Google has released Google Image Swirl, a similar images explorer that is using the wonder wheel flash visualization from web search results.
Here's an example of working of Google Image Swirl.
Suppose you enter query like “lion”. The Google Image Swirl will load a bit and find if the keyword is supported or not. In case it is, then Image Swirl will present you with some visual base categories:
Google already has a “Find similar images” link in Google Images, which is also fast to use. The only difference between Image Swirl and the already existing similar images feature is that Swirl always takes the original keyword into the account, thus showing the new images that look similar. Whereas, the similar images explorer don't take the keyword in account and do a free-style visual search.
Both the applications have pros and cons. Introduction of Image Swirl will provide an additional matching application that will allow users to visually browse for results based on basic shapes that become more refined & end up showing the target picture.