CHARACTER STRING RECOGNITION METHOD AND DEVICE
First Claim
1. A character string recognition method for recognizing a character string comprising the steps of:
- imaging a character string on a medium to obtain image data;
calculating, in a first step, a first projection data of the image data in a direction of the character string while shifting in a perpendicular direction which is perpendicular to a direction of the character string; and
detecting, in a second step, a position of the character string in the perpendicular direction on a basis of the first projection data which are obtained through the first step;
wherein, in the first step, the image data are divided into a plurality of segments in the direction of the character string and projection in the segment is calculated.
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Abstract
A character string recognition method for recognizing a character string may include a first step in which a first projection data of image data are calculated in a direction of the character string and a second step in which a position of the character string is detected on the basis of the first projection data. In the first step, the image data are divided into a plurality of segments in the direction of the character string and projection in the segment is calculated. The method may further include a third step in which a second projection data in the segment are calculated on the basis of the position of the character string and a fourth step in which a position where the second projection data exceeds a threshold value is detected as a boundary position of a character, and the threshold value may be changed according to pixel number between both ends of the character string.
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Citations
6 Claims
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1. A character string recognition method for recognizing a character string comprising the steps of:
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imaging a character string on a medium to obtain image data; calculating, in a first step, a first projection data of the image data in a direction of the character string while shifting in a perpendicular direction which is perpendicular to a direction of the character string; and detecting, in a second step, a position of the character string in the perpendicular direction on a basis of the first projection data which are obtained through the first step; wherein, in the first step, the image data are divided into a plurality of segments in the direction of the character string and projection in the segment is calculated. - View Dependent Claims (2, 3)
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4. A character string recognition device comprising:
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a character string recognition section for recognizing a character string on a medium by using the following character string recognition method as follows; imaging a character string on a medium to obtain image data; calculating, in a first step, a first projection data of the image data in a direction of the character string while shifting in a perpendicular direction which is perpendicular to a direction of the character string; and detecting, in a second step, a position of the character string in the perpendicular direction on a basis of the first projection data which are obtained through the first step; wherein, in the first step, the image data are divided into a plurality of segments in the direction of the character string and projection in the segment is calculated. - View Dependent Claims (5, 6)
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Specification