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Piracy in the presence of internet and computers proves to be a biggest jolt to the concerned industry. To reduce the piracy and duplicity of the images, digital watermarking technique is having an edge over the other available techniques. In this paper, a blind digital watermarking algorithm is presented which is robust enough to resist the watermark against the attacks. The algorithm exploits the...
Compared with wavelet, tight frame let has good time-frequency analysis ability. In this paper, we propose anew digital image watermarking algorithm based on tight frame let. In our method, the host image is firstly decomposed by frame let. Secondly, the watermark image is transformed by Arnold scrambling and then is embedded in the lowest frequency sub band of the host image. Experimental results...
Featured in bad robustness, the single watermarking algorithm of GIS vector data can't meet people's need in some aspects. Yet, the multiple watermarking can embed several watermarks in the host in one way or several ways, making up the disadvantages of the traditional watermarking to some degree. However, many multiple watermarking studies are focused on the multimedia, and fewer on GIS vector data...
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