When was the BSDF introduced into Radiance?

radiance-general
1

Dear all,

In earlier versions, there was no BSDF material implemented in Radiance, and I want to know when BSDF was introduced in Radiance. Are there any references or literature available on this topic？

Additionally, I know that the Klems BSDF was proposed by Klems in 1993, but I can’t find any literature regarding the tensor tree BSDF. Which literature discusses the proposal of the tensor tree BSDF?

Best,

Yongqing

2

Dear Yongqing,

as far as I know, the first presentation about using BSDF data was at the 2007 Workshop. The first application of BTDFs in Radiance was used together with mkillum, i.e. modifying the generated distribution.

In 2009 BSDFs were intruduced as part of the 3-phase method:

Finally, in 2011, BSDFs have been implemented as material in Radiance:

And also the variable resolution approach was presented there:

There is also a paper available from the 2014 Eurographics Workshop on Material Appearance Modeling, where the workflow measurement - interpolation - tensor tree BSDF is described:

I am sure, Greg has even more infos to share.

Best regards,
David

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3

Thank you, David!

—Original—

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There are also relevant talks and papers available on Peter Apian-Bennewitz’s web sites:

http://www.pab.eu and http://pab-opto.de

Kind regards
Axel

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