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An Entity of Type : prov:Entity, within Data Space : webisa.webdatacommons.org associated with source dataset(s)

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  • The present invention relates to a watermark information embedment device capable of adding secret information to a document image, the secret information being prepared in the form of other than characters, and also relates to a watermark information detection device capable of detecting the secret information from a print document in which the secret information is embedded
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