On Mon, 15 Oct 2007, Don Stewart wrote:
  

    http://alberrto.googlepages.com/easyvision
    "An experimental Haskell system for fast prototyping of computer vision
    and image processing applications."
Looks ridiculously cool.
    

Image processing with Haskell - really interesting.

I know of an older approach:
  "Prototyping Real-Time Vision Systems: An Experiment in DSL Design"
     by Alastair Reid et.al.