We have already seen many of the benefits of the silhouette
map textures. First of all, we just showed how they are
a space-efficient representation. In addition,
because we only store one point in each cell and the silhouette
map cells are a based on a uniform grid, they offer constant-time
lookup and bounded complexity.
Silhouette maps provide a piecewise linear approximation to the texture function, as opposed to the piecewise-constant function of a standard texture. Thus, they converge quicker to the "true" texture function as resolution increases than the standard texture.
Finally, it's fairly easy to create content either through editing tools or automated processes.