Abstract-Kernel-based mean shift (MS) trackers have proven to be a promising alternative to stochastic particle filtering trackers. Despite its popularity, MS trackers have two fundamental drawbacks: (1) The template model can only be built from a single image; (2) It is difficult to adaptively update the template model. In this work we generalize the plain MS trackers and attempt to overcome these two limitations. It is well known that modeling and maintaining a representation of a target object is an important component of a successful visual tracker. However, little work has been done on building a robust template model for kernel-based MS tracking. In contrast to building a template from a single frame, we train a robust object representation model from a large amount of data. Tracking is viewed as a binary classification problem, and a discriminative classification rule is learned to distinguish between the object and background. We adopt a support vector machine (SVM) for training. The tracker is then implemented by maximizing the classification score. An iterative optimization scheme very similar to MS is derived for this purpose. Compared with the plain MS tracker, it is now much easier to incorporate on-line template adaptation to cope with inherent changes during the course of tracking. To this end, a sophisticated on-line support vector machine is used. We demonstrate successful localization and tracking on various data sets.
Shen et al. REF propose a generalized Kernel-based mean shift tracker whose template model can be built from a single image and adaptively updated during tracking.
Generalized Kernel-based Visual Tracking
IEEE Transactions on Circuits and Systems for Video Technology, 2010
Computer Science