me_irl

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me_irl (lemmy.today)

submitted 3 days ago by sanitation@lemmy.today to c/me_irl@lemmy.world

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[–] zikzak025@lemmy.world 6 points 2 days ago* (last edited 2 days ago)

The earliest ones that asked you to type two words were also used to help digitize the Google Books library, for cases when the OCR wasn't quite able to match a word confidently. That's why you'd get a pair, one that was clearer but "jumbled" to be unreadable to computers, the other looked more like a fuzzy scan (or occasionally just a complete mess of misplaced ink), though both had a wavy effect applied to them. Only the clearer one was needed to pass the test, the other was just free training for their OCR process.