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Identity card character segmentation method

A character segmentation and ID card technology, which is applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems of high cost and achieve the effect of low cost and accurate character segmentation

Active Publication Date: 2018-01-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

A powerful ID card reader also means that its cost is huge, and the demand for a cheap ID card recognition system is imminent.

Method used

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  • Identity card character segmentation method

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Embodiment Construction

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the implementation methods and accompanying drawings.

[0023] see figure 1 , the processing system of the present invention includes a collection tank, a camera unit and an image processing unit, wherein the size of the collection tank for placing the ID card is equivalent to the size of the ID card, and the camera unit is located below the collection tank for collecting the image of the placed ID card. image, and send the collected ID card image to the image processing unit for character segmentation processing. For example, the collection tank is set as a platform with a transparent area with a slightly sunken area. The size of the sunken area is roughly equivalent to the size of the ID card; a camera and a fill light are set under the sunken area. The upper and lower boundaries of the a...

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Abstract

The invention discloses an identity card character segmentation method. The method comprises the following steps: firstly collecting an identity card image by a special device, processing black fontsin the identity card image in a binarization processing mode in which a binarization threshold changes with the underpainting of the image so as to obtain a binary image, and rotating the reverse binary image for 180 degrees to obtain a positive binary image; then performing horizontal projection on the binary image, obtaining upper and lower boundaries of an identity card number part based on thehorizontal projection result, performing vertical projection on the identity card number image, and obtaining left and right boundaries of identity card numbers and the position of the each number based on the vertical projection; and obtaining left and right boundaries of a Chinese character part based on the corresponding position relation between the Chinese character part and the number partso as to obtain the segmentation of a single character of name, nation and house address parts based on the horizontal projection and the vertical projection of the Chinese character part. The identity card character segmentation method is applied to the character segmentation of extracted identity information, and is accurate in segmentation and low in cost.

Description

technical field [0001] The invention belongs to the field of digital image processing, and mainly relates to the fields of ID card identification and OCR. Background technique [0002] The second-generation ID card is an important document to confirm the citizenship of the People's Republic of China. Through the ID card information, one can uniquely find a person in real life. Entry and exit on many occasions require registration of the identity card information of the party concerned. [0003] The ID card information reader is a mature and reliable device for reading ID card information. It can judge the authenticity of the second-generation ID card. After reading the information, it can display all the information in the ID card, such as the name, ID number, and photo. A powerful ID card reader also means that its cost is huge, and the demand for a cheap ID card recognition system is imminent. Contents of the invention [0004] The purpose of the present invention is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/34G06K9/38G06K9/32
Inventor 解梅李佩伦秦方
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA