[Insight-users] Discrete vs. RecursiveGaussianImageFilter?

[Eve]

Hello,

According to ITK-Guide, "when the Gaussian kernel is small, the
itk::DiscreteGaussianImageFilter filter tends to run faster than
itk::RecursiveGaussianImageFilter". For a 200*20*200 volume, how small a
kernel is consider "small"? i.e. what range is considered small? Also, what
are the (different) effects of "SetUseImageSpacing()" if the spacing between
slices is large vs. small?
 
Thanks,
Eve

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