TROD: Tracking with occlusion handling and drift correction

We present a tracking framework in which we learn a HOG-based object detector in the first video frame and use this detector to localize the object in subsequent frames. We contribute and improve the tracking on the three following points. First, an occlusion-handling algorithm exploits discriminative information from the detector by dividing the object bounding box into patches and comparing each patch to the object model. Second, a drift-correction technique uses descriptive information of the object by calculating the similarity between the object in the previous frame and its shifted versions in the current frame. Third, a stochastic learning algorithm updates the object detector using single object and single background samples for selected frames only. Experiments with benchmark sequences show that the proposed tracker outperforms state-of-the-art methods on several sequences and has the smallest average location error.