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Image Processing Direct Volume Rendering

Image Processing Direct Volume Rendering. Image Processing in SCIRun. Four primary options: Native SCIRun Interpolation Gradient TransformFieldData Teem (Nrrd, Gage, Tend, …) N-dim raster data “Swiss Army Knife” Crop, slice, permute Local measures (via Gage and Tend) ITK

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Image Processing Direct Volume Rendering

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  1. Image ProcessingDirect Volume Rendering

  2. Image Processing in SCIRun • Four primary options: • Native SCIRun • Interpolation • Gradient • TransformFieldData • Teem (Nrrd, Gage, Tend, …) • N-dim raster data “Swiss Army Knife” • Crop, slice, permute • Local measures (via Gage and Tend) • ITK • Similar filtering operations to Teem • Segmentation filters (threshold, confidence-connected, level sets, …) • Registration • MATLAB

  3. Teem • Learn “unu” and “tend” (Verbs of Raster Processing) • Decompose Complex Tasks Into Simple Steps • Accurate Kernels • Derivatives between sample points

  4. Teem in SCIRun

  5. ITK in SCIRun

  6. Direct Volume Rendering • Multi-dimensional Transfer Functions • Boundaries • BioImage • More Examples • SCIRun Volume Rendering Modules

  7. Gordon Kindlmann’s MS Thesis

  8. Boundaries

  9. Boundaries

  10. Boundaries

  11. Boundaries

  12. Boundaries

  13. Tumor Vessel Imaging and Visualization + + + Immobilize. Dose Contrast Optimize Signal : Noise vs Time Discern Contrast Detect Boundaries G. Kindlmann, D. Weinstein, G. Jones, C.R. Johnson, M. Capecchi, and C. Keller. Practical Vessel Imaging by Computed Tomography in Live Transgenic Mouse Models for Human Tumors, Journal of Molecular Imaging, 2005.

  14. Volume Rendering: SIMIAN (Joe Kniss)

  15. Mouse MRI – Al Johnson - Duke

  16. Volume Rendering in SCIRun • Texture Objects • Gradients • Slice Rendering • Axis aligned • Tangent to view direction • Volume Rendering • Slice based • MIP (max operator) • “Direct volume rendering” (over operator)

  17. Volume Rendering in SCIRun

  18. For More Information: • http://www.sci.utah.edu • {dmw,jeroen,dav}@sci.utah.edu

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