[Insight-users] levelset alters output voxel size occasionally

[rashedk]

Hi All, 

I am using the threshold level-set implementation given in: 
Examples/Segmentation/ThresholdSegmentationLevelSetImageFilter.cxx

I have noticed that *occasionally* for some images, the output of the filter
has different voxel size/dimensions from the input speed image. The result
of this is that the segmented image appears to be displaced when overlaid on
top of the speed image. 

For example, when I check the headers for the speed image I get this: 
Voxel dimensions are 0.911458 0.911458 1.3
Voxel type is short 

But, the output of the levelset filter has these dimensions (seems like it
has rounded them off??) : 
Voxel dimensions are 1 1 1
Voxel type is unsigned char

How can I avoid this from happening? I want the output to retain the voxel
dimension/size of the input. 

Thanks, 
Rashed karim 
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