发明名称 VERIFICATION/AUTHENTICATION CODING METHOD AND DEVICE
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
申请公布号 JP2005151561(A) 申请公布日期 2005.06.09
申请号 JP20040326916 申请日期 2004.11.10
申请人 DIGIMARC CORP 发明人 RHOADS GEOFFREY B
分类号 G06T1/00;G07C9/00;G07D7/00;G07D7/12;G07F7/08;G07F7/10;G07F7/12;G07F17/16;G09C1/00;G09C5/00;G10L19/00;G11B20/00;G11B20/10;H04B1/66;H04N1/00;H04N1/32;H04N1/387;H04N5/91;H04N5/913;H04N7/08;H04N7/081;H04N7/26;(IPC1-7):H04N1/387 主分类号 G06T1/00
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