Figure 8
From: Mechanical response of dense pedestrian crowds to the crossing of intruders

Modified Voronoi tesselation used to compute local densities. The border \( {\mathcal B} \) of the convex hull of the group of pedestrians (blue dots) is represented as a red line and delimits the modified Voronoi cells of border points. Besides, the ridges of the initial Voronoi cells that extend out of the convex hull (dotted yellow lines) are replaced by the dashed black lines. The solid and dashed segments in black (together with the convex hull) delimit the final Voronoi cells.