[vtkusers] cylindrical projections with VTK

[Kenny Leung]

Hi Karthik

Thanks for the response.

I don't know much about the internals of VTK. Would this give a true  
projection like the orthogonal X-ray like projections that we're used  
to now, or would it be a slice of the data?

Also, would Kitware be willing to create this functionality under  
contract?

Thanks!

-Kenny


On Nov 10, 2007, at 8:59 AM, Karthik Krishnan wrote:

> Kenny:
>
> You could use vtkImageReslice to compute MPR's.
>
> The class is capable of taking in a transform (see  
> SetResliceTransform) to resample an image. You could construct a  
> vtkCylindricalTransform and set it as the resample your image using  
> the transform.
>
> Then extract a slice, again using vtkImageReslice. See  
> SetResliceAxesDirectionCosines. This should produce your  
> cylindrical MPR.
>
> ----
> It would be nicer to have a curved MPR widget though in VTK, where  
> the curve is specified via landmarks. We do see potential  
> applications in dental imaging.
>
> -- 
> Karthik Krishnan
> R&D Engineer,
> Kitware Inc.
>
> On 11/10/07, Kenny Leung <kenny_leung at pobox.com> wrote: Hi All.
>
> I've worked a bit with VTK on a diagnostic imaging programing for
> orthodontics. Does VTK have the functionality to create cylindrical
> projections for generating virtual panoramic X-rays from a CT-Scan of
> a head?
>
> Thanks for any info.
>
> -Kenny
>
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