Isosurface distortion

[KNgo]

I'm trying to extract a surface of a mouse skeleton from DICOM files for 3D printing, but there seems to be some sort of distortion -- the isosurface seems to be either stretched along the z-axis or compacted along the x-axis. I've used the exact same process with rat skulls before, and I've never encountered this problem before. Any information would be appreciated.

 

 

[Charl Botha]

This usually means that the spacing in your DICOM (actually the per-slice IPP or image position patient) is incorrectly set. I would try and figure out (by taking a look at the acquisition part of the pipeline) why this is happening, and / or fix the z-spacing by using a vtkImageChangeInformation.

On Friday, June 22, 2012, KNgo wrote:

I'm trying to extract a surface of a mouse skeleton from DICOM files for 3D printing, but there seems to be some sort of distortion -- the isosurface seems to be either stretched along the z-axis or compacted along the x-axis. I've used the exact same process with rat skulls before, and I've never encountered this problem before. Any information would be appreciated.

--
dr. charl p. botha :: http://graphics.tudelft.nl/CharlBotha
work: c.p....@tudelft.nl personal: cpb...@cpbotha.net

[KNgo]

How do you connect the vtkImageChangeInformation module? I'm using the set-up from your STL surface extraction video.