I was wondering how they approximated the invisible parts of the spectra as it was brought into view. Apparently, they used absorption spectrum of the sky and r

I was wondering how they approximated the invisible parts of the spectra as it was brought into view. Apparently, they used absorption spectrum of the sky and reflection spectrum of the water. They completely ignored thermal radiation, and made up the color of buildings. All things considered they did well, but I would ideally like to see something like there where you use camera footage from UV and Near and Far infrared.