Long-term object tracking combined offline with online learning

Mengjie Hu; Zhenzhong Wei; Guangjun Zhang

doi:10.1117/1.OE.55.4.043103

12 April 2016 Long-term object tracking combined offline with online learning

Mengjie Hu, Zhenzhong Wei, Guangjun Zhang

Author Affiliations +

Funded by: National Natural Science Foundation of China, Natural Science Foundation of Beijing, National Key Scientific Instrument Equipment Development Project

Optical Engineering, Vol. 55, Issue 4, 043103 (April 2016). https://doi.org/10.1117/1.OE.55.4.043103

Abstract

We propose a simple yet effective method for long-term object tracking. Different from the traditional visual tracking method, which mainly depends on frame-to-frame correspondence, we combine high-level semantic information with low-level correspondences. Our framework is formulated in a confidence selection framework, which allows our system to recover from drift and partly deal with occlusion. To summarize, our algorithm can be roughly decomposed into an initialization stage and a tracking stage. In the initialization stage, an offline detector is trained to get the object appearance information at the category level, which is used for detecting the potential target and initializing the tracking stage. The tracking stage consists of three modules: the online tracking module, detection module, and decision module. A pretrained detector is used for maintaining drift of the online tracker, while the online tracker is used for filtering out false positive detections. A confidence selection mechanism is proposed to optimize the object location based on the online tracker and detection. If the target is lost, the pretrained detector is utilized to reinitialize the whole algorithm when the target is relocated. During experiments, we evaluate our method on several challenging video sequences, and it demonstrates huge improvement compared with detection and online tracking only.

Citation Download Citation

Mengjie Hu, Zhenzhong Wei, and Guangjun Zhang "Long-term object tracking combined offline with online learning," Optical Engineering 55(4), 043103 (12 April 2016). https://doi.org/10.1117/1.OE.55.4.043103

Published: 12 April 2016

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