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Spectral saliency via automatic adaptive amplitude spectrum analysis

[+] Author Affiliations
Xiaodong Wang

Ocean University of China, College of Information Science and Engineering, Department of Computer Science and Technology, No. 238 Songling Road, Qingdao 266100, China

Jialun Dai, Yafei Zhu, Haiyong Zheng

Ocean University of China, College of Information Science and Engineering, Department of Electronic Engineering, No. 238 Songling Road, Qingdao 266100, China

Xiaoyan Qiao

Shandong Institute of Business and Technology, College of Mathematic and Information Science, No. 191 Binhai Road, Yantai 264005, China

J. Electron. Imaging. 25(2), 023020 (Apr 12, 2016). doi:10.1117/1.JEI.25.2.023020
History: Received August 31, 2015; Accepted March 22, 2016
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Abstract.  Suppressing nonsalient patterns by smoothing the amplitude spectrum at an appropriate scale has been shown to effectively detect the visual saliency in the frequency domain. Different filter scales are required for different types of salient objects. We observe that the optimal scale for smoothing amplitude spectrum shares a specific relation with the size of the salient region. Based on this observation and the bottom-up saliency detection characterized by spectrum scale-space analysis for natural images, we propose to detect visual saliency, especially with salient objects of different sizes and locations via automatic adaptive amplitude spectrum analysis. We not only provide a new criterion for automatic optimal scale selection but also reserve the saliency maps corresponding to different salient objects with meaningful saliency information by adaptive weighted combination. The performance of quantitative and qualitative comparisons is evaluated by three different kinds of metrics on the four most widely used datasets and one up-to-date large-scale dataset. The experimental results validate that our method outperforms the existing state-of-the-art saliency models for predicting human eye fixations in terms of accuracy and robustness.

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Citation

Xiaodong Wang ; Jialun Dai ; Yafei Zhu ; Haiyong Zheng and Xiaoyan Qiao
"Spectral saliency via automatic adaptive amplitude spectrum analysis", J. Electron. Imaging. 25(2), 023020 (Apr 12, 2016). ; http://dx.doi.org/10.1117/1.JEI.25.2.023020


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