Image processing method and system for OCR image recognition

An image recognition and image processing technology, applied in the field of Chinese character recognition, can solve the problems of deep neural network misrecognition, unsatisfactory test effect, unsatisfactory performance, etc., to improve the accuracy, enhance the anti-interference ability, and improve the recognition accuracy Effect

Pending Publication Date: 2020-08-14
梁华智能科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to relevant market surveys in 2018, many traditional OCR manufacturers in the market did not perform well in the testing of various bills photographed by mobile phones. The field has achieved good results, but due to the large base of Chinese characters, the required training data s

Method used

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  • Image processing method and system for OCR image recognition
  • Image processing method and system for OCR image recognition

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Such as figure 1 As shown, an image processing method for OCR image recognition, including

[0063] S1. Preprocessing the image to be recognized to output image data conforming to preset specifications;

[0064] S2. Reprocessing the preprocessed image to determine the position of the image and perform character positioning on the image;

[0065] S3. Perform character recognition and correction, and perform feedback-type repeated recognition during the process of character recognition and correction to obtain a final OCR recognition result.

[0066] In the preprocessing stage of the image to be recognized, the method of the present invention performs a staged correction with feedback information, and uses multiple rounds of fuzzing to find the minimum value and maximum value to determine the text position range to perform text positioning, so as to provide subsequent text Recognition provides high-quality images, improves recognition accuracy, and helps improve recogni...

Embodiment 2

[0116] Such as figure 2 As shown, the present invention also provides an OCR recognition system, including an image correction module, a character positioning module, a text recognition module and a text correction module; wherein

[0117] An image correction module, configured to perform preprocessing and correction on the acquired image to be recognized to obtain image data conforming to preset specifications;

[0118] The character positioning module is used to process the image data output by the image correction module to determine the image position and perform character positioning on the image;

[0119] The character recognition module is used to perform character recognition on the character data positioned by the character positioning module, and output recognition information to the text correction module and / or output feedback information to the image correction module;

[0120] The text correction module is used to perform character understanding on the characte...

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Abstract

The invention discloses an image processing method for OCR image recognition. The method comprises the following steps: S1, carrying out the preprocessing of a to-be-recognized image, so as to outputimage data meeting a preset specification; S2, reprocessing the preprocessed image to determine the position of the image and perform character positioning on the image; and S3, performing character recognition and correction, and performing feedback type repeated recognition in the character recognition and correction process to obtain a final OCR recognition result. The method and the system aremainly used for identifying machine invoices, various forms and documents; the method is high in recognition precision, high in recognition speed and high in adaptability, the anti-interference capacity in the OCR is enhanced through image preprocessing correction and character positioning, the accuracy of the OCR can be improved through a feedback algorithm (namely a feedback model) based on thecomprehension degree, and the method has high correction capacity for partial information loss and recognition errors. Compared with the recognition effect of the traditional OCR recognition technology, the recognition accuracy is greatly improved.

Description

technical field [0001] The present invention relates to the technical field of Chinese character recognition, specifically, an OCR image recognition method and system. Background technique [0002] OCR (Optical Character Recognition, Optical Character Recognition) technology is to convert the text of various bills, newspapers, books, manuscripts and other printed materials into image information through optical input methods such as scanning, and then use text recognition technology to convert the image information into usable computer input technology. [0003] With the continuous development of image sensors, especially the exponential increase in the number of various mobile phones and professional (such as security) cameras, computer image data is increasing rapidly; but the image quality is relatively lower than that of traditional scanners or various professional cameras; traditional Chinese character OCR technology faces the problem that the quality of the source ima...

Claims

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Application Information

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IPC IPC(8): G06K9/20G06K9/38G06K9/46
CPCG06V10/22G06V10/28G06V10/44G06V30/10
Inventor 宋国梁颜长华
Owner 梁华智能科技(上海)有限公司
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