Technical Presentation Leonardo Rocha
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Technical PresentationLeonardo Rocha
Medical ImagingMasters degree in
MotivationMedical Visualization (e.g. Endoscopy)
Medical Diagnostics (e.g. Microscopy)
Radiological Sciences (e.g. Radiology)
Nuclear Medicine (e.g . Positron Emission Tomography)
3D Medical Data
Visualization
Fuzzy ( Î [0,1], e 1)Binary ( Î {0,1}, e = 1)
Boundary Classification
Mrot = Mwarp x Mshear
Shear-Warp
Shear 3D Warp 2D
Mrot = Mwarp x Mshear
Shear-Warp
Shear 3D Warp 2D
Shear-Warp Rendering
Principal axis
Run-length code along principal axis
Shell Rendering
Principal axis
Run-length encoding along x axis only
Principal axis
Run-length encoding along x axis onlyLook-up table for y-z axes
Shear-Warp Shell Rendering
Experiments
Results• Binary boundary:• SRSW is 30% faster than SR• SRSW is 35% faster than SWR• SRSW uses 29% of the memory used by SWR
• Fuzzy boundary:• SRSW is 52% faster than SR• SRSW is 10% slower than SWR• SRSW uses 65% of the memory used by SWR
Image qualityBinary bondary: splatting errors due fixed axis ordering
SR SRSW
Image quality
SR SRSW
Fuzzy bondary: opacity accumulation errors due fixed axis ordering