发明名称 |
Selectively accented serpentine halftone patterns for embedding human readable information in images |
摘要 |
The two symmetrical halves of halftone shapes that have a central axis of symmetry are selectively intensity modulated for accenting human readable information that is embedded in halftone patterns that are composed of halftone cells having fill patterns conforming to such shapes. This human readable information is defined by clustering these halftone fill patterns so that their accented portions visually blend to form alphanumeric character shapes.
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申请公布号 |
US6092732(A) |
申请公布日期 |
2000.07.25 |
申请号 |
US19980015257 |
申请日期 |
1998.01.29 |
申请人 |
XEROX CORPORATION |
发明人 |
CURRY, DOUGLAS N. |
分类号 |
H04N1/387;G06K19/06;G06T1/00;(IPC1-7):G06K19/06 |
主分类号 |
H04N1/387 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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