Abstract
The “discrete approach” of volume graphics (that is, the one using internal model, which is a set of voxels) has various advantages over surface graphics [1]. In particular, it is helpful for ensuring the use of exact arithmetic and thus avoiding rounding errors. This may also help to raise significantly the computational efficiency of some computer graphics algorithms, in particular, of the ray-tracing algorithm [2]. Based on a detailed analysis of the matter, Kaufman et al. prognosticated that “… volume graphics will develop into a major trend in computer graphics” [1]. For additional arguments and experience supporting the above thesis, the reader is referred to Chapters 4, 6 and 10.
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