how to speed up the n4 bias correction

I am using SimpleITK bias field correction for my NIFIT images
corrector = sitk.N4BiasFieldCorrectionImageFilter()
It takes too much time. Is there any way to speed up this process.


Hello @asmaharry,

The computation speed depends on the number of control points specified with the SetNumberOfControlPoints method. Possibly reduce the number of control points to the minimum which still gives sufficiently good results.