Application of nvariant Moment Feature in Digit Verification Code Recognition
ZHAO Jie
Abstract：Network provides tremendous resources and great conveniences to people,at the same time,however,the Internet security is becoming more and more serious. The verification code appears to be the important product of web system security. The in?variant moment method is widely used in the field of object recognition,however,it is not widely used in the field of verification code identification. In this paper,digit verification code is operated as an example. Firstly,the code image to be recognized requires denoising,localization,normalization and other operations. Then the invariant moments of the digit image to be identified are calcu?lated as features. Then features of digit images are used to match in order to obtain recognition result. The Matlab software is used as a running and test platform for program implementation and simulation,and corresponding GUI interface is also constructed. The feasibility of recognition of verification code using moment invariant is illustrated by the experimental results. The application of this fruit strengthens fundamental theory,improves the students'actual operation level and cultivates the students'ability of innovation and combining theory with practice .
Keywords：digit verification codeinvariant momentsrecognition
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 73-75 )