Post-processing judgment and correction method for character plain code recognition result of aero-engine blade

An aero-engine and recognition result technology, which is applied in the field of character recognition, can solve the problems of inability to cover input characters with combinations of letters and numbers, easy to fall into local solutions, single character objects, etc., to achieve automatic recognition and information tracking, reduce multiple The burden of sub-checking and satisfying the effect of high accuracy

Pending Publication Date: 2022-05-20
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

This invention only performs iterative deletion of characters containing Chinese characters (such as stomach food liquid), and then performs post-processing operations. One is that the character object is

Method used

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  • Post-processing judgment and correction method for character plain code recognition result of aero-engine blade
  • Post-processing judgment and correction method for character plain code recognition result of aero-engine blade
  • Post-processing judgment and correction method for character plain code recognition result of aero-engine blade

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[0145] Select any kind of OCR character recognition method, such as Baidu OCR, Tesseract-OCR, etc. to identify the leaf clear-code characters, and use this as the input of the post-processing judgment and correction method of the present invention;

[0146] The reference data information input for matching includes sample library, historical library, irregular character library, symbol library and similar character mapping relationship;

[0147] (1) Enter the OCR clear code character result S, such as image 3 One of the blade clear-code character recognition results in the example, the following judgments are made:

[0148] Traverse the character content z' in S, where the character content z' refers to a single character or multiple consecutive characters in S:

[0149] ·if It means that S conforms to the aero-engine blade clear code string encoding specification, and jumps to step (2) to continue the judgment;

[0150] If z′∈z, it means that S conta...

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Abstract

The invention discloses a post-processing judgment correction method for an aero-engine blade character plain code recognition result, which comprises the following steps: firstly, inputting a blade plain code OCR character recognition result, referring to an existing sample library containing all plain code characters and a historical library of recognized output characters, judging the OCR character recognition result through the post-processing judgment correction method, and if the result is correct, judging the OCR character recognition result through the post-processing judgment correction method; if not, outputting the original character as a correct result, and not performing correction processing; and if not, correcting the input OCR character recognition result according to the judgment and correction method provided by the invention, and finally outputting a correct character result belonging to the sample library. Through the application of the method, the judgment and correction of the automatic OCR recognition result of the leaf plain code characters can be realized, the accuracy of OCR plain code character recognition can be improved, the manual searching and checking process of a large batch of leaf materials can be reduced, and further the informatization and automatic management of the leaf materials in storage, logistics and assembly sites can be realized on the basis.

Description

technical field [0001] The invention belongs to the technical field of character recognition, and in particular relates to a method for post-processing judgment and correction of character plain code recognition results. Background technique [0002] Aeroengine blade materials are large quantities of parts with highly similar shapes. The selection and assembly process can only be manually identified and selected through the unique recessed characters engraved on the tenons of the blades. In the field of artificial intelligence, OCR character recognition technology is widely used in the field of text recognition, which recognizes valid characters by collecting images containing characters. However, the recognition of the recessed engraved characters on the surface of the aero-engine blade is easily affected by metal reflections and environmental interference, resulting in misrecognition, which in turn leads to unqualified component balance testing after assembly, and multiple...

Claims

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Application Information

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IPC IPC(8): G06V30/146
CPCY02P90/30
Inventor 王淑侠张杰何卫平李江红魏兵钊曹志伟
Owner NORTHWESTERN POLYTECHNICAL UNIV
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