[Insight-users] about itkShapeDetectionLevelSet

[Luis Ibanez]

Hi Yixun,


Yes, Most of the level sets filters do not take pixel spacing
into account.

You may be forced to supersample the image if you want to get
an isotropic propagation of the front.

You will find an example on how to resample and image into an
isotropic image in:


       Insight/Examples/Filtering
          ResampleVolumesToBeIsotropic.cxx


This is done for the typical case of CT and MR where a 3D image
has equal spacing in X and Y, and a much larger spacing in Z.



    Regards,


       Luis




---------------------------
yxliu at fudan.edu.cn wrote:
> Hi,
> 
> The front of itkShapeDetectionLevelSet moves in pixel unit. However, 
> if I have a image with different spacing, how to make the front move 
> evenly in each direction. Must I resample the image firstly?
> 
> Best regards,
> 
> Yixun Liu 
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>