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Surface fitting image with missing data [message #61811]

Wed, 30 July 2008 17:12

jradavenport
Messages: 6
Registered: July 2007

Junior Member

Hey all;

I have a 2-D array (essentially an image) with dimensions [n,m]

There is a large chunk in a corner of the image with no data. All
pixels have values greater than 1, except within this chunk, which =
0.

SFIT fits these as valid points and tips my surface (a plane) towards
this corner! I thought I would be terribly clever by doing the
following:

result = sfit( finite(image/(image gt 0)),1,/max_degree)

alas, SFIT isnt playing ball and makes a whole array of /NaN...

Thoughts? Is there a version of SFIT (or something similar) with a /
NaN keyword? A more clever way to fit a simple surface to an image
with missing data? Thanks folks

- Jim

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