发明名称 |
Detection of highlighted regions |
摘要 |
A method and apparatus for detection of highlighted regions of a document. A document containing highlighted regions is scanned using a gray scale scanner. Morphology and threshold reduction techniques are used to separate highlighted and non-highlighted portions of the document. Having separated the highlighted and non-highlighted portions, optical character recognition (OCR) techniques can then be used to extract text from the highlighted regions.
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申请公布号 |
US5272764(A) |
申请公布日期 |
1993.12.21 |
申请号 |
US19910751263 |
申请日期 |
1991.08.28 |
申请人 |
XEROX CORPORATION |
发明人 |
BLOOMBERG, DAN S.;SANG, JR., HENRY W.;DASARI, LAKSHMI |
分类号 |
G06K9/20;G06T5/00;H04N1/38;(IPC1-7):G06K9/00 |
主分类号 |
G06K9/20 |
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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