The tracking algorithm is an important tool for motion analysis in computer vision. A new car tracking algorithm is proposed which is based on a new clipping technique in the field of adaptive filter algorithms. The uncertainty and occlusion of vehicles increase the noise in vehicle tracking in a traffic scene, so the new clipping technique can control noise in prediction of vehicle positions. The authors present a new quantised version of the LMS, namely the QX-LMS algorithm, which has a better tracking capability in comparison with the clipped LMS (CLMS) and the LMS and also involves less computation. The threshold parameter of the QX-LMS algorithm causes controllability and the increase of tracking and convergence properties, whereas the CLMS and LMS algorithms do not have these capabilities. The QX-LMS algorithm is used for estimation of a noisy chirp signal, for system identification and in car tracking applications. Simulation results for noisy chirp signal detection show that this algorithm yields a considerable error reduction in comparison to the LMS and CLMS algorithms. The proposed algorithm, in tracking some 77 vehicles in different traffic scenes, shows a reduction of the tracking error relative to the LMS and CLMS algorithms.
Car tracking by quantised input LMS, QX-LMS algorithm in traffic scenes
2006-02-01
9 pages
Aufsatz (Zeitschrift)
Englisch
vehicle tracking , system identification , motion analysis , image motion analysis , least mean squares methods , computer vision , adaptive filters , noisy chirp signal estimation , car tracking algorithm , clipping technique , traffic scenes , quantised input LMS , road traffic , noisy chirp signal detection , image denoising , adaptive filter algorithms , automobiles , quantisation (signal)
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