Method and system for identifying hollow adhesion verification codes

Abstract

The invention relates to a method and system for identifying hollow adhesion verification codes. Image preprocessing is carried out on original images of hollow adhesion verification codes to form grayscale images one by one after conversion; interference part removing and blank area removing are carried out successively; and position correction processing, single character cutting processing, dimension reduction processing, and identification based on a data model are carried out. Therefore, the method and system not only are suitable for identification of simple hollow adhesion verificationcodes only having character hollow and adhesion characteristics but also are suitable for identification of complex hollow adhesion verification codes having characteristics of character size inconsistency, interference line existence, many character colors, and character rotation. The method and system can be applied to identification of simple hollow adhesion verification codes and complex hollow adhesion verification codes; the identification accuracy and the recognition efficiency of the hollow adhesion verification codes are improved; and the user passing efficiency and experience are improved.

Description

technical field [0001] The invention relates to the field of computers, in particular to a recognition method and system for a hollow-bonded verification code. Background technique [0002] The verification code is a public automatic program that distinguishes whether the user is a computer or a human. It can prevent malicious cracking of passwords, swiping tickets, flooding forums, etc., and effectively prevents a hacker from continuously logging in to a specific registered user with a specific program brute force cracking method. try. With the development of Internet technology, the use of verification codes to achieve verification and access has been used by many websites, so the identification of verification codes has widely appeared in the public eye. Among them, the recognition of hollow glued verification codes is more difficult than the recognition of traditional solid verification codes, because an important feature of hollow verification codes is to use outlines ...

AI Technical Summary

Problems solved by technology

Therefore, the use of hollow glued characters to realize verification and recognition is more conducive to accurate recognition by the human eye. However, since hollow glued characters have not been widely used in the identification of verification codes, the machine's recognition system for hollow glued characters is not yet mature. That is, the machine has not been able to accurately recognize the hollow glued characters. Often when the characters entered by the user are consistent with the hollow glued characters, the machine will make a misjudgment, causing the user to re-enter the verification characters, affecting the user's traffic efficiency and experience

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