Euclidean Position Estimation of Static Features Using a Moving Uncalibrated Camera
Articles > Article · 2012
Authors: Nitendra Nath, Darren M. Dawson, Enver TATLICIOĞLU
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, Journal Indexed in SCI Expanded, International, 2012, vol 20, pp 480-485
DOI: 10.1109/tcst.2011.2120610
Summary
In this paper, a novel Euclidean position estimation technique using a single uncalibrated camera mounted on amoving platform is developed to asymptotically recover the 3-D Euclidean position of static object features. The position of the moving platform is assumed to be measurable, and a second object with known 3-D Euclidean coordinates relative to the world frame is considered to be available a priori. To account for the unknown camera calibration parameters and to estimate the unknown 3-D Euclidean coordinates, an adaptive least squares estimation strategy is employed based on prediction error formulations and a Lyapunov-type stability analysis. The developed estimator is shown to recover the 3-D Euclidean position of the unknown object features despite the lack of knowledge of the camera calibration parameters. Numerical simulation results along with experimental results are presented to illustrate the effectiveness of the proposed algorithm.