[vtkusers] question on vtkImageData orientation support

[Xiaofeng Z]

My understanding of vtkTransform is that it resamples/reorients the pixel data.  Does that mean vtkImageData assumes a particular coordinate system and it's the user's responsibility to keep track of orientations?

Xiaofeng


You can use vtkTransform to rotate the RT Dose matric to your desired orientation.

Jothy


On Fri, Nov 5, 2010 at 2:09 AM, Xiaofeng Z <xf10036 at hotmail.com> wrote:

  Hi, vtkusers,

  I have this algorithm that computes dose-volume histogram out of RT structureset and RT Dose.  Right now the algorithm works only when RT Dose has a 1,0,0 and 0,1,0 orientation.  I need to use the algorithm for other RT Dose orientations.  I have too options, either to modify the algorithm, or to convert RT Dose orientation to 1,0,0 and 0,1,0.  I prefer to former, but only if vtkImageData support multiple orientations.

  So my question is, can vtkImageData store pixel data in different orientation, and if so, how the orientation information is set and get?

  Thanks!

  Xiaofeng





------------------------------------------------------------------------------
  From: xf10036 at hotmail.com
  To: vtkusers at vtk.org
  Date: Thu, 4 Nov 2010 21:02:08 -0400
  Subject: [vtkusers] question on vtkImageData orientation support 


  Does vtkImageData:SetExt(int ext[]) support inverse orientation, such that ext[0]<ext[1], ext[2]<ext[3], etc?

  Thanks!



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