Green-Noise Diffusion Watermarking Method Enabling to Embed Multiple Information

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  • 情報の多重埋め込みを可能とするグリーンノイズ拡散型電子透かし法
  • ジョウホウ ノ タジュウ ウメコミ オ カノウ ト スル グリーンノイズ カクサンガタ デンシ スカシ ホウ

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Abstract

<p>We propose an invisible block type Digital Watermarking Method which enables to embed multiple information. The main watermark information is embedded by Green-Noise dot pattern, and secondary information is superimposed on it. The Green-Noise pattern is perceptually low visibility for human visual system at the distance of distinct vision, and it represents high resilience for various attacks. The secondary information is embedded with a higher frequency pattern which does not overlap with the spectrum of main information, then this will result in a fragile watermark. Embedded information can be extracted separately by different extractors. The possible applications are copyright protection, detection of tampering, confirmation of original, tracking of illegal outflow etc. Furthermore, the sub-information can be used as a copy-forgery-inhibited pattern and as a marker for block synchronization.</p>

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