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Capturing Text from CAPTCHA Images

P: n/a
Hai all,
I am doing a project in .net and in that project I have a problem in
capturing text from an image. i.e images like CAPTCHA images . which has
inbuilt text with in the image.So, Can any one suggest me how to continue
my work or give their valuable suggestions for capturing text in the
CAPTCHA image .
yours
KrishnaKumar
Nov 19 '05 #1
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4 Replies


P: n/a
Hai all,
I am doing a project in .net and in that project I have a problem in
capturing text from an image. i.e images like CAPTCHA images . which has
inbuilt text with in the image.So, Can any one suggest me how to continue
my work or give their valuable suggestions for capturing text in the
CAPTCHA image .
yours
KrishnaKumar


Hello there,
Actually, giving you the answer here would mean helping spammers
continue their work...
=(

Nov 19 '05 #2

P: n/a
See:

http://www.captcha.net/

Note that the purpose of a CAPTCHA image is to render an image containing
text that A COMPUTER PROGRAM CANNOT READ.

In fact, I can't think of a single reason why you would want to, unless
you're a hacker, or some other evildoer.

--
HTH,

Kevin Spencer
Microsoft MVP
..Net Developer
Everybody picks their nose,
But some people are better at hiding it.

"Krishna Kumar" <kr**********@nannacomputers.com> wrote in message
news:%2****************@TK2MSFTNGP14.phx.gbl...
Hai all,
I am doing a project in .net and in that project I have a problem in
capturing text from an image. i.e images like CAPTCHA images . which
has inbuilt text with in the image.So, Can any one suggest me how to
continue my work or give their valuable suggestions for capturing text in
the CAPTCHA image .
yours
KrishnaKumar

Nov 19 '05 #3

P: n/a


*** Sent via Developersdex http://www.developersdex.com ***
Nov 19 '05 #4

P: n/a

"Kevin Spencer" <ke***@DIESPAMMERSDIEtakempis.com> wrote in message
news:O2*************@TK2MSFTNGP14.phx.gbl...
Note that the purpose of a CAPTCHA image is to render an image containing
text that A COMPUTER PROGRAM CANNOT READ.

In fact, I can't think of a single reason why you would want to, unless
you're a hacker, or some other evildoer.


I'm not saying that this is the original poster's reason, but I can
think of a few reasons why you'd want to try to write a program to defeat
CAPTCHA with good intentions.

1) It's a form of Turing test. If you're into AI, that alone should
drive you to try to defeat it.
2) It's one of the easier Turing tests. If you're a pretty good
programmer, and you want to get your feet wet into the world of AI, this
might be a good challenge (certainly easier than the traditional test of
making a chatterbot which can hold a meaningful conversation).
3) You realize that you're not the smartest programmer in the world, and
yet you think you can defeat CAPTCHA. If you can defeat CAPTCHA, that means
someone else can probably defeat CAPTCHA too. You don't know if the intent
of that other person is pure, but you know your intents are pure. You can't
stop "evildoers" from solvign CAPTCHA, but what you can do is solve it
yourself, and then publish your algorithm and an explanation of how you
solved it so that a better CAPTCHA can be constructed.

- Oliver
Nov 19 '05 #5

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