Partially Host Adaptive Quantization Index Modulation Watermarking in a Baseband –Spread Transform Domain
In order to reduce the impact of watermark embedding on the perceptual fidelity of themarked signal, watermarking systems process the generated watermark to match it to the localproperties of the underlying host signal prior to embedding. However, this adaptation processcould distort the watermark,...
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| Format: | Article |
| Language: | English |
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College of Engineering, University of Basrah
2008-01-01
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| Series: | Iraqi Journal for Electrical and Electronic Engineering |
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| Online Access: | http://ijeee.org/volums/volume4/IJEEE4PDF/paper3.pdf |
| Summary: | In order to reduce the impact of watermark embedding on the perceptual fidelity of themarked signal, watermarking systems process the generated watermark to match it to the localproperties of the underlying host signal prior to embedding. However, this adaptation processcould distort the watermark, affecting its robustness and information content. In this paper, anew watermark coding technique is proposed, that enables the application of some marknondistortinghost-adaptation processing, where the intensity of the watermark could beredistributed according to the local properties of the underlying host without changing theway of interpreting the watermark to be embedded. This completely eliminates the need toequalize adaptation distortions prior to decoding, and hence, to pass any side informationabout the adaptation processing to the decoder, too. |
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| ISSN: | 1814-5892 2078-6069 |