[asterisk-users] OT - Fax and anti-spam

[dave cantera]

I did some research on spam filter about a year ago.  there are image 
analyzers that can detect human skin tones in images detecting porn.  I 
have seen some examples of how the porn guys speckle the images to 
obscure, somewhat, the naked bodies. 
the OCR idea would be useful but the OCR engine would have to be pretty 
good and there is not many of those.  you would have to apply the same 
filtering techniques that email spam employes, there are several, and it 
would take a considerable effort.  just like the email spammers change 
domain names, the fax spammers change phone numbers...
ugh...
daveC

Tzafrir Cohen wrote:
> On Wed, Dec 12, 2007 at 10:37:45AM +0000, lotusscript wrote:
>   
>> Never tried this but what about running the fax through an OCR ( gocr ) 
>> then composing a mail with sendmail putting the text recovered from the 
>> fax in the body and appending the original tiff image to the mail.
>>     
>
> How well does this work with non-spam faxes?
>
> I figure that spammers may take extra steps to make OCR difficult (see
> e.g. the wikipedia article or your spam folder). But providing the
> content as text can probably be a useful addition for fax2mail.
>
>   

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