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Character extracting method

A character and equipment technology, applied in the fields of character extraction and equipment and character separation, which can solve problems such as complex problems, performance deterioration, and misjudgment of character positions.

Inactive Publication Date: 2005-03-09
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, if you simply use light and dark images, the problem will become more complicated, including specifying the character area, delaying the processing speed, and causing serious consequences such as misjudging the character position, and making the performance worse

Method used

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Embodiment Construction

[0023] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0024] In addition, in the following description, it is assumed that the smaller the density value of the pixel, the darker the pixel; the larger the density value, the whiter the pixel. (Original text may be wrong)

[0025] figure 1 Is an enlarged image of the input document before it is fed into the scanner. Graphics "1" and "2" are written close to each other; however, they are not connected because of the blank space between them. Now, let us consider the case of reading such a document image with a scanner.

[0026] The scanner divides the document image into figure 2 For the grid shown, take the average density of each rectangle and enter this average density value as the density of each pixel corresponding to the rectangle. image 3 Shown is an example of a light and dark image input from a scanner. In this example, the light and shade imag...

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PUM

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Abstract

In a character recognition device for the character recognition based on a light and shade image of an input character image, the light and shade image of the input character image is separated into a character area and a background area using at least density values of pixels and then, the above-mentioned character area is separated again into more than two areas using at least density values of pixels and based on an area information obtained by this re-separation, the characters are separated to individual characters.

Description

technical field [0001] The present invention relates to a character extraction method for a character recognition device that can extract connected characters into a single character at a time, and the character recognition device recognizes characters based on, for example, input light and dark character images. Background technique [0002] Generally, character recognition technology is broadly classified into character image input, character line extraction, character extraction, and character recognition. [0003] Usually, the connected characters are extracted after binary processing is performed on the input character image. The input character image is divided into a character area and a background area. At this time, a plurality of characters are extracted into one character area in a connected state. The prior art acquires the structural separation point and the analyzed separation point according to the shape of the connected characters, and separates the connect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06V30/10
CPCG06K2209/01G06K9/342G06V30/10G06V30/15G06F18/00
Inventor 赤木琢磨
Owner KK TOSHIBA