Fully Convolutional Online Tracking

04/15/2020
by   Yutao Cui, et al.
0

Discriminative training has turned out to be effective for robust tracking. However, online learning could be simply applied for classification branch, while still remains challenging to adapt to regression branch due to its complex design. In this paper, we present the first fully convolutional online tracking framework (FCOT), with a focus on enabling online learning for both classification and regression branches. Our key contribution is to introduce an anchor-free box regression branch, which unifies the whole tracking pipeline into a simpler fully convolutional network. This unified framework is beneficial to greatly decrease the complexity of tracking system and allows for more efficient training and inference. In addition, thanks to its simplicity, we are able to design a regression model generator (RMG) to perform online optimization of regression branch, making the whole tracking pipeline more effective in handling target deformation during tracking procedure. The proposed FCOT sets a new state-of-the-art results on five benchmarks including GOT-10k, LaSOT, TrackingNet, UAV123 and NFS, and performs on par with the state-of-the-art trackers on OTB100, with a high running speed of 53 FPS. The code and models will be made available at https://github.com/MCG-NJU/FCOT.

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