Character recognition method

Abstract

The present invention is a character recognition apparatus, which comprises a background discriminating section (13), a non-character line discriminating section (14), a first non-character line removed image creating section (17) that creates a first non-character line removed image, which is an original image from which the non-character line is removed, a first character area discriminating section (15), an enlarged image creating section (16), a second non-character line removed image creating section (17), an interference judgment section (18) that judges whether or not the character and the non-character line interfere with each other in the original image, a character image restoring section (19) that, based on the difference between the color information of character image and the color information of non-character line, restores the character image, a second character area discriminating section (20), and a character recognizing section (21) that digitizes the character area recognized by the second character area discriminating section (20) and recognizes the character, thereby characters written on a color form are recognized at a high accuracy.

Description

technical field [0001] The present invention relates to techniques suitable for processing forms such as in banking institutions; more particularly, to techniques for recognizing characters written in colored forms. Background technique [0002] In banking institutions and the like, an image reading device such as an optical character recognition device (OCR) is used as a device that reads character information written in a form in the form of image data, and then recognizes the image data as characters. By adopting OCR equipment, the efficiency of commercial operations is improved. [0003] In conventional OCR technology, image data on a form is obtained in the form of a monochrome binary image, and then recognized as characters. For example, in the case of a form on which separation lines, guide characters, etc. are printed in predetermined dropout colors such as green and red, the OCR device reads the character recognition target area (filling in characters) in the form ...

AI Technical Summary

Problems solved by technology

Therefore, in a color form on which a dividing line, background, guide character, etc. is printed using a color different from the above-mentioned setting color, there is , or when written characters touch or cross these dividers, background or guide characters, the recognition of written characters is disturbed, resulting in a lower character recognition rate

Furthermore, in the case where a background color or solid coloring such as a halftone dot grid is generated in the character recognition target area, character recognition is disturbed, resulting in a decrease in the character recognition rate

[0009] That is, in the conventional OCR technology, it is difficult to highly accurately recognize characters written in a three-dimensional coloring area using a color different from the set color, or similarly, it is difficult to highly accurately recognize characters written in a color different from the set color, Characters positioned near or across dividers, backgrounds, guide characters, etc.