[vtkusers] vtkResliceImage and appending slices

[zarko.milosevic]

When 3d image is sliced with arbitrary, oblique slice than all sliced voxels
would not have same spacing. Right ? But if I assume some output spacing
then I will get inaccurate dimensions.

 

Zarko

 

From: David Gobbi [via VTK]
[mailto:ml-node+s1045678n5729500h31 at n5.nabble.com] 
Sent: Tuesday, November 18, 2014 11:56 PM
To: zarko.milosevic
Subject: Re: vtkResliceImage and appending slices

 

On Tue, Nov 18, 2014 at 3:40 PM, zarko.milosevic <[hidden email]> wrote:

Hi David again,

It`s been a while. I`m getting back to the same problem. If I put my own
spacing for the output image then the resulted image will have wrong
dimensions. If i try to measure something on the resulted oblique sectioned
image those measures will not be realistic. Am I right ?

 

If you set the output voxel spacing, then you _know_ the output voxel
spacing.

And in fact VTK knows the output voxel spacing too, because it is stored
with

the vtkImageData.

 

You are always taking the voxel spacing into account when you are making

your measurements, aren't you?  If you do so, then all the measurements

should be accurate.

 

 - David 


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