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In the existing research on discrete cosine transform (DCT) based Just Noticeable Distortion (JND) methods, most only consider the luminance effect, and the color influence is considered less completely. So these JND models have not positive effects on color image. In this paper, a DCT based JND model for color image is proposed, which incorporates the color contrast sensitivity function, the frequency...
In wireless sensor networks, virtual backbone has been proposed as the routing infrastructure to alleviate the broadcasting storm problem and perform some other tasks such as area monitoring. Previous work in this area has mainly focused on how to construct a small virtual backbone for high efficiency, which is modeled as the minimum Connected Dominating Set (MCDS) problem. However, the nodes in the...
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