Robust image hashing algorithm implementation? [closed]

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Is there any robust image hashing implementation in any programming language that I can use? This 开发者_开发技巧image hashing at minimum be able to generate the same hash for images that are altered in minor form (resized, rotated, minor touch, cropped etc ) .

The best example will be Tineye.com. They somehow hash each image and they are able to detect other duplicate images with minor modification.

I found some research but not implementation. http://scholar.google.com/scholar?hl=en&as_sdt=0,10&q=robust+image+hashing