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Digit recognition method for identification cards

A digital identification and ID card technology, applied in the field of image processing, can solve the problem of high equipment cost

Inactive Publication Date: 2015-06-03
ANHUI TSINGLINK INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But it also has obvious disadvantages, requiring special card reading equipment, and the equipment cost is high

Method used

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  • Digit recognition method for identification cards

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Experimental program
Comparison scheme
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Embodiment Construction

[0094] Below, the present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0095] like figure 1 Shown, a kind of ID card number identification method, comprises the following steps:

[0096] Step 101, obtaining the classifier training file, the specific steps are as follows:

[0097] (1) Load the existing face detection classifier file;

[0098] (2) Based on the harr feature and the adaboost algorithm, train the classifier file on the national emblem of the ID card;

[0099] (3) training ID card number digital template;

[0100] (4) Train the digital template of the validity period of the ID card.

[0101] Step 102, according to the formula [1], transform the color image into a grayscale image, the effect is as follows image 3 As shown in (a) and 3(b):

[0102] Formula 1]:

[0103] f=0.299R+0.587G+0.114B

[0104] Among them, f is the grayscale image value, and R, G, and B are the values ​​of the red, green, ...

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Abstract

The invention provides a digit recognition method for identification cards. The digit recognition method comprises the following steps: acquiring a classifier training file; transforming a color image to be identified into a gray level image; accurately positioning digit element positions of each identification card; accurately segmenting digit characters of each identification card; verifying whether a candidate region is a real digit region of each identification card; carrying out digit recognition on the basis of a nearest neighbor algorithm; judging whether the current digit element is the last group of digit element. According to the digit recognition method provided by the invention, positioning, segmentation and identification of digits on the identification cards are carried out by adopting an image processing technology; the recognition precision is relatively high, no special equipment is needed and the cost is low; the digit recognition method has strong applicability to various environments and can be used for reading information of multiple identification cards simultaneously.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a digital identification method for an ID card. Background technique [0002] The ID card is the only valid document to prove the legal identity of a citizen, and it is a necessary document for citizens to participate in various political, economic, and social activities, such as: entering the event venue, handling bank cards, staying in hotels, taking airplanes and trains, surfing the Internet in Internet cafes, and handling various activities. Qualification certificates, etc. It can be said that identity cards have penetrated into every aspect of our lives. Therefore, how to quickly and accurately read ID card information is becoming more and more important. [0003] At present, our country adopts the second-generation resident ID card, which is characterized by built-in non-contact IC card smart chip, the use of personal color photos, and the use of anti-counterfeit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/20G06K9/32
Inventor 张卡何佳尼秀明焦泽博
Owner ANHUI TSINGLINK INFORMATION TECH
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