Method and apparatus for detecting vertical direction of documen

Details Method and apparatus for detecting vertical direction of documen Method and apparatus for detecting vertical direction of documen

1996-01-23

1999-07-13

Lee, Thomas D.

Image analysis

Image transformation or preprocessing

Measuring image properties

382170, 382198, G06K 936

Patent

active

059237902

ABSTRACT:
The present invention provides a method and an apparatus for reliably detecting the upside and downside vertical direction of an image, such as characters on a document. The method involves judging the upside and downside vertical direction of the characters in each line, and specifying the upside and downside vertical direction of the characters on the entire image on the basis of the vertical directions detected line by line.

REFERENCES:
patent: 5359677 (1994-10-01), Katsurada et al.
patent: 5475492 (1995-12-01), Yukawa
patent: 5668898 (1997-09-01), Tatsuta

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