Hi
You should try the duplicate file finder in CCleaner, it has a number of parameters for finding the duplicate files.
If you unclick the box to look for duplicate file names it will search by file size, type and content.
I just tried it with and without using names and it appeared to find the same files either way.
At least it will give you some place to start.
The only real problem is that while it will let you ignore many types of files like system files it won't let you tell it what file types to look for.
If would be nice if you could look just for .jpg files or .tif files for example.
But even if you don't include file names in the search it will show the file names when it displays them along with the file type so you can screen out the extensions that your aren't interested in.
Just look at the duplicate files with the .jpg extensions for instance, they will be listed together and it will show the locations.
Mike
I got curious and looked around, I found a program called Duplicate Sweeper that may be more useful because it allows you to be more targeted in your search. I downloaded it and no alarms went off and after a brief look it seems like it may be what you are looking for.
It appears that if it finds two image files that are dups it will display them side by side. You can download the sample version but you have to pay to activate it.
Download Duplicate Sweeper for free | Wide Angle Software