Approximate matching of images/video/audio is not new to Google's system. Google's system is certainly an impressive application of this stuff, though. http:/

Approximate matching of images/video/audio is not new to Google's system. Google's system is certainly an impressive application of this stuff, though. http://en.wikipedia.org/wiki/Digital_video_fingerprinting http://en.wikipedia.org/wiki/Digital_video_fingerprinting http://en.wikipedia.org/wiki/Acoustic_fingerprint http://en.wikipedia.org/wiki/Acoustic_fingerprint http://en.wikipedia.org/wiki/Scale-invariant_feature_transform http://en.wikipedia.org/wiki/Scale-invariant_feature_transfo...