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Renminbi serial number automatic recognition method

An automatic identification, RMB technology, applied in the field of automatic identification of RMB prefixes, can solve problems such as slow identification speed, improve the identification accuracy, ensure the accuracy of the identification results, and reduce the amount of calculation.

Inactive Publication Date: 2017-09-22
ZHEJIANG UNIV
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AI Technical Summary

Problems solved by technology

Although the traditional serial number recognition method is accurate, the recognition speed is slow, and the problem of stains and similar characters cannot be solved well

Method used

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  • Renminbi serial number automatic recognition method
  • Renminbi serial number automatic recognition method
  • Renminbi serial number automatic recognition method

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Embodiment Construction

[0046] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0047] The concrete realization of the RMB serial number automatic identification method of the present invention is as follows figure 1 shown, including:

[0048] (1) Edge recognition of RMB banknotes.

[0049]After reading the grayscale image from the imaging module of the banknote detector, the image is first preprocessed by median filtering, expansion, and OTSU binarization, and then the contour recognition algorithm is run to obtain the contour of the banknote, and the quadrilateral approximation method is used to obtain the maximum The outline is used as the final banknote outline, specifically as figure 2 Shown:

[0050] 1.1 Median filtering: Median filtering is performed on the read grayscale images to reduce the influence of noise introduced ...

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Abstract

The invention discloses a Renminbi serial number automatic recognition method. According to the method, on the basis of profound understanding of the layout of Renminbi image structures, a set of algorithms which can accurately identify the edge, orientation and serial number area of the Renminbi is designed; the speed of serial number recognition is greatly improved through efficient algorithms and carefully-designed processing steps and by means of the functions of a mature OCR (optical character recognition) engine; on the basis of the scientific statistical analysis of the recognition effect of the OCR (optical character recognition) engine, the understanding of a serial number pattern and the comprehensive utilization of the advantages of a plurality of engines, the mature open-source OCR engine is applied to the specific field of serial number recognition; the accuracy of serial number recognition is ensured; and extremely high recognition speed is provided.

Description

technical field [0001] The invention belongs to the technical field of financial OCR (Optical Character Recognition, optical character recognition), and in particular relates to an automatic recognition method for RMB serial numbers. Background technique [0002] OCR is the process of using optical technology to scan text and characters, obtaining image information of text and characters, using various pattern recognition algorithms to analyze the morphological characteristics of text, and obtaining text and layout feature information. With the gradual maturity of OCR technology, OCR technology has begun to be used in various fields, such as document recognition, license plate recognition, bill recognition, bank card recognition, document recognition, etc., in banking, insurance, finance, logistics, auditing, taxation, customs, public security , border inspection and many other industries have formed mature OCR products. The application of OCR technology reduces the configu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07D7/00G07D7/20
CPCG07D7/2008G07D7/2016
Inventor 尹建伟赵景晨岑超邓水光李莹吴健吴朝晖
Owner ZHEJIANG UNIV
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