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Method of embedding a machine readable steganographic code
Method of embedding a machine readable steganographic code
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机译:嵌入机器可读密写代码的方法
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摘要
A method of embedding a machine readable steganographic code in a document comprises: generating a variable, multi-bit message; and embedding the message at spatial locations of an image to be printed on the document using elements of the message to modify graphic structures at corresponding spatial locations on the document such that the modifications carry the message in a substantially imperceptible manner.
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