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I agree except for Snapchat, the real time computer vision they (or at least the startup they bought) put out I would have to say was on the cutting edge. Real time facial recognition was standard, but the facial transformations and 3d modelling in real time stood (and still stand) alone

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I don't use Snapchat, so correct me if I'm wrong, but aren't those relatively new developments? From a quick Google search, it seems that the acquisition of Looksery and the launch of "Snapchat Lens" didn't occur until September 2015. By then, Snapchat already had at least 80 million daily active users. While their current real time computer vision stuff is definitely not something the average engineer could make, it does seem like they started out as a cookie cutter app.

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