[AM6-4] Intervisibility

A viewshed is the area that can be “seen” (i.e. it is in the direct line-of-sight) from a specified target location. (Inter) visibility analysis can determine the area visible from a scenic lookout or the area that can be reached by a radar antenna, as well as assess how effectively a road or quarry will be hidden from view.

External resources

• ITC (2013) The Core of GIScience: A Process-based Approach. ITC educational textbook series. 524 pages. ISSN 1567-5777. ISBN 978-90-3653-719-3.

Learning outcomes

• 219 - Define intervisibility
  Define intervisibility
• 220 - Explain the sources and impact of errors that affect intervisibility analyses
  Explain the sources and impact of errors that affect intervisibility analyses
• 221 - Outline an algorithm to determine the viewshed area visible from specific locations on surfaces specified by digital elevation models (DEM)
  Outline an algorithm to determine the viewshed area visible from specific locations on surfaces specified by digital elevation models (DEM)
• 222 - Perform siting analyses using specified visibility, slope, and other surface related constraints
  Perform siting analyses using specified visibility, slope, and other surface related constraints

Self assessment

Outgoing relations

• [AM6-4] Intervisibility subclassof [AM6] Analysis of surfaces

Contributors

• Rob Lemmens
  University of Twente, Faculty of Geo-Information Science and Earth Observation (ITC)
  https://research.utwente.nl/en/persons/rob-lemmens