Christina's World, Wyeth
This activity belongs to the GeoGebra book Voronoi Paintings.
In this painting, the figures of the girl and the houses are outlined against the land and the sky. Thus, we obtain four isolated shapes that determine the Voronoi diagram of Figure 14. Note that in all cases, we are considering the frame of the painting completely unrelated to both the negative space and the positive space, as if the painting were floating in the infinite plane.
Figure 14: The Voronoi diagram divides this painting into four regions
Author of the activity and GeoGebra construction: Rafael Losada.