Assume you have 77777 pictures that are mostly noise. They are about magnetic anisotropy.
There is one picture among these pictures which has high contrast difference between two large areas (some sort of magnetic gap because of magnetic anisotropy). One area is gray and the other area is dark.
The pictures are mostly like this (grey or dark)
There are some dirty things in some pictures which are just rubbish on the lens. So only big differences are essential. Example what the contrast difference should look like
These pictures are about magnetic anisotrophy with Fe and Boron.
How can you find the distinction among these 77777 pictures?
I have went through all of these pictures but my method is errorprone, since I just browse them through.
How can you assist browsing the find the big and large contrast difference in pictures?
Any tool is ok for me: Matlab, Python, ..., pseudo-code too.