Having a valid CAPTCHA and then a digitization problem is okay, but recognize it doesn't mean that CAPTCHA can validly be used for digitization, or vice versa -- it just means that you've added a "service" element onto the CAPTCHA so people can do some useful work at the same time they are validating themselves (on a different problem).
Using handwriting for CAPTCHA can be good for some things, but you have to be careful because certain texts can have writing that regular people will misrecognize. For example: a 200 year old American text with a letter that will get entered by the majority as "B". Jake On 10/2/07, Jon D. <[EMAIL PROTECTED]> wrote: > > But most of these points are in fact addressed by > reCaptcha. The idea given below was simply using > handwritten texts, instead of printed books as input, > which would require just a little bit more > verification of accuracy. > > -Jon > > > --- Jacob Sorensen <[EMAIL PROTECTED]> wrote: > > > 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 > > > > > > _______________________________________________ > > Ldsoss mailing list > > [email protected] > > http://lists.ldsoss.org/mailman/listinfo/ldsoss > > > > > > > > ____________________________________________________________________________________ > Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated > for today's economy) at Yahoo! Games. > http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow > _______________________________________________ > Ldsoss mailing list > [email protected] > http://lists.ldsoss.org/mailman/listinfo/ldsoss >
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