[Insight-users] Fwd: borders on BoxSigmaImageFilter

[Matthew McCormick (thewtex)]

Resent without attachment so it would reach the list.


---------- Forwarded message ----------
From: Matthew McCormick (thewtex) <matt at mmmccormick.com>
Date: Tue, Apr 27, 2010 at 1:46 PM
Subject: borders on BoxSigmaImageFilter
To: richard.beare at gmail.com, Gaëtan Lehmann
<gaetan.lehmann at jouy.inra.fr>, insight-users at itk.org


Hi Dr. Beare, Dr. Lehmann, and list,

I was happy to find the itk::BoxMeanImageFilter and
itk::BoxSigmaImageFilter, and the considerable effort that went into
calculating these quantities efficiently with a running sum via a
ShapedNeighborhoodIterator.  I am looking at using an adapted version
of the BoxSigmaImageFilter during calculation of the pixelwise
normalized correlation coefficient.

However, I am running into a problem: a unity pixel border at the
output requested region has the value of zero.  See the attached
image.

Is this expected?  Am I not using the filter properly?  A bug?  I
tried looking for an Insight Journal article, but did not have any
luck.

Thank you,
Matt