The traditional art gallery problem sets up a region and guards with some notion of visibility, and asks for the minimum number of guards that need to be placed to see the entire region.Has anyone ever looked at art gallery variants where the visibility region is instead defined by a pair of guards. For example, one formulation might be that a point is covered if there's a pair of guards whose minimum bounding disk covers it ?
Art gallery variants with pairwise visibility?
reference request;cg.comp geom