Method and apparatus for determination of text orientation
First Claim
1. Method for determining orientation of an image, said method comprising the steps of:
- obtaining a plurality of text characters from at least a portion of said image;
determining a direction in which each of said text characters opens; and
determining the orientation of said image based on said directions in which said plurality of text characters open.
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Accused Products
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.
36 Citations
42 Claims
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1. Method for determining orientation of an image, said method comprising the steps of:
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obtaining a plurality of text characters from at least a portion of said image; determining a direction in which each of said text characters opens; and determining the orientation of said image based on said directions in which said plurality of text characters open. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A computer readable medium containing an executable program for determining the orientation of an image, where the program performs the steps of:
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obtaining a plurality of text characters from at least a portion of said image; determining a direction in which each of said text characters opens; and determining the orientation of said image based on said directions in which said plurality of text characters open. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification