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Filtering captcha

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Filtering captcha

Postby kadzu » Wed Jan 18, 2017 1:51 pm

I`m trying to filter this captcha, i need to make the letters white ( only the ones of the capctha solution , not the ones mixed in the background ) and the rest of the background black. Does anyone know how to do this?
Or at least that can solve most of them .

Here a few examples of the captcha :

http://imgur.com/a/uCE8e
kadzu
 
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