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Method for detecting Chinese words direction

A detection method and text technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problem of complex detection of Chinese text direction

Inactive Publication Date: 2008-12-03
COMPAL ELECTRONICS INC
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] Compared with English, which has only 26 letters, the detection of the direction of Chinese characters is much more complicated

Method used

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  • Method for detecting Chinese words direction
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  • Method for detecting Chinese words direction

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Embodiment Construction

[0029] The detection method of the Chinese character direction in the prior art needs to calculate the characters of the whole document to judge the character direction. The present invention proposes a method for detecting the direction of Chinese characters, which detects the direction of characters by using the pixel projection amount of Chinese characters in the vertical or horizontal direction, and can determine the direction of a single Chinese character without calculating the characters of the entire document, that is, Can know the text direction in the document.

[0030] Observing the font structure of Chinese characters, we can find that many Chinese characters are composed of left part and right part. And the left part is often a radical of a character, therefore, when a Chinese character is in an upright state with a vertical dividing line, this dividing line is often near the left side of the character. For example, the word [证] is divided into the side of the wo...

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Abstract

The invention discloses a detection method for the direction of Chinese characters, comprising the steps that: firstly, the number of scotoma pixel contained in each straight row of a character image is calculated; then a first coordinate value, a second coordinate value and a third coordinate value are screened, wherein, the vertical projection quantity of the first coordinate value corresponding to the second coordinate value is a maximum and a second largest value, and the third coordinate value is between the first coordinate value and the second coordinate value; when the third coordinate value is positioned at the left side of the center of the character image, the direction of the Chinese character is judged to be an upright direction, and when the third coordinate value is positioned at the right side of the center of the character image, the direction of the Chinese character is judged to be an inverted direction.

Description

technical field [0001] The invention relates to a method for detecting the direction of Chinese characters, in particular to a method for detecting the direction of Chinese characters by using the projection amount of Chinese characters in the vertical or horizontal direction. Background technique [0002] At present, Optical Character Recognition (OCR) has been widely used, for example, to establish large-scale document databases and digitize corporate documents. Using optical character recognition technology, paper documents can be converted into text images, and then converted into digital text, so as to convert a large amount of document data into editable text files, saving a lot of manual typing time. [0003] To recognize paper documents using optical character recognition technology, it is usually necessary to scan the paper documents into images first, then separate the text in the image, and cut or merge the text. Then compare and recognize the text. [0004] Whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/72G06K9/20
Inventor 蔡文瀚黄自达
Owner COMPAL ELECTRONICS INC