[Radiance-general] Computing irradiances for glow materials

[Lars O. Grobe]

Hi!

> Radiance = Irradiance * Reflectance / Pi

That was the idea, yes, assuming that the ultimate goal is to get 
irradiance.

As Christopher mentioned, using some raw exposure will probably not 
allow you to get any approximation of pixel Radiance. You can try 
multiple exposures to widen the dynamic range, but in any case you need 
calibration. I would recommend spending some time with an integrating 
sphere to calibrate the response and to validate the results over the 
dynamic range you expect to cover.

Cheers, Lars.

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