Special topic breakout: ITK

Tutorial Session on ITK (Luis Ibanez)

Topics

• How do you efficiently integrate VTK and ITK with respect to reading and writing images? Is there one class that can be used to hold data sets for both libraries?
• How to do FFTs in ITK?
• What type of coordinate space should be used, voxels vs. real space?
• What type of image formats should be used?
• Is there any standard way to read in coefficient files, i.e., algorithm specific parameters?
• How are XML/MRML files parced in ITK/VTK? We want to know how to use the vtkXMLparser and MRML objects to parse our XML files.
• What are the memory and performance issues with ITK?
• How can we debug memory leaks (or force memory collector to start collecting)?
• How can I access the metadata of each slice in a 3D DICOM volume?

Hands On

• ITK - VTK Integration
  • http://insight-journal.org/dspace/handle/1926/495
• FFT
  • Insight/Examples/Filtering/
    • FFTDirectInverse.cxx
    • FFTDirectInverse2.cxx
    • FFTImageFilter.cxx
    • FFTImageFilterFourierDomainFiltering.cxx
    • http://insight-journal.org/dspace/handle/1926/326
    • http://insight-journal.org/dspace/handle/1926/321
• Voxels vs Real Space
  • Real Space
• File Formats
  • Depends on the purpose...
    • MetaImage
    • Analyze
    • DICOM
    • Nrrd
• Standard for reading coefficients
  • Not really...
  • It is worth to define one
• XML/MRML Parsing
  • Need help from Steve Pieper here (Jim? Alex? Laurent?)
• Memory issues in ITK
  • Many Trade offs
  • Usually trading computation time versus memory
  • ITK only supports shared memory, not distributed memory (MPI)

Participants

• Jeff Hawley
• Kunlin Cao
• Kai Ding
• Xiujuan Geng
• James Harris
• Gary Christensen
• Paul Song
• Jake Nickel
• Nick Kiguta
• Alex. Gouaillard
• Csaba Csoma
• Douglas Alan