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Log-polar mapping-based scale space tracking with adaptive target response

[+] Author Affiliations
Dongdong Li, Gongjian Wen, Yangliu Kuai

National University of Defense Technology, College of Electronic Science and Engineering, Changsha, China

Ximing Zhang

Australian National University, Research School of Engineering, Canberra, Australia

J. Electron. Imaging. 26(3), 033003 (May 08, 2017). doi:10.1117/1.JEI.26.3.033003
History: Received December 22, 2016; Accepted April 13, 2017
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Abstract.  Correlation filter-based tracking has exhibited impressive robustness and accuracy in recent years. Standard correlation filter-based trackers are restricted to translation estimation and equipped with fixed target response. These trackers produce an inferior performance when encountered with a significant scale variation or appearance change. We propose a log-polar mapping-based scale space tracker with an adaptive target response. This tracker transforms the scale variation of the target in the Cartesian space into a shift along the logarithmic axis in the log-polar space. A one-dimensional scale correlation filter is learned online to estimate the shift along the logarithmic axis. With the log-polar representation, scale estimation is achieved accurately without a multiresolution pyramid. To achieve an adaptive target response, a variance of the Gaussian function is computed from the response map and updated online with a learning rate parameter. Our log-polar mapping-based scale correlation filter and adaptive target response can be combined with any correlation filter-based trackers. In addition, the scale correlation filter can be extended to a two-dimensional correlation filter to achieve joint estimation of the scale variation and in-plane rotation. Experiments performed on an OTB50 benchmark demonstrate that our tracker achieves superior performance against state-of-the-art trackers.

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© 2017 SPIE and IS&T

Citation

Dongdong Li ; Gongjian Wen ; Yangliu Kuai and Ximing Zhang
"Log-polar mapping-based scale space tracking with adaptive target response", J. Electron. Imaging. 26(3), 033003 (May 08, 2017). ; http://dx.doi.org/10.1117/1.JEI.26.3.033003


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