Find related images using color histogram

[lessthanoptimal]

Here's one possible way BoofCV could be used:

https://boofcv.org/index.php?title=Example_Color_Histogram_Lookup

A database would need to be created of images and their color histogram then you can look up "related" images. It's surprisingly effective for a simple approach. Once you have this capability it will also be easier add image recognition that will find images that are of the same scene but different camera views.