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Character recognition template matching method, device and text recognition device

A character recognition and template matching technology, applied in the field of character recognition, can solve problems such as poor accuracy, wrong template selection, character recognition errors, etc., to achieve the effect of improving efficiency and accuracy, improving accuracy, and solving difficult distinctions

Active Publication Date: 2022-07-12
BEIJING KUANGSHI TECH CO LTD
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Problems solved by technology

[0004] However, in practical applications, because there may only be slight printing format differences between different cards / certificates / bills, such as VAT electronic ordinary invoices in different regions, there may only be differences in the area spacing of the same invoice area, traditional characters The automatic selection method of the recognition template has the problem of poor accuracy, and it is easy to select the wrong template, which will lead to the problem of character recognition errors

Method used

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  • Character recognition template matching method, device and text recognition device
  • Character recognition template matching method, device and text recognition device
  • Character recognition template matching method, device and text recognition device

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Embodiment Construction

[0065] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0066] The character recognition template matching method provided in this application can be applied to computer equipment. The computer equipment may be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, portable wearable devices, and other terminals, and may also be servers. Exemplarily, when the computer device is a terminal, such as figure 1 As shown, each character recognition template may be pre-stored in the terminal, the terminal may obtain a text image of the text to be recognized, and select the target chara...

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Abstract

The present application relates to a character recognition template matching method, apparatus, computer device, text recognition device and readable storage medium. The method includes: acquiring each character recognition template and the type and position of each character in the text image of the text to be recognized; for each character recognition template, determining a plurality of matching position pairs between the character recognition template and the text image; The matching algorithm calculates the target transformation matrix between the character recognition template and the text image; for each character recognition template, the target transformation matrix corresponding to the character recognition template is used to align the character recognition template and the text image, and calculate the alignment processing. Matching degree of the text line area between the character recognition template and the text image; select the character recognition template with the highest matching degree from each character recognition template as the target character recognition template of the text image. Using the method can improve the accuracy of selecting character recognition templates.

Description

technical field [0001] The present application relates to the technical field of character recognition, and in particular, to a character recognition template matching method, apparatus, computer device, text recognition device and readable storage medium. Background technique [0002] With the deepening of OCR (Optical Character Recognition, Optical Character Recognition) algorithm research, character recognition technology has been widely used in real life; for example, ID card recognition, driving license recognition and so on. [0003] Because the recognition of each designated card / certificate / ticket is often due to different printing formats, most OCR products can only identify cards / certificates / tickets in the corresponding printing format, and different character recognition templates can be used for different printing formats with fixed printing formats. The card / pass / receipt extracts the text of the region of interest. In order to further improve the efficiency of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06V30/148G06K9/62G06V30/418
CPCG06V30/153G06V10/751
Inventor 张婕蕾姚聪
Owner BEIJING KUANGSHI TECH CO LTD
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