Learning target-focusing convolutional regression model for visual object tracking

摘要

Discriminative correlation filters (DCFs) have been widely used in the tracking community recently. DCFs-based trackers utilize samples generated by circularly shifting from an image patch to train a ridge regression model, and estimate target location using a response map generated by the correlation filters. However, the generated samples produce some negative effects and the response map is vulnerable to noise interference, which degrades tracking performance. In this paper, to solve the aforementioned drawbacks, we propose a target-focusing convolutional regression (CR) model for visual object tracking tasks (called TFCR). This model uses a target-focusing loss function to alleviate the influence of background noise on the response map of the current tracking image frame, which effectively improves the tracking accuracy. In particular, it can effectively balance the disequilibrium of positive and negative samples by reducing some effects of the negative samples that act on the object appearance model. Extensive experimental results illustrate that our TFCR tracker achieves competitive performance compared with state-of-the-art trackers. (C) 2020 Elsevier B.V. All rights reserved.