Mapping CPR image pixel coordinates back to world coordinates with vtkImageCPRMapper

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1

Hi,

I’m using vtkImageCPRMapper to generate a curved planar reformation (CPR) image from my 3D volume along a centerline polyline. Now I’d like to take a pixel coordinate (u,v) in the resulting CPR image and find the corresponding (x,y,z) point in the original volume’s world coordinate system.

What’s the recommended VTK-based workflow or helper methods to perform this mapping?

Is there a built-in function in VTK that given (u,v) returns the world coordinate, or do I need to implement the steps manually?

Any pointers to example code or relevant VTK utilities would be greatly appreciated!

Thanks in advance,

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You might want to look at vtkCPRManipulator class implementation. There might be some useful information there.

Hth,
Julien.