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Discussion

The RenderList-based algorithm for surface display has been designed for providing real-time frame rates for viewing medical data within a Java-based diagnostic application. By using purely software-based rendering, the algorithm achieves similar performance on different hardware platforms. By exploiting the advantages of explicit surface extraction and shear/warp projection, high frame rates are achieved at low memory cost. The only non-interactive step of the visualization process is the extraction of surface voxels during the preprocessing step (1-2 seconds for a typical $256^3$ data set). Surface extraction has to be repeated each time a new iso-value is specified.

Compared with a polygonal representation of the boundary surfaces, this approach preserves the full accuracy of the data set at much lower memory cost, and allows interactive rendering on low-end hardware.



Lukas Mroz, May 2001,
mailto:mroz@cg.tuwien.ac.at.