Title :
Inverse optimal homography-based visual servo control via an uncalibrated camera
Author :
Johnson, M. ; Hu, G. ; Dupree, K. ; Dixon, W.E.
Author_Institution :
Dept. of Mech. & Aerosp. Eng., Univ. of Florida, Gainesville, FL, USA
Abstract :
A robust inverse optimal adaptive visual servo controller is described that asymptotically regulates a camera´s pose to a desired pose despite uncertainty in the time-varying distance from the camera to the target and parametric uncertainty in the camera calibration matrix. A high gain robust inverse optimal controller asymptotically stabilizes the rotation error system, whereas, an inverse optimal adaptive controller is shown to stabilize the translation error by compensating for the unknown depth and camera calibration parameters. A Lyapunov-based stability analysis is used to examine the stability and an inverse optimal analysis is used to determine the optimality of the developed controller.
Keywords :
Lyapunov methods; adaptive control; asymptotic stability; image sensors; optical control; optimal control; robust control; uncertain systems; visual servoing; Lyapunov based stability analysis; camera calibration matrix; parametric uncertainty; robust inverse optimal adaptive visual servo controller; rotation error system; target uncertainty; time varying distance; uncalibrated camera; Adaptive control; Calibration; Cameras; Control systems; Error correction; Optimal control; Programmable control; Robust control; Servosystems; Uncertainty;
Conference_Titel :
Decision and Control, 2009 held jointly with the 2009 28th Chinese Control Conference. CDC/CCC 2009. Proceedings of the 48th IEEE Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-3871-6
Electronic_ISBN :
0191-2216
DOI :
10.1109/CDC.2009.5399756