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Improving the robustness of watermark in withstanding attacks has been one of the main research objectives in digital image watermarking. In this paper we propose a novel region-adaptive watermarking technique that can provide improvements in both robustness and visual quality of the watermarks when compared to the original, non-region-adaptive, embedding technique. The proposed technique, which is...
Improving the robustness of watermark in withstanding attacks has been one of the main research objectives in digital image watermarking. In this paper we propose a novel region-adaptive watermarking technique that can provide improvements in both robustness and visual quality of the watermarks when compared to the original, non-region-adaptive, embedding technique. The proposed technique, which is...
In this article it is presented a reconfigurable transmission scheme for the lossy image transmission over congested wireless sensor networks (WSNs). This transmission scheme is based on the quad-tree algorithm for compressing each frame before transmitting it over the network. The proposed architecture: a) performs buffered transmission of quad-tree decomposed packets of an image frame over the WSN,...
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