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Saliency-Based Compressive Sampling for Image Signals
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DOI：10.1109/LSP.2010.2080673.png)
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Abstract
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Compressive sampling is a novel framework in signal acquisition and reconstruction, which achieves sub-Nyquist sampling by exploiting the sparse nature of most signals of interest. In this letter, we propose a saliency-based compressive sampling scheme for image signals. The key idea is to exploit the saliency information of images, and allocate more sensing resources to salient regions but fewer to nonsalient regions. The scheme takes human visual attention into consideration because human vision would pay more attention to salient regions. Simulation results on natural images show that the proposed scheme improves the reconstructed image quality considerably compared to the case when saliency information is not used.
Keywords:
Visual saliency
discrete cosine transform
compressive sampling
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