Accession Number:

ADA101422

Title:

Shaded Relief Images for Cartographic Applications.

Descriptive Note:

Research note,

Corporate Author:

ARMY ENGINEER TOPOGRAPHIC LABS FORT BELVOIR VA

Personal Author(s):

Report Date:

1981-04-01

Pagination or Media Count:

196.0

Abstract:

The computer generation of shaded relief images for cartographic applications is analyzed. The geometric theory of image formation is presented in some detail, and is used to motivate the discussion of image simulation algorithms developed at the U.S. Army Engineer Topographic Laboratories ETL. Several algorithms devised to address specific cartographic problems, such as variable sun angle, haze simulation, and relief contour algorithms, are also discussed. The successful implementation of these algorithms is described. Appendixes summarizing details of the theory are included, as are a Software Users Guide, sample images, and listings of the ETL software. Author

Subject Categories:

  • Cartography and Aerial Photography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE