Direct Volume Visualization
Abstract
In direct volume visualization, the volumetric dataset is directly represented visually without generating an intermediate representation. This is performed by somehow projecting the volumetric information onto the viewing plane. In this chapter we explain the major strategies and variations that can be employed for this projection.
We will focus on the theoretical aspects of direct volume visualization, in particular the employed physical model and the mathematical foundation of the resulting volume rendering equation. Volume rendering relies on numerical approximations of this integral. Volume rendering approaches differ in the processing order of the pipeline that evaluates the volume rendering ...
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