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

reportActive / Technical Report | Accession Number: ADA131617 | Open PDF

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

Author(s):
Ikeuchi, Katsushi
Author Organization(s):
MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB
Descriptive Note:
Memorandum rept.,
Pagination:
0028

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AI-M-714
Contract/Grant Number(s):
N00014-77-C-0389, N00014-80-C-0505
 Subject Terms
Joint Capability Areas:
JCA_6.1.2_Wireless Transmission; JCA_6.1_Information Transport; JCA_6_Net Centric; JCA_5_Command and Control; JCA_5.1.1_Establish and Maintain Unity of Effort with Mission Partners; JCA_5.1_Organize
Modernization Areas:
Fully Networked C3
Communities of Interest:
Air Platforms
Descriptor(s):
*Image processing, *Map projection, *Three dimensional, *Spheres, *Computer aided design, Shape, Artificial intelligence, Visual perception, Computations, Pattern making, Pattern recognition, Robotics
Field(s)/Group(s):
Cartography and Aerial Photography
Keyword(s):
*EGI(Extended Gaussian Image), *Computer vision, Gaussian sphere
Report Date:
1983 Apr 01