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9 May 2000 Smearing-desmearing transformation and the application to digital watermark
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The technology of a digital watermarking that can embed copyright information in valuable images has come to be paid attention. Therefore, we propose a new digital watermarking method using the Smearing-Desmearing transformation and show the algorithm. The Smearing-Desmearing transformation is a new transformation that watermark information is spread on the whole of an image. In our method, we can easily calculate how much the method degrades the quality of the watermarked image from embedded watermark energy.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Takuya Okahisa and Kenji Ohue "Smearing-desmearing transformation and the application to digital watermark", Proc. SPIE 3971, Security and Watermarking of Multimedia Contents II, (9 May 2000);

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