How to choose a background color for an image?

Question

Unity

you need to dynamically select a color for the background of the image
, let's say you found brightness and saturation at which hue are all pleasing to the eye, how to choose to sort through hue in the code?
How can I define such a hue from the atmospheric light of an image so that it looks like ambilight?
how to implement something like this?

Answer 1

you sit and do not believe that you need to get the average RG and B around the perimeter, convert to HSV, set s and v, and then convert to rgb