Re: spectral tonemapping possible?

I am a rocket scientist. No, I'm not.

The issue is how to use spectral curves to process an image in Photoshop. I already gave the example of using the light output data from a 'blackbody' emitter (a.k.a. a lamp) to bias an image so it would appear to have been lit with that sort of light. We are all familiar with the color temp. settings (I use 6500K) for monitors, well, that's where it comes from.

Another example is to use PS to fake a photographic technique where IR film (infrared) is exposed without a daylight filter, and a second frame is shot on a standard daylight film, then the second is used to mask the first, leaving just the IR portion. Logic suggests that this would only work with a studio shot because clouds move, trees too, so the frames wouldn't line up all that well. Using Photoshop to remove the visible light portion of the image sounds like the perfect solution.

Workflow? I don't have one. I have tried a few things, looked online for plugins, never found anything that works. But PS is so versatile that I bet I'm missing something.


Ernest Burden III
Acme Digital