Next: 1 Introduction
Higher isn't Necessarily Better: Visibility Algorithms and
Experiments
Wm Randolph Franklin
Rensselær Polytechnic Institute
Troy, NY, 12180 USA
Phone: +1 (518) 276--6077
Fax: +1 (518) 276--6261
Internet: wrfATecse.rpi.edu
Clark K Ray
Department of Electrical Engineering and Computer Science
U.S. Military Academy
West Point, NY 10996 USA
Internet: dc6119@eecs1.eecs.usma.edu
Abstract:
We describe several fast programs to compute viewsheds and
weighted visibility indices for observation points in a raster
terrain. These programs explore various tradeoffs between speed
and accuracy. We have analyzed many cells of data; there is no
strong correlation between a point's elevation and its weighted
visibility index. However, the, very few, high visibility points
tend to characterize features of the terrain. This work can form
a basis for automatically locating observers jointly to cover a
terrain region of interest.
Keywords: visibility, viewshed, line-of-sight.
Wm Randolph Franklin
Tue Mar 28 14:17:21 EST 1995