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Character positioning method and system for certificate document

A positioning method and text technology, applied in the field of computer image processing and deep learning, can solve the problem of low text positioning accuracy and achieve the effect of improving positioning accuracy

Active Publication Date: 2021-02-12
南京星云数字技术有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a text positioning method for license documents to solve the problem of low positioning accuracy of text in existing license document recognition systems

Method used

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  • Character positioning method and system for certificate document
  • Character positioning method and system for certificate document
  • Character positioning method and system for certificate document

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Embodiment Construction

[0045] The present invention will be described in further detail below in conjunction with the accompanying drawings, but it is not intended to limit the present invention.

[0046] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0047] refer to Figure 1 ~ Figure 3 As shown, the embodiment of the present invention discloses a text positioning method of a license document, the method comprising:

[0048] Step S1: Scale the image img0 to be tested to 2 to the Nth power, preferably 32 times, and calculate the scaling scale of the image img0 to be tested;

[0049] Step S2, input the scaled image to obtain the image img_scaled;

[0050] Step S3 , performing image preprocessing on the input image, wherein the preprocessing includes: edge detection, rotation and straightening; qu...

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Abstract

The invention discloses a character positioning method and system for a certificate document, and the method comprises the steps of inputting a to-be-detected image to a deep learning model, and outputting a spliced and fused feature map; performing image difference operation on the feature maps marked by different indexes to obtain a feature map difference; carrying out binarization calculation on the difference value of the feature map; performing connected domain marking on the image according to a binarization calculation result; and traversing all connected domains, converting the connected domains into positioning coordinates, and outputting a coordinate set. According to the invention, automatic identification of license document characters is realized, the positioning precision ishigh, and character detection in any direction is supported.

Description

technical field [0001] The invention relates to the technical field of computer image processing and deep learning, in particular to a text positioning method and system for license documents. Background technique [0002] In financial business, it often involves the review and inspection of license documents. For example, when an enterprise applies for a loan from a financial institution, it needs to provide the business license of the enterprise and send it to the financial institution in the form of the original, a copy, or a scanned copy. The credit approval personnel of the financial institution will verify the authenticity of the enterprise certificate based on the text information , uniqueness, and legitimacy, and accurately enter the information into the business system of the financial institution to carry out the subsequent risk control management process. [0003] In the industry, there are two ways to carry out this kind of license review and entry work. One is...

Claims

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Application Information

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IPC IPC(8): G06K9/32G06K9/38G06K9/34
CPCG06V20/62G06V30/153G06V10/28
Inventor 王元
Owner 南京星云数字技术有限公司
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