Method and device for determining orientation of text

Details Method and device for determining orientation of text Method and device for determining orientation of text

2007-11-20

2007-11-20

Couso, Yon J. (Department: 2624)

Image analysis

Image transformation or preprocessing

Measuring image properties

C382S289000

Reexamination Certificate

active

10460544

ABSTRACT:
A method of determining the orientation of text is disclosed herein. An embodiment of the method may comprise measuring the contrasts associated with an upper edge of the text relative to a background. A first length of the upper edge of text having contrasts that are at least a first preselected value is measured. In addition to measuring the contrasts associated with the upper edge of the text, contrasts associated with a lower edge of the text are measured relative to the background. A second length of the lower edge of text having contrasts that are at least the first preselected value is then measured. The first length is compared to the second length, wherein the text is improperly oriented if the first length is greater than the second length.

REFERENCES:
patent: 5557689 (1996-09-01), Huttenlocher et al.
patent: 5594815 (1997-01-01), Fast et al.
patent: 5854853 (1998-12-01), Wang
patent: 6490376 (2002-12-01), Au et al.
patent: 6574375 (2003-06-01), Cullen et al.

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