Simulate infrared film

[Medium]

I think you need to elaborate a bit more, or show examples of what you have in mind. Extracting actual IR infos from normal computer images is obviously impossible, though there are some CCD chips out there, that respond to IR sources. But how this manifests in the RGB domain is entirely arbitrary, and should not yield any usable data. Hence what you think of needs to be some sort of a fake-IR filter, for which there is no standard, and needs way more explanation from your side.