[vtkusers] About ResliceAxes in vtkImageReslice

[Henk Jonas]

Hi,

using the ImageReslice class to extract slices from a voxel volume, it 
seems to me the three different angles are used to create the slice in a 
different way:

Assuming I define my coordinate system using 3 unit vectors and rotate 
this coordinate system and set the rotated unit vectors as reslice axes:
x' y' z' (gives a slice in the x,y plane and z is a normal vector to 
this plane). Now the rotations around x and y lead to a picture as I 
would expect it. The plane is rotated and the slice is extracted. A 
rotation around z although leads to a picture which looks like as the 
slice was extracted using the rotations around x and y and then the 
resulting image is rotated around its normal vector. Can someone confirm 
this or is it me doing something wrong?

And another question: which parameter do I have to adjust to control the 
size of the resliced part from my voxel volume? I only extract a small 
square from the volume, it doesn't seem to be the whole possible image.

Best regards
Henk


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   Henk Jonas
   Palm OS ® certified developer

   metaview at web.de                                   www.metaviewsoft.de
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