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Identity card number recognition method and device based on natural scene

A technology of ID number and natural scene, applied in the field of ID number identification method and device, can solve the problem of low efficiency of manual input of ID number and the like

Inactive Publication Date: 2016-11-23
信帧机器人技术(北京)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Embodiments of the present invention provide a method and device for identifying ID card numbers based on natural scenes, to solve the current problems of low efficiency of manual input of ID card numbers

Method used

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  • Identity card number recognition method and device based on natural scene
  • Identity card number recognition method and device based on natural scene

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Experimental program
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Embodiment 1

[0016] Embodiment 1 provides a kind of such as figure 1 Shown is an overall architecture diagram of an ID card number recognition method and device based on a natural scene.

[0017] Step 101, image acquisition, this step needs to use hardware devices to collect images of ID cards, hardware devices can be mobile phones, pads, ordinary cameras, robots with cameras, and the collected images need to completely collect the front information of ID cards, which cannot There are cases where half of the ID card is photographed, and the tilt angle is within plus or minus 15°.

[0018] Step 102, image preprocessing, using the Hough detection method to detect the upper and lower boundaries of the ID card, correcting the tilt of the ID card according to the angle of the line, and binarizing the corrected angle with a fixed threshold, and binarizing the binarized image Search the Unicom area, find the Unicom area, merge the Unicom area, find the area with a large number of characters, loc...

Embodiment 2

[0022] Embodiment 2 provides a kind of such as figure 2 The flow chart of the image preprocessing shown is an overall architecture diagram.

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Abstract

The invention discloses an identity card number recognition method and a device based on a natural scene. An identity card picture which is distinct and can enable the identity card number to be recognized by a human eye is acquired through a front-end hardware device, and the hardware device can be a mobile phone, a camera, a scanner and the like; and through technical means such as image processing and mode recognition, automatic extraction and recognition are carried out on the identity card number. The technical scheme is mainly as follows: the captured picture is firstly subjected to image pre-processing, wherein the pre-processing comprises noise removal, image gray level conversion, identity card boundary extraction, and image binarization; connection region searching is carried out on the binary image after pre-processing, and certain candidate regions with dense characters are determined to be the regions of the identity card number; local binarization processing is then carried out on each candidate region, the position of each character is acquired, and character segmentation on a gray level image is carried out; and finally, a deep learning method is used for recognizing each segmented character, discrimination is then carried out according to the arrangement sequence of the identity card number, the width and the height of each character and the character recognition confidence, and a character sequence with the highest confidence level is selected as the final recognition result and is outputted.

Description

technical field [0001] The present invention relates to information processing technology, image processing, pattern recognition, mobile Internet, and in particular to an identity number recognition method and device based on natural scenes. Background technique [0002] At present, with the development of pattern recognition and image processing technology, more and more attention has been paid to the identification number recognition technology based on image processing, which can be applied in banking business to collect the ID card of the customer handling the business, and after obtaining the picture Automatically extract ID number information, shortening the time for manual entry; it can also be applied to other scenarios that require identity authentication. The hardware device for collecting images can be a mobile phone, pad, ordinary camera, or a robot with a camera, etc. Contents of the invention [0003] Embodiments of the present invention provide a method and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
Inventor 不公告发明人
Owner 信帧机器人技术(北京)有限公司
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