Character segmentation method and apparatus
First Claim
1. A method of character segmentation for character recognition, comprising:
- first binarizing a gray scale image using a general threshold method to generate a first image;
second binarizing the gray scale image using an edge detection method to generate a second image;
determining a character row region of the second image by using horizontal projection analysis;
generating an isolated character row image of the first image using the character row region of the second image; and
generating individual character images from the isolated character row image.
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Accused Products
Abstract
An electronic device (1100) and a method for character segmentation (100) includes an image analyzer (1110) that generates individual character images. The image analyzer binarizes (115) a gray scale image (200) of a horizontal row of characters by using a general threshold method to generate a first image (300). The image analyzer also binarizes (120) the gray scale image using an edge detection method to generate a second image (405). The image analyzer determines (125) a character row region (425) of the second image by using horizontal projection analysis. The image analyzer isolates (130) the character row region of the first image using the character row region of the second image. The image analyzer uses the character row region to generate (135) individual character images. The electronic device may include an image capture device (1105) and a character recognition program (1115).
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Citations
8 Claims
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1. A method of character segmentation for character recognition, comprising:
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first binarizing a gray scale image using a general threshold method to generate a first image; second binarizing the gray scale image using an edge detection method to generate a second image; determining a character row region of the second image by using horizontal projection analysis; generating an isolated character row image of the first image using the character row region of the second image; and generating individual character images from the isolated character row image. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A means for performing character segmentation for character recognition, comprising:
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first means for binarizing a gray scale image using a general threshold method to generate a first image; second means for binarizing the gray scale image using an edge detection method to generate a second image; means for determining a character row region of the second image by using horizontal projection analysis; means for isolating the character row region of the first image using the character row region of the second image; and means for using the isolated character row region to generate individual character images.
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8. An electronic device, comprising:
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image capture means that generate a gray scale image that includes a horizontal row of characters; image analyzer means that generate individual character images, comprising first means for binarizing a gray scale image of the horizontal row of characters by using a general threshold method to generate a first image, second means for binarizing the gray scale image using an edge detection method to generate a second image, means for determining a character row region of the second image by using horizontal projection analysis, means for isolating the character row region of the first image by using the character row region of the second image, and means for using the isolated character row region to generate individual character images; and character recognition means for recognizing the individual character images.
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Specification