[comp.graphics] 2D Digital Filters... eg: 2D Z-transform filter.

simpsong@ncoast.UUCP (Gregory R. Simpson @ The North Coast) (12/11/87)

I'm looking for a 2-d digital filter for filtering a
rectangular array of data... Basically, I have a bunch
of x,y,z data points illustrating the contour of a surface,
and I'd like to digitally filter them using a z-transform or
perhaps a fast polynomial transform. Since my data is almost
symetric I've been able to get some results by doing a 1-d
z-transform in two directions, but this isn't really the
proper way to do it, and the proper 2-d z-transform method
is quite a bit more involved, so before invoking on re-inventing
the wheel, I thought I'd ask the net if they had any such beast
lying around...

Thanks for your assistance,

Greg

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      Gregory R. Simpson       

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---
      Gregory R. Simpson       

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