发明名称 |
Graphically demodulating graphical bar codes without foreknowledge of the original unmodulated base image |
摘要 |
Systems and methods of graphically demodulating a graphical bar code (i.e., an image that contains inconspicuous graphical modulations that encode information embedded in an original base image) are described. The graphical bar code may be graphically demodulated automatically without foreknowledge of the original unmodulated base image, but rather based upon a base image that is derived based upon intrinsic features of the graphical bar code.
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申请公布号 |
US6655592(B2) |
申请公布日期 |
2003.12.02 |
申请号 |
US20010975278 |
申请日期 |
2001.10.10 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
SHAKED DORON;LEVY AVI;YEN JONATHAN |
分类号 |
G06K7/10;G06K7/14;(IPC1-7):G06K7/10 |
主分类号 |
G06K7/10 |
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