Is this something that could be scaled up and used, for instance, to recognize features in images?

Or to put it another way are there any local only tools that can be trained on my own set of images to automatically tag new images? Tools that do not already have built in classes of image.

I take a lot of photographs and it would be handy to reduce the drudgery of tagging them so to say broadly what the subject was so that they are easier to find later.