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I don't know how their system really works, but surely they extract features from the video and index the hell out of it. So they are not actually comparing fr
by pbw 16y ago
I don't know how their system really works, but surely they extract features from the video and index the hell out of it. So they are not actually comparing frames of video here. With clever features and a good index you can rule-out millions of videos with very small amounts of computation.
It's impressive but it is the same idea as the normal text index. You could say it's mind boggling that Google searches through every document in 0.2 seconds, but they don't really search through them, they do lookups in an index.
- loumf 16y agoRight, but they match words against words more or less. This matches even if the video is degraded, cropped, etc. They have figured out how to apply stemming concepts to video and audio.
- pbw 16y agoApproximate 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...