What can DCC do for image spam?

I've been reading Ironport's advertizing.  They claim good success
rates on blocking image spam.  In addition to analysis of the message
body, they use OCR techniques to extract the text from the image, as
well as examining the composition of the image for features typical of
current spam.  Could DCC do anything of this sort for image attachments?

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-Gary Mills-    -Unix Support-    -U of M Academic Computing and Networking-