A method for recognizing Chinese character images based on a four-corner number dictionary and related components

By using a Chinese character image recognition method based on the four-corner code dictionary, and leveraging skeleton information and the four-corner code character lookup method, Chinese characters can be quickly recognized. This solves the problems of long recognition time and high computational power consumption in existing technologies, and achieves efficient Chinese character recognition.

CN116682114BActive Publication Date: 2026-02-10XIAMEN TENGWEISHENG TESTING TECH CO LTD
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Patent Information

Application Number
CN202310704855.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-14
Publication Date
2026-02-10
Estimated Expiration
2043-06-14

AI Technical Summary

Technical Problem

Existing machine learning-based Chinese character image recognition methods suffer from problems such as long recognition time and high computational cost.

Method used

A Chinese character image recognition method based on the four-corner code dictionary is adopted. The method preprocesses the Chinese character image, extracts the skeleton information and performs four-corner code character recognition. The four-corner code dictionary is called to obtain the set of homophone Chinese characters, and the Chinese characters are quickly identified by confidence prediction and feature information comparison.

Benefits of technology

It achieves fast and efficient Chinese character recognition, reduces computing resource consumption, and improves recognition efficiency.

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Abstract

The application belongs to the technical field of Chinese character image recognition, and particularly discloses a Chinese character image recognition method based on a four-corner number dictionary and related components. The method comprises the following steps: pre-processing an input Chinese character image to obtain skeleton information of a Chinese character to be recognized; performing four-corner number dictionary recognition on the stroke shape of the skeleton information to obtain corresponding four-corner numbers; calling the four-corner number dictionary to read homograph Chinese characters with the same four-corner numbers to obtain a homograph Chinese character set; when the number of Chinese characters in the homograph Chinese character set is one, outputting the unique Chinese character as a recognition result; when the number of Chinese characters in the homograph Chinese character set is within a first preset range, outputting a Chinese character with the highest confidence in the homograph Chinese character set as the recognition result; and when the number of Chinese characters in the homograph Chinese character set is within a second preset range, eliminating Chinese characters with inconsistent features in the homograph Chinese character set until the number of Chinese characters in the homograph Chinese character set is one or within the first preset range. The application has the advantage of quickly finding a correctly recognized target Chinese character from a homograph set of the four-corner number dictionary.
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