Method and apparatus for determination of text orientation

Details Method and apparatus for determination of text orientation Method and apparatus for determination of text orientation

2007-08-24

2010-02-02

Mehta, Bhavesh M (Department: 2624)

Image analysis

Image transformation or preprocessing

Measuring image properties

C382S190000, C382S275000

Reexamination Certificate

active

07657120

ABSTRACT:
The present invention relates to a method for determining the orientation of text, so that the text can be correctly read. In one embodiment, the method analyzes the “open” portions of text characters to determine in which direction the open portions face. By determining the respective densities of characters opening in each direction (e.g., right or left), the method can establish in which direction the text as a whole is orientated. The present invention may be adapted for use in automated mail processing, to determine the orientation of checks in automated teller machine envelopes, or the orientation of scanned or copied documents, or documents sent via facsimile, or to determine the orientation of digital photographs that include text (e.g., road signs, business cards, driver's licenses, etc.), among other applications. A fast, substantially automatic determination of text orientation according to the present invention will reduce the labor expense and processing delay required for manual orientation.

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