Image analysis – Applications – Target tracking or detecting
Reexamination Certificate
2004-06-02
2008-10-28
Azarian, Seyed (Department: 2624)
Image analysis
Applications
Target tracking or detecting
C382S295000, C244S003150
Reexamination Certificate
active
07444002
ABSTRACT:
A generalized Hough transform is used to acquire and track vehicular targets for missile guidance. This is accomplished by recognizing that most vehicles have silhouettes that may be described as a “rounded rectangle”. The position and shape of such rounded rectangles is described in terms of 5 parameters (xc, yc, a, b, θ) where xc, ycare the center coordinates, a,b are the major and minor axis and Θ is the orientation. The computation of a five dimensional Hough transform on an image including such a target will produce the five parameters that provide the “best fit” rounded rectangle to the target. These parameters are then passed to a missile tracker. This capability can be used to improve track gate handoff from the automatic target recognizer (ATR) to the missile tracker, changing aspect ratios of maneuvering targets, limited lock-on after launch (LOAL), aimpoint designation and fire control system to missile seeker handover.
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Lawrence Nikki J.
Lo Thomas K.
Teku Hagos
Azarian Seyed
Noblitt & Gilmore LLC
Raytheon Company
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