FW: [Insight-developers] itkResampleImageFilter

[Lydia Ng]

ResampleImageFilter simply does a coordinate transform.
Interpolation is only used to obtain image values at non-integer
positions.

As such, it doesn't do any lowpass filtering.
In-plane (column-row) it will simply subsample every 4th pixel.
In the slice dimension, interpolation is used to
extend the 51 slices to 64 slices.

MultiResolutionPyramidImageFilter does both smoothing
and dowsampling. However, it cannot be used in your
case as it cannot cope with the increase in image size=20
in the slice dimension.

Lydia

> -----Original Message-----
> From: Yinpeng Jin [mailto:yj76@columbia.edu]
> Sent: Monday, December 10, 2001 6:02 PM
> To: Insight-Developers
> Subject: [Insight-developers] itkResampleImageFilter
>=20
>=20
> Is/can tis filter just doing rescaling? for example, I want=20
> to rescale a
> dataset of 256x256x51 to a 64x64x64 dataset. I just want to=20
> rescale along
> all dimensions, probably some lowpass filter to avoid alias.
> I tried this filter (using the same paramters of transform=20
> and interpolation
> as in the Testing cxx), but the result image is not quite right.
> Yinpeng.
>=20
>=20
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>=20