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Electronic document, genuineness management method for print medium thereof, genuineness management system, program, and program recording medium
Electronic document, genuineness management method for print medium thereof, genuineness management system, program, and program recording medium
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机译:电子文档,用于其打印介质的真实性管理方法,真实性管理系统,程序和程序记录介质
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摘要
A method for managing genuine characteristics of both an electronic document and a print medium comprising: a step for recognizing image data contained in the electronic document; a step for applying an extraction condition of an image feature previously determined and must be considered to the recognized image data to calculate a coordinate set corresponding to a pixel or a set of pixels, constituting the image feature; a step for recognizing at least a coordinate value among coordinate values and pixel color values, corresponding to each of coordinates constituting the coordinate set, and for embedding the recognized coordinate value as a code of a digital watermark into the pixel or the pixel set, constituting the image feature, or into an area in the vicinity; and a step for outputting the electronic document where the digital watermark embedding process operation has been carried out to the print medium.
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