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This Volume Rendering Primer provides an example of hardware
accelerated volume rendering on the Silicon Graphics O2 workstation.
vrp2DO2 was written for the express purpose of providing an easy
to understand example of hardware accelerated volume rendering. vrp2DO2
uses hardware accelerated color lookup tables, digital media buffers,
and 2D textures for a high performance solution to volume rendering on
the O2 workstation from Silicon Graphics. For convenience, vrp2DO2 uses
OpenInventor for embedded geometry logic providing a common geometry
file format.
Alternate Data Sets
The following data sets require a system configured with more than 64Mb
of memory.
headData.vrp
color
no color
A single channel medical computed tomography scan
(Similar to the default volume, smallHead, with larger images.)
rgbaData.vrp
color
no color
Loads a four channel computer generated data set.
Menu Options
- File: Open volume data set; Exit program
- Composite: Blend, Max Intensity Projection (IP), Min IP
- Interpolation: Linear, Nearest
- LUT: RGBA, Medical
- Options: Reset View, Performance Test, Show Polygons, Axis
Slider Bars
Assorted sliders may be used to alter the display of
Air, Fat, Tissue, or Bone in Medical mode; or
the gain levels in RGBA mode. Sliders for window
leveling are also provided.
Command Line Options
- -h/-help: Display command line options
- -medical: Load data set in medical mode
- -color: Load data set in color mode
- filename: Supply volume specification file
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