Re: Going from simple to super CAPTCHA

From: Date: Mon, 11 Jun 2007 18:27:33 +0000
Subject: Re: Going from simple to super CAPTCHA
References: 1 2 3 4 5 6 7 8 9 10  Groups: php.general 
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On 6/11/07, Daniel Brown <parasane@gmail.com> wrote:
Tijnema <tijnema@gmail.com> spake the following lore: Convert image to fixed width + fixed height + default depth, then do some work on it :P Tijnema Yeah, what work? Best of luck with getting a system to reliably translate one Jell-o blob of an image into another accurately and reliably. It's ASCII art time! Say I have an image of a cigarette: _______________________________ (_____(________________________@ Then, I morph the image so that it's SNAFU'd:
     _______
    / \____    \_/ @/
  /    /       \_____/
( __/ Keeping in mind that it's ASCII art, you can still see the similarities. A computer, with an actual graphical image, probably wouldn't recognize it. It may instead see it as a snake, which could initially look like this:
      //==\\      =o~
<==//      \\==//
Then matched with a selection of images that the user could pick from, the snake is morphed to: <============o~ To be a bit easier, I whipped up a quick example on the web. It's just static images, not a working system, but you'll see what we're getting at here:
       http://pilotpig.net/captcha-example.php
You could even use a color check here to see which color matches the best ;) Tijnema

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