Fernando Gonzalez del Cueto wrote:
>
> I added a bit of noise to the image to give it a more "photo" look.

I found that adding Gaussian noise individually to each channel
and twice as much to blue channel duplicated quite accurately
noise in a couple of 6000dpi slide scans. Blue channel is more noisy
in all imaging systems. I scale up the image, add noise, blur a little
to prevent noise aliasing, scale down and mix with original.


Was fresnel and conserve_energy used?


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Kari Kivisalo

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