Find similar image(s) from source image

[King Mustard]

I have a source image and I want to check a directory full of images, to see if a similar image already exists there.

Anyone got any ideas?

The image won't be an exact match, so I can't search by filename, file size etc.

 

[t31os]

There's some suggestions in this thread here on apps that can find similar looking images, ie. visual matching vs data end matching.

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