Improved saliency detection based on superpixel clustering and saliency propagation

Authors:
Zhixiang Ren;Yiqun Hu;Liang-Tien Chia;Deepu Rajan
Affiliations:
Nanyang Technological University, Singapore, Singapore;Nanyang Technological University, Singapore, Singapore;Nanyang Technological University, Singapore, Singapore;Nanyang Technological University, Singapore, Singapore
Venue:
Proceedings of the international conference on Multimedia
Year:
2010

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Abstract

Saliency detection is useful for high level applications such as adaptive compression, image retargeting, object recognition, etc. In this paper, we introduce an effective region-based solution for saliency detection. We first use the adaptive mean shift algorithm to extract superpixels from the input image, then apply Gaussian Mixture Model (GMM) to cluster superpixels based on their color similarity, and finally calculate the saliency value for each cluster using compactness metric together with modified PageRank propagation. This solution is able to represent the image in a perceptually meaningful way and is robust to over-segmentation. It highlights salient regions with full resolution, well-defined boundary. Experimental results show that both the adaptive mean shift and the modified PageRank algorithm contribute substantially to the saliency detection result. In addition, the ROC analysis demonstrates that our approach significantly outperforms five existing popular methods.