[Insight-users] rotation of region

[Lydia Ng]

Felix,

One thing you could try is to create a signed distance of your binary image
and transform the signed distance map using say a linear interpolator. After
the transform, you can get a binary image back by thresholding at zero.

This idea comes is inspired from:
S. P. Raya and J. K. Udupa, "Shape-based interpolation of multidimensional
objects", IEEE Trans. on Medical Imaging, vol. 9, no. 1, pp 32-42, 1990.

- Lydia

-----Original Message-----
From: Felix Schwenk [mailto:felix.schwenk at nme.at] 
Sent: Monday, June 14, 2004 12:09 PM
To: insight-users at itk.org
Subject: [Insight-users] rotation of region

hi,
i'v got a 3D image containing one region with value 1 everything else 
is 0. when i try to rotate the region using QuaternionRigidTransform 
it gets holes containing 0 values. this is, i guess, because of
interpolation.
is there any good way around this? i thought of converting it into a
mesh or something, 
then rotating it, is this a good idea? is there any better?

felix.

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