Are there some methods to smooth a displacement vector field?

Hi, I got a displacement vector filed after the non-rigid registration. I want to smooth the displacement vector field. Are there some methods in ITK?

Hello @guo7212,

Yes, standard Gaussian smoothing is available, see SmoothingRecursiveGaussianImageFilter.

Another option:

https://itk.org/Doxygen/html/classitk_1_1DisplacementFieldToBSplineImageFilter.html

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Thanks.

Thank you.