Determining Attitude of Object from Needle Map Using Extended Gaussian Image.

Abstract

An extended Gaussian image (EGI) is constructed by mapping the surface normals of an object onto the Gaussian sphere. The attitude of an object is greatly constrained by the global distribution of EGI mass over the visible Gaussian hemisphere. Constraints on the viewer direction are derived from the position of the EGI mass center, and from the direction of the EGI inertia axis. The algorithm embodying these constraints and teh EGI mass distribution are implemented using a lookup table. A function for matching an observed EGI with the prototypical EGIs is also proposed. The algorithm determines the attitude of an object successfully both from a synthesized needle map and a real needle map. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1983
Accession Number
ADA131617

Entities

People

  • Katsushi Ikeuchi

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Algorithms
  • Artificial Intelligence
  • Computer Vision
  • Computers
  • Continents
  • Coordinate Systems
  • Ellipsoids
  • Frequency
  • Geometric Forms
  • Hemispheres
  • Line Of Sight
  • Massachusetts
  • Models
  • Object Recognition
  • Orientation (Direction)
  • Two Dimensional

Fields of Study

  • Computer science

Readers

  • Computer Vision.
  • Control Systems Engineering.
  • Positioning, Navigation, and Timing (PNT) Technology.