There is an atmospheric phenomenon where objects further away appear more blue than the same object close up. This is due to the atmosphere being blue and refracting light yadda yadda yadda.
My question is what is the actual rate of increase in blue coloration per foot or meter? I know it varies given weather conditions but given a clear sunny day what would be the average?
Reason I’m asking is I’m trying to modify a game (Fallout 3) to be more realistic in it’s perception of depth.
The problem with your question is that the answer is in the “yadda yadda yadda”. It’s not just an increase in “blue coloration” for a given distance; the absorption and scattering and like in the blue part of the spectrum is dependent upon the quality of the ambient spectra and density and humidity of the atmosphere. There are several ray-tracing algorithms which have features designed to replicate atmospheric scattering. See here for a high level explanation of one system.
For game purposes you could just swag a guestimate or perform a simple physical experiment, but if you want to accurately replicate atmospheric scattering you actually have to get into the optical phenomena; you can’t just scale up the blue content of an image.
Stranger