Detection of highlighted regions

Details Detection of highlighted regions Detection of highlighted regions

1991-08-28

1993-12-21

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

358453, 382 48, 382 55, G06K 900

Patent

active

052727645

ABSTRACT:
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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