On Wed, Oct 20, 2010 at 11:31 PM, Bill Lorensen <<a href="mailto:bill.lorensen@gmail.com">bill.lorensen@gmail.com</a>> wrote:<br>><br>> Did you look at this test?<br>> <a href="http://itk.org/gitweb?p=ITK.git;a=blob;f=Testing/Code/BasicFilters/itkNormalizedCorrelationImageFilterTest.cxx;h=f5f9ee272e81000fb3b8777e1d2182f3af739df7;hb=HEAD">http://itk.org/gitweb?p=ITK.git;a=blob;f=Testing/Code/BasicFilters/itkNormalizedCorrelationImageFilterTest.cxx;h=f5f9ee272e81000fb3b8777e1d2182f3af739df7;hb=HEAD</a><br>
<br>Yes. It uses an AnnulusOperator rather than a piece of an image.<div><br>David</div>