[Insight-users] ConvolutionImageFilter only works with scalar images?

[Matt McCormick]

David Doria <daviddoria at ...> writes:

> 
> Is there and ITK equivalent of
> vtkImageExtractComponents/vtkImageAppendComponents that will let me
> 'disassemble', operate on, and then 'reassemble' this type of image
> one "channel" at a time?
> 

This
http://www.insight-journal.org/browse/publication/774
or this
http://www.itk.org/Doxygen/html/classitk_1_1NthElementImageAdaptor.html

would work coupled with
http://www.itk.org/Doxygen/html/classitk_1_1Function_1_1Compose3DCovariantVector.
html

Re: the ConvolutionImageFilter:  There are some other issues with it too that 
could be fixed up.  E.g., the internal use of 'double' in 
itkConvolutionImageFilter.txx.  Also, itkImageKernelOperator could be reworked --
if the kernel image does not have the size implied by the operator radius it 
causes a crash.

Regards,
Matt