In order to locate tumors, the doctors analyse a stack of parallel scanned images of the brains of their patients, which often requires re-slicing this volume along another axis. Since the spectrum of a scanner often extends beyond the color spectrum perceptible to the human eye, the first technique (Window Leveling) applied to the data is to scale and offset (level) them to the interesting range. When time allows a preliminary indexing (Archiving) of the data, then color tables are also used. The data size represents the most drastic constraints of Medical Imaging Applications: 256x256x124 or 512x512x64 16-bit datasets are fairly common, which often exceed the texture memory capacity. The dataset has then to be divided (real-time Tiling) into separate tiles, which are processed individually: the results are assembled in the final view. This demonstration prototype was developed with the collaboration of G.E. Medical Systems, in France.
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The windowLevel program has been compiled and tested
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- IRIX 6.2 |
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It is also expected to compile and run on the
following systems, but has NOT BEEN TESTED: |
- Reality Engine (5.3 with OpenGL Extensions Patch 918 (successor to 154)) |
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* * * The windowLevel binary included on v6.1 of the Developer Toolbox was generated on an IRIX 6.2 Indigo² IMPACT system. In order to recompile you must install the GLUT 3.0 software, included on this v6.1 Toolbox, onto your own system. The inst images or tardist file can be found in
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