²⁵O’Driscoll, James. “Picture Perfect: Using Drone Technology and Photogrammetry Techniques to Map the Western Stone Forts of Ireland.”
Journal of Field Archaeology, 44:2, 126-146. p. 135.
The author writes, "LCP analysis is used to generate the optimum path of travel between two chosen points. To pass between these points involves traversing terrain as well as natural and cultural features that impede movement. These impediments are classified and given a cost in the model, producing a 'cost-surface'; the program then chooses the path that accumulates the least cost connecting each point." (p. 128)