Facebook has some weird CAPTCHA requests..

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8 Oct 2007
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Have to admit this made me giggle....

randombf4.jpg
 
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It's actually using the RECAPTCH system which pulls words from real books that the OCR systems can't identify. By solving the captcha you are actually improving the accuracy of scanned text from some book.
 
It's actually using the RECAPTCH system which pulls words from real books that the OCR systems can't identify. By solving the captcha you are actually improving the accuracy of scanned text from some book.

That's silly, someone must have already entered the correct data if that were true. Or how would it know if you'd entered the right word or crap?
 
It's actually using the RECAPTCH system which pulls words from real books that the OCR systems can't identify. By solving the captcha you are actually improving the accuracy of scanned text from some book.

That doesn't make any sense at all - someone has ALREADY "solved" it because that's what your text is being checked against - if it hasn't already been solved how does it know whether you've got it right?

:rolleyes:
 
I don't understand, if the OCR cannot read the word then hows does it know if I got the word correct?

Ahh I didn't refresh the page in a while and now I realise this point has already been made haha.
 
recaptcha.net said:
reCAPTCHA improves the process of digitizing books by sending words that cannot be read by computers to the Web in the form of CAPTCHAs for humans to decipher. More specifically, each word that cannot be read correctly by OCR is placed on an image and used as a CAPTCHA. This is possible because most OCR programs alert you when a word cannot be read correctly.

But if a computer can't read such a CAPTCHA, how does the system know the correct answer to the puzzle? Here's how: Each new word that cannot be read correctly by OCR is given to a user in conjunction with another word for which the answer is already known. The user is then asked to read both words. If they solve the one for which the answer is known, the system assumes their answer is correct for the new one. The system then gives the new image to a number of other people to determine, with higher confidence, whether the original answer was correct.
 
It takes a word you enter that is unknown to it and assums it to be the right answer, it then gives it to someone else and on and on (3 times I think) and if you all put in the same thing then it assums it to be correct! Crazy!
Not sure how to do these using elinks yet though, essentially blocking my access to some websites!
 
It still didn't make any sense from the initial post, and if I went and looked it up rather than replying you wouldn't have anything to moan about either, would you?

That's what this place is you, you know, a bit of banter and chat? Or have I got that wrong too?

:)
 
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