Digital watermark embedding apparatus and digital watermark detecting apparatus

Digital watermark embedding apparatus and digital watermark detecting apparatus

A plurality of background texture patterns each of which includes a region not having a dot and having a feature different from those of the other background texture patterns, are combined, and information is embedded in a background region of a document image. Then, a mathematical-morphology-based...

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Hauptverfasser: Kuraki, Kensuke, Nakagata, Shohei, Ishii, Hideaki, Masui, Motoo, Anan, Taizo
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Sprache:eng
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creator Kuraki, Kensuke
Nakagata, Shohei
Ishii, Hideaki
Masui, Motoo
Anan, Taizo
description A plurality of background texture patterns each of which includes a region not having a dot and having a feature different from those of the other background texture patterns, are combined, and information is embedded in a background region of a document image. Then, a mathematical-morphology-based conversion is performed on the document image, and thereby a feature of a region not having a dot in each of the background texture patterns is extracted in order to identify the embedded information.
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title Digital watermark embedding apparatus and digital watermark detecting apparatus
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