摘要 |
PROBLEM TO BE SOLVED: To provide a method which can identify a verification signal later, and identify a carrier by this. SOLUTION: A device has a processor which embeds the verification signal in a carrier signal on real time. The method includes a step of receiving two or more bit input data; a step of forming image data corresponding to a physical object; and a step which processes the image data and encodes the image data at a steganography way according to two or more above-mentioned bit input data, The steganography coding changes a specific pixel of a picture according to two or more bits of two or more above-mentioned bit input data. COPYRIGHT: (C)2005,JPO&NCIPI
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