I've seen this idea before, and the main problem is that digitizing scanned words and CAPTCHA are at cross-purposes. The problem in digitizing is that the computer doesn't know the word. In CAPTCHA, the computer knows the word, and it needs to in order to validate the user. If you don't know for sure that the word was typed in correctly, you can't validate the user.
CAPTCHA words can be used to validate once they're known, but that kind of defeats the purpose. You could just take the "majority" answer, but in order to gather a strong majority you would have to let some minority answers through, some of which may be invalid users who should not be allowed access. I suspect using digitized text for CAPTCHA would not provide as much use on the digitization side as one might think. Jake On 10/2/07, Jon D. <[EMAIL PROTECTED]> wrote: > > Here's an idea... > Some of you may have seen today's (and previous) > Slashdot links on reCaptcha, a cool idea > that's starting to be more commonly-used: > > http://news.bbc.co.uk/2/hi/technology/7023627.stm > http://recaptcha.net/learnmore.html > > Basically they're using a CAPTCHA to digitize old > scanned books.[1] > > This could be applied to handwritten historic records. > However, it might be hard to trust regular schmoes to > correctly transcribe handwritten historic texts. One > way to address this might be to just ask more people > the same word, and if they all (or mostly) match, we > can be fairly certain it's transcribed correctly. > Or this could just be used to verify a previous manual > transcription. > > Thoughts? > > -Jon > > > > [1] FYI, a CAPTCHA is where you have to type > a distorted word - to stop spammers & hackers. For > example, when you mistype your password to enter gmail > or yahoo mail enough times, it'll require you to type > in a word that's blurred. The new application of this > anti-spam technique is to use scanned books as the > source of words. > > > > > > ____________________________________________________________________________________ > Yahoo! oneSearch: Finally, mobile search > that gives answers, not web links. > http://mobile.yahoo.com/mobileweb/onesearch?refer=1ONXIC > _______________________________________________ > Ldsoss mailing list > [email protected] > http://lists.ldsoss.org/mailman/listinfo/ldsoss >
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