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Natural scene certificate image character recognition method based on deep learning

A text recognition, natural scene technology, applied in neural learning methods, character recognition, character and pattern recognition, etc., can solve the problems of harsh shooting environment, single recognition scene, low recognition accuracy, etc., to improve text recognition accuracy. Effect

Active Publication Date: 2019-12-03
XIDIAN UNIV
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, and propose a natural scene document image character recognition method based on deep learning, which solves the problem that the existing document image character recognition method has strict requirements on the shooting environment, and the recognition scene is single. The problem of low recognition accuracy

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  • Natural scene certificate image character recognition method based on deep learning
  • Natural scene certificate image character recognition method based on deep learning
  • Natural scene certificate image character recognition method based on deep learning

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Embodiment Construction

[0045] Attached below figure 1 The implementation steps of the present invention will be further described.

[0046] Step 1. Construct an image feature extraction module.

[0047] Build a 24-layer feature extraction module, and its structure is in order: first convolutional layer→first pooling layer→second convolutional layer→third convolutional layer→fourth convolutional layer→jump connection layer→fifth volume Build layer → sixth convolution layer → seventh convolution layer → jump connection layer → second pooling layer → eighth convolution layer → ninth convolution layer → tenth convolution layer → jump connection layer → eleventh Convolutional layer → Twelfth convolutional layer → Thirteenth convolutional layer → Jump connection layer → Third pooling layer → Fourteenth convolutional layer → Fifteenth convolutional layer → Sixteenth convolutional layer → Jump Connection layer.

[0048] Set the number of convolution kernels in the fourth convolutional layer, seventh convolution...

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Abstract

The invention discloses a natural scene certificate image character recognition method based on deep learning. The method comprises the following steps: (1) constructing an image feature extraction module; (2) constructing a character foreground prediction module; (3) constructing a text area positioning module; (4) forming a character positioning network; (5) constructing a character feature extraction module; (6) forming a character recognition network; (7) constructing a text positioning data set; (8) constructing a character recognition data set; (9) training a character positioning network; (10) training a character recognition network; and (11) identifying characters in the certificate image. According to the method, the problems that an existing certificate image character recognition technology has strict requirements on a shooting environment and is low in recognition accuracy in a complex scene are solved, so that the characters in the certificate image can be accurately recognized in any natural scene.

Description

Technical field [0001] The present invention belongs to the technical field of image character processing, and further relates to a method for character recognition in natural scene certificate images based on deep learning in the technical field of image character recognition. The present invention can be used to identify the characters in documents (such as ID cards, business licenses, driving licenses, driving licenses) taken in natural scenes (such as indoor office environments, street scenes). Background technique [0002] Recognizing the text in the ID image is very important in many scenarios. For example, in remote account opening, online lending, payment verification and other scenarios in financial scenarios, we need to identify the name, address, ID number and other information of the user’s ID In order to check whether the person’s certificate is integrated; the law enforcement of the industrial and commercial department often needs to identify the business license’s ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/32G06K9/34G06N3/04G06N3/08
CPCG06N3/08G06V30/413G06V20/62G06V30/158G06V30/10G06N3/045
Inventor 王晓甜吴嘉诚林亚静石光明齐飞林杰
Owner XIDIAN UNIV
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