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- W2103469462 abstract "The particle filtering framework has revolutionized probabilistic tracking of objects in a video sequence. In this framework, the proposal density can be any density as long as its support includes that of the posterior. However, in practice, the number of samples is finite and consequently the choice of the proposal is crucial to the effectiveness of the tracking. The CONDENSATION filter uses the transition prior as the proposal density. We propose in this paper a motion-based proposal. We use adaptive block matching (ABM) as the motion estimation technique. The benefits of this model are two fold. It increases the sampling efficiency and handles abrupt motion changes. Analytically, we derive a Kullback-Leibler (KL)-based performance measure and show that the motion proposal is superior to the proposal of the CONDENSATION filter. Our experiments are applied to head tracking. Finally, we report promising tracking results in complex environments." @default.
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- W2103469462 date "2006-10-11" @default.
- W2103469462 modified "2023-10-05" @default.
- W2103469462 title "An Online Motion-Based Particle Filter for Head Tracking Applications" @default.
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- W2103469462 doi "https://doi.org/10.1109/icassp.2005.1415382" @default.
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