ImSim: Image Similarity

[n00m]

>
> Is it better than this?
> - scale each image to 100x100
> - go black&white in such a way that half the pixels are black
> - XOR the images and count the mismatches


It's *much* better but I'm not *much* about to prove it.



> I'm sure there are better,
> well-known algorithms.


The best well-known algorithm is to hire a man with good eyesight
for to do the job of comparing, ranking and selecting the pictures.