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A Semi-blind Digital Watermarking Scheme Based on the Triplet of Significant Wavelet Coefficients
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 Title & Authors
A Semi-blind Digital Watermarking Scheme Based on the Triplet of Significant Wavelet Coefficients
Chu, Hyung-Suk; Batgerel, Ariunzaya; An, Chong-Koo;
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 Abstract
We proposed a semi-blind digital image watermarking technique for copyright protection. The proposed algorithm embedded a binary sequence watermark into significant wavelet coefficients by using a quantization method. The main idea of the quantization method was to quantize a middle coefficient of the triplet of a significant wavelet coefficient according to the watermark`s value. Unlike an existing algorithm, which used a random location table to find a coefficient in which the watermark bit will be embedded: the proposed algorithm used quad-tree decomposition to find a significant wavelet coefficient for embedding. For watermark detection, an original host image was not required. Thanks to the usage of significant wavelet coefficients, the proposed algorithm improved the correlation value, up to 0.43, in comparison with the existing algorithm.
 Keywords
Copyright protection;digital image watermarking;quad-tree algorithm;semi-blind watermarking;
 Language
English
 Cited by
1.
Image watermark detection techniques using quadtrees, Applied Computing and Informatics, 2015, 11, 2, 102  crossref(new windwow)
2.
RAND - STEG: an integer wavelet transform domain digital image random steganography using knight's tour, Security and Communication Networks, 2015, 8, 13, 2374  crossref(new windwow)
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