[Insight-users] Non-planar slicing

[Bradley Lowekamp]

Hello,

I have not done this myself, but I have an idea on what may work.

The ResampleImageFilter is really quite generic, and flexible so this is likely the right track. While I don't think it can go from 3D to 2D you can go from 3D to a single slice. Then you can jump through the hoop of extracting a slice into a 2D image.

What you are missing to use the resample filter this way is the correct Transform. While you could use a deformation field, or a b-spline, your description of conical shapes 
mays me think that you may be better off defining you one implicit transform.

I hope this helps.

Brad


On Jun 7, 2012, at 2:08 PM, sgfallows wrote:

> I need to extract a 2D image from a 3D data set by what I would call
> non-planar slicing. Imagine a sheet of paper curled into a parabola or
> half-ellipse, in the middle of a 3D volume. I want to extract the points on
> the sheet of paper into a flat 2D image. (If there is a better/standard term
> for this, please correct me). The curve would be defined by a poly-line or
> Bezier.
> 
> AFAICT, the closest thing in ITK is ResampleImageFilter(), however I'm
> having trouble figuring out what the transform would be. All the examples
> seem to map 3D to 3D. Or is this the wrong approach to begin with?
> 
> Can anyone point me at something similar?
> 
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========================================================
Bradley Lowekamp  
Medical Science and Computing for
Office of High Performance Computing and Communications
National Library of Medicine 
blowekamp at mail.nih.gov



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