Abstract
In path based filtering the usual state space is replaced by a finite dimensional approximation to the path space of the system. The information in the system model and the measurements is summarised by a probability density function on the approximating space. Path based filters are well suited to the inference of system behaviour over time. They have the advantage that the predicted or estimated paths are always physically plausible, in that they are realisations of the system model. The filter is applied to the model based tracking of cars. Measurements of the position and orientation of a moving car are obtained by fitting a wire frame model to a sequence of video images. The filter estimates the velocity, acceleration and steering angle of the car. Experiments show that the steering angle can be estimated after tracking for 1 s and the acceleration after 2 s.
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© 1997 Springer-Verlag Berlin Heidelberg
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Maybank, S.J., Worrall, A.D. (1997). Path prediction and classification based on non-linear filtering. In: Sommer, G., Koenderink, J.J. (eds) Algebraic Frames for the Perception-Action Cycle. AFPAC 1997. Lecture Notes in Computer Science, vol 1315. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0017876
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DOI: https://doi.org/10.1007/BFb0017876
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