Looks Like It - The Hacker Factor BlogFor the last few months, I have had a nearly constant stream of queries asking how TinEye works and, more generally, how to find similar pictures. The truth is, I don't know how the TinEye image search engine works. They don't disclose the specifics of the algorithm(s) that they use. However, based on the type of results it returns, it appears to me to be some variation of a perceptual hash algori
