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Proceedings Paper

Estimation of target range and orientation from video images for tactical unattended sensor applications
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Paper Abstract

Under National Ground Intelligence Center (NGIC) sponsorship, BBN Technologies (BBN) has developed a physical model and a software system to estimate the range and orientation of a target from video images and known information about the target and video camera. This capability may be exploited in an unattended ground sensors field to enhance situation assessment for subsequent response decisions. The target range and orientation estimation system (Video Range Finder) is based on an interactive procedure enabling the user to associate identifiable features of the video image with physical components of the target. These points define a three-dimensional polyhedron in the coordinate frame of the target, which is projected onto the two-dimensional polygon image at the focal plane of the video camera. The associated projection equations are non-linear with respect to the azimuth, elevation, and viewing-axis rotation angles of the video camera, therefore, a solution for these angles is obtained numerically. The calculated angles are subsequently used in the estimation of the target range. The paper discusses the physical model, describes the algorithm for estimating target range and orientation, and demonstrates its application using both simulated and real objects.

Paper Details

Date Published: 7 August 2002
PDF: 7 pages
Proc. SPIE 4743, Unattended Ground Sensor Technologies and Applications IV, (7 August 2002); doi: 10.1117/12.447879
Show Author Affiliations
Anthony G. Galaitsis, BBN Technologies (United States)

Published in SPIE Proceedings Vol. 4743:
Unattended Ground Sensor Technologies and Applications IV
Edward M. Carapezza, Editor(s)

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