Google similar images has just launched, and it looks pretty impressive. Basically, you can search for images using normal Google image search, but now you can click on “Similar images” below each result and see, well, similar images. How does this work? Google already has huge amounts of meta data associated with each image, and that combined with their Google image tag game means it can easilt figure out what is similar. Also, Google does some more processing on the images to find even more accurate matches.

So, a quick test. I searched for “Audi R8″, and got the following results:

I clicked on one of the results, and got this:

This very cheezy Google vid explains it a bit more: