This site combines two concepts. The first is helping to correct poorly scanned in books. Machines can’t always correctly scan and convert to text images of text. Humans are much better at it. And identifying humans to stop scripts being used say to create free email accounts is often done by using a captcha. You are shown an image and asked to type in the text or numbers. Captcha is short for Completely Automated Public Turing test to tell Computers and Humans Apart .
This site serves captcha images to websites and email anti-spam using text images from badly scanned books. The correct results are then used to update the scanned book image. Quite clever though I do wonder how they know an answer is correct without doing the donkey work in the first place!
Popularity: 12% [?]
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