[Insight-developers] some comments about ImageBoundaryFacesCalculator changes

[Bradley Lowekamp]

On Nov 17, 
>> 2. 1811 - GeodesicActiveContourShapePriorCallosumTest (Failed)
>> The errors could be traced back to
>> itk::ScalarAnisotropicDiffusionFunction<Image>::CalculateAverageGradientMagnitudeSquared(TImage
>> *ip)
>> When duplicate regions exist, the gradient magnitudes of part of boundary
>> regions have been counted twice or three times depends on image dimension
>> and locations . I think it is a bug, in the case, m_DuplicateOverlap should
>> be set false to avoid duplication.
>> 
>> 3. 1817 - WatershedSegmentation1Test1 (Failed)
>> The error could be traced back to itk::VectorAnisotropicDiffusionFunction<
>> TImage >::
>> CalculateAverageGradientMagnitudeSquared(TImage *ip) The same reason as 2.



I can confirm that these test are VERY sensitive to the value computed in this method, and this was the methods I multi-threaded an ran into the boundary face issue. These same tests failed for me!


========================================================
Bradley Lowekamp  
Lockheed Martin Contractor for
Office of High Performance Computing and Communications
National Library of Medicine 
blowekamp at mail.nih.gov


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