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Microclimates in many wildland cultural heritage sites are not under surveillance up to now, due to the lack of power supply and network access. However, accurate microclimate data in cultural heritage sites are very important for research and conservation. In this paper, we present a wireless sensor system for long-term microclimate monitoring in wildland cultural heritage sites, and its deployment...
The unstable nature of wireless communication makes it hard to maintain a reliable network organization in Wireless Sensor Networks (WSNs). Therefore, network organization repair scheme is highly required for reliability. Because of the high energy efficiency requirement, the network organization repair scheme for WSNs differs from that for traditional networks. However, existing WSN network organization...
In this paper, a robust FGS video transmission scheme is proposed for streaming video over bandwidth-constrained packet loss channel, which aims to reducing both the overall distortion and quality fluctuation at the same time. We first use channel budget and packet loss property to determine the bits of enhancement layers that should be allocated per frame. Then unequal loss protection (ULP) using...
Breast cancer is one of the most common malignant diseases among women, it is important to give patients early diagnose and treatment. Mammography has become the most effective way for detection of breast cancer, and it is sensitive to clustered micro-calcification which is the key characteristic of early breast tumors. In this paper, we propose a method of detection micro-calcification. We first...
In this paper, we propose a fast and reliable impulse noise filter for highly corrupted images. The median filter was once the most popular nonlinear filter for removing impulse noise because of its good denoising power and computational efficiency, but the performance are unsatisfactory when noise ratio is high. So many algorithms have been proposed to improve the filter result. Recently, A switching...
A main challenge of medical image enhancement is to solve conflicts between noise resistance and detail sharpening. A multi-scale enhancement method based on fuzzy logic (MEMBFL) is presented in this paper. The proposed method can prevent noise increasing during the sharpening of the image details. With this method, the original image is filtered by the hybrid low pass filter which is designed according...
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