[Radiance-general] Difference between .pic colours and traced ray colours

[Tarik Rahman]

Hi there
I'm wondering why when I view a .pic image I've created in HDRShop, the pixel
values aren't the same as when I generate a text file of their colours using
vwrays.

I wnat a green box's surface reflectances in the pic file so I do

./vwrays.exe -fd greenbox.pic | rtrace -fda `vwrays -d greenbox.pic`
-ovm `if(s='green_plastic')` testroom.oct  | grep "green_plastic" > rays.txt

Is it because I need to put an I in there somewhere for irradiance values?

Thanks for any help

Tarik


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Tarik Rahman
PhD student, Institute of Perception, Action and Behaviour
School of Informatics
University of Edinburgh