Sparse Bayesian learning for efficient visual tracking

This paper extends the use of statistical learning algorithms for object localization. It has been shown that object recognizers using kernel-SVMs can be elegantly adapted to localization by means of spatial perturbation of the SVM. While this SVM applies to each frame of a video independently of ot...

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Détails bibliographiques
Publié dans:IEEE transactions on pattern analysis and machine intelligence. - 1979. - 27(2005), 8 vom: 07. Aug., Seite 1292-304
Auteur principal: Williams, Oliver (Auteur)
Autres auteurs: Blake, Andrew, Cipolla, Roberto
Format: Article
Langue:English
Publié: 2005
Accès à la collection:IEEE transactions on pattern analysis and machine intelligence
Sujets:Comparative Study Evaluation Study Journal Article
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245 1 0 |a Sparse Bayesian learning for efficient visual tracking 
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520 |a This paper extends the use of statistical learning algorithms for object localization. It has been shown that object recognizers using kernel-SVMs can be elegantly adapted to localization by means of spatial perturbation of the SVM. While this SVM applies to each frame of a video independently of other frames, the benefits of temporal fusion of data are well-known. This is addressed here by using a fully probabilistic Relevance Vector Machine (RVM) to generate observations with Gaussian distributions that can be fused over time. Rather than adapting a recognizer, we build a displacement expert which directly estimates displacement from the target region. An object detector is used in tandem, for object verification, providing the capability for automatic initialization and recovery. This approach is demonstrated in real-time tracking systems where the sparsity of the RVM means that only a fraction of CPU time is required to track at frame rate. An experimental evaluation compares this approach to the state of the art showing it to be a viable method for long-term region tracking 
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700 1 |a Cipolla, Roberto  |e verfasserin  |4 aut 
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