[ITK-users] Measure of geodesic (metric) distances for shape interpolation with deformable registration.

[kaiwenw]

Dear ITK Community,

I was able to code up deformable registration with BSpline.
Now, I'm looking for a measure of metric distances of the deformation. This
will allow me to deform the moving shape along the geodesic (to the fixed
shape) and stop whenever I wish (allowing me to interpolate between shapes).

For example, the result I'm looking for is shown in the image by Rohde et
al., 2007:
<Loading Image...>

They used LDDMM, but ITK does not have LDDMM (which is why I'm using BSpline
for non-rigid registration). If this shape interpolation is not available
with BSpline registration, is it possible with other ITK registration
methods?

Thanks all!




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[Matt McCormick]

Hi there,

ITKv4 has LDDMM-like velocity field registration. For more information, see [1].

HTH,
Matt

[1] http://journal.frontiersin.org/article/10.3389/fninf.2014.00044/full

Post by kaiwenw
Dear ITK Community,
I was able to code up deformable registration with BSpline.
Now, I'm looking for a measure of metric distances of the deformation. This
will allow me to deform the moving shape along the geodesic (to the fixed
shape) and stop whenever I wish (allowing me to interpolate between shapes).
For example, the result I'm looking for is shown in the image by Rohde et
<http://itk-insight-users.2283740.n2.nabble.com/file/n7589962/Screen_Shot_2017-05-20_at_3.png>
They used LDDMM, but ITK does not have LDDMM (which is why I'm using BSpline
for non-rigid registration). If this shape interpolation is not available
with BSpline registration, is it possible with other ITK registration
methods?
Thanks all!
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View this message in context: http://itk-insight-users.2283740.n2.nabble.com/Measure-of-geodesic-metric-distances-for-shape-interpolation-with-deformable-registration-tp7589962.html
Sent from the ITK Insight Users mailing list archive at Nabble.com.
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Visit other Kitware open-source projects at
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http://www.itk.org/Wiki/ITK_FAQ
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[kaiwenw]

Dear Matt,

Thanks for the quick response!
I have seen the article before (and now I read through it again), but I
could not find a function that calculates such geodesic distances between
shapes or a function that morphs the moving shape to a specified distance.
Though, after this read, I saw that there is a
itkTimeVaryingBSplineVelocityFieldImageRegistrationTest.cxx file. So I
suppose there exists such a technique for BSpline registration?

Could you kindly point me into the right direction? I am kind of new to the
ITK framework.
Also, just for additional information: I am using the Python wrapped
SimpleITK.

Thanks!

Kevin



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