[Insight-users] better not use image pyramid?

[Grace Chen]

Hi all,  good day!

I use the transform and the optimizer (VersorRigid3DTransform, VersorRigid3DTransformOptimizer, and CenteredTransformInitializer) to perforom 3D rigid registration on my data, and I notice that in itk example, the image pyramid isn't used for the 3D registration.  I tried adding that to my registration program, but it produced worsely registered output.  Does anyone one know why?  Does that mean I shouldn't use image pyramid technique for registering 3D data?

Thanx!!

Grace
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