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|a 10.1109/83.977879
|2 doi
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|a eng
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|a Kutter, Martin
|e verfasserin
|4 aut
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| 245 |
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|a A vision-based masking model for spread-spectrum image watermarking
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|c 2002
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
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|2 rdacarrier
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| 500 |
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|a Date Completed 20.05.2010
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|a Date Revised 04.02.2008
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a We present a perceptual model for hiding a spread-spectrum watermark of variable amplitude and density in an image. The model takes into account the sensitivity and masking behavior of the human visual system by means of a local isotropic contrast measure and a masking model. We compare the insertion of this watermark in luminance images and in the blue channel of color images. We also evaluate the robustness of such a watermark with respect to its embedding density. Our results show that this approach facilitates the insertion of a more robust watermark while preserving the visual quality of the original. Furthermore, we demonstrate that the maximum watermark density generally does not provide the best detection performance
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|a Journal Article
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|a Winkler, Stefan
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t IEEE transactions on image processing : a publication of the IEEE Signal Processing Society
|d 1992
|g 11(2002), 1 vom: 15., Seite 16-25
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|g day:15
|g pages:16-25
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|u http://dx.doi.org/10.1109/83.977879
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