Isovist fields

A set of isovist measures quantitatively describing when and at what rate different parts of the environment become visible to the observer, which parts are obstructed (how and when), as well as some appreciation of the transformation of isovist shape and size.

Sources

Benedikt, M. L. (1979) To Take Hold of Space: Isovists and Isovist Fields. Environment and Planning B, 6(1) 47-65. pp. 54