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A difference-based text extraction system and method for pattern background printed matter

A text extraction and printed matter technology, applied in the field of image processing, can solve the problems of low recognition rate, limited application, difficult recognition, etc., and achieve the effect of increasing the scope of application, reducing labor costs, and improving work efficiency

Active Publication Date: 2019-05-21
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to directly use mature OCR software to recognize printed matter with various pattern backgrounds or the recognition rate is relatively low, which greatly limits its application

Method used

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  • A difference-based text extraction system and method for pattern background printed matter
  • A difference-based text extraction system and method for pattern background printed matter
  • A difference-based text extraction system and method for pattern background printed matter

Examples

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Embodiment 1

[0048] Taking the text extraction of multiple bills with the same pattern background template as an example by using a system composed of a scanner and a computer, the text extraction system based on the pattern background printed matter will be described in detail. The system includes an input unit, a processing unit and an output unit. .

[0049] The input unit, that is, the scanner, is used to obtain the bill image with a pattern background and recorded text information and the pattern template bill image without text entry, and transmits it to the processing unit;

[0050] The processing unit, that is, the computer, includes a text image extraction module and a text recognition module, and the text image extraction module processes the input bill image with a pattern background and recorded text information and the pattern template bill image using a difference-based image processing method Generate a bill text image without a pattern background, and the text recognition m...

Embodiment 2

[0057] The following is an example of extracting text information in a bill with a smart phone with a camera function, and specifically describes a method for extracting text from pattern background printed matter based on difference. The method includes the following steps:

[0058] (1) Image acquisition: under the control of the processing unit, the input unit acquires the receipt image with pattern background and recorded text information and the pattern template receipt image without text entry, and transmits it to the processing unit;

[0059] Specifically, the smart phone directly acquires the image of a patterned template ticket without text input from the database terminal, and then controls the camera of the mobile phone to acquire images of multiple bills with text information based on the template. After the acquisition, the processing unit directly acquires the bill image information.

[0060] (2) Receipt text extraction: the processing unit processes the input rec...

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Abstract

The invention discloses a system and a method for extracting characters from pattern background printed matter based on difference. The system includes an input unit, a processing unit, and an output unit. The input unit is used to obtain images of printed matter with a pattern background and recorded text information and pattern template images without text entry; the processing unit includes a text image extraction module and a text recognition module. The image extraction module uses difference-based image processing methods to process the input printed matter image and pattern template image to generate a text image without a pattern background, and the text recognition module uses text recognition technology to recognize the obtained text image and extract the area mark. Text information; the output unit is used to output the extracted text information. Compared with the traditional text extraction system, the system of the present invention has strong portability and good expansibility, and has the obvious advantages of not being affected by pattern background and high processing efficiency, and has a good application prospect.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a system and method for extracting text from pattern background printed matter based on difference. Background technique [0002] With the wide application and rapid development of computers and the Internet, people are increasingly digitizing a large number of characters, reports and text management in production and life, and the research on character recognition by computers has become a hot spot. However, at present, manual entry is still the main method for digital application of characters in printed matter with a pattern background, such as bills. Such a method obviously has certain limitations, and the work repetition is simple but the input efficiency is low at the same time. [0003] OCR technology is the abbreviation of Optical Character Recognition (Optical Character Recognition). It converts the text of various bills, newspapers, books, manuscripts and other printed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V30/43G06V30/418G06V30/287
Inventor 孟濬赵夕朦
Owner ZHEJIANG UNIV