Accession Number:

ADA055070

Title:

Shaded Perspective Images of Terrain

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB

Personal Author(s):

Report Date:

1978-03-01

Pagination or Media Count:

39.0

Abstract:

In order to perform image analysis, one must have a thorough understanding of how images are formed. This memo presents an algorithm that produces shaded perspective images of terrain as a vehicle to understanding the fundamentals of image formation. The image is constructed using standard projection equations along with an efficient hidden-surface removal technique. The image intensity is calculated using the reflectance map, a convenient way of describing the surface reflection as a function of surface gradient. Aside from its use as a tool toward understanding image analysis, the algorithm has several applications of its own, including providing video input to a flight simulator.

Subject Categories:

  • Cartography and Aerial Photography
  • Printing and Graphic Arts

Distribution Statement:

APPROVED FOR PUBLIC RELEASE