance a shiny peinture. And I've no idea on how to measure or where to collect appropriate values for specularity and roughness.

Does exist any library? The libraries I know have only lambertian peintures.

How could those values be calculated? Or, better: how could them be estimated? What I need to do is to choose reasonable values and justify them in my thesis.. Any suggestion?

Thank you in advance!

Lucio

3

I have looked for years to find those cal files. I believe I emailed Arifice and/or Kevin directly many years ago for "dusty.cal", to no avail. Anyone who has or obtains these cal files that's willing to share, I'll buy you a beer.

- Rob

···

On Mar 21, 2008, at 5:42 PM, Greg Ward wrote:

A quick google search of the terms "radiance materials library" led to some online material from my old friend Kevin Matthews:

  http://www.designlaboratory.com/computing/tools/radiance/radmatlib.html

There are some dependencies on some .cal files, which you may have to find elsewhere.