Re: An OCR plug-in for Spamassassin

[Valdis.Kletnieks () vt edu]

On Sun, 16 Apr 2006 22:07:16 MDT, Dude VanWinkle said:

> Does anyone know how CPU intensive would it be to OCR the amount of
> messages a large corporation receives in one day? I seem to remember
> omnipage taking a bit of the cycles when it was running and even
> though the OCR systems in development will be a sight better, I am
> still curious if this technology will at first end up being a possible
> DoS before it matures.

OCR it the first time, and then save the data.  When another JPG
shows up, just compute a hash of it, and if you've seen that hash before,
use the OCR from the first time.

That should work till the miscreants start pumping out differing tweaked images
for each spam... ;)

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