Verification code identification method, device, terminal and storage medium
An identification method and technology of an identification device, which are applied in the field of Internet security, can solve the problems of low identification accuracy of verification codes and inability to segment pasted characters well, and achieve the effect of improving identification accuracy and enhancing identification ability.
Active Publication Date: 2021-03-23
SHENZHEN INST OF ADVANCED TECH
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[0004] The present invention provides a verification code recognition method, device, terminal and storage medium to solve the problem that the pasted characters cannot be well divided in the existing verification code recognition process, resulting in low accuracy of verification code recognition
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[0059] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0060] figure 1 An embodiment of the verification code identification method of the present invention is shown. Such as figure 1 As shown, in this embodiment, the verification code identification method includes the following steps:
[0061] In step S1, the verification code image is obtained, and the verification code image is preprocessed.
[0062] Specifically, after the verification code image is acquired, the verification code image is preprocessed to remove noise in the verification code image and reduce the influence of noise on verification code recognition.
[0063] In some embodiments, ...
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The invention discloses a verification code identification method, device, terminal and storage medium. The method includes: acquiring a verification code image, and preprocessing the verification code image; cutting the verification code image according to a preset cutting range to obtain a plurality of character images to be recognized; Recognition; calculate the recognition accuracy of each character image to be recognized; when the recognition accuracy does not exceed the preset threshold, adjust the preset cutting range and cut again, and then train the preset recognition model according to the cutting results until the recognition accuracy exceeds Preset threshold. In the verification code recognition process of the present invention, the verification code that is difficult to identify is re-cut and the preset recognition model is trained, so that the recognition ability of the preset recognition model is stronger and the recognition accuracy of the preset recognition model is improved.
Description
technical field [0001] The invention relates to the technical field of Internet security, in particular to a verification code identification method, device, terminal and storage medium. Background technique [0002] In human-computer intelligent interaction, especially allowing machines to simulate human behaviors to intelligently identify verification codes is an important technology. There are many types of captchas, and image-based captchas are one of the most widely used techniques. Then let the machine automatically recognize the image verification code is one of the basic technologies to complete the machine simulation. The image-based verification code recognition generally needs to cut the characters, and then use machine learning or deep learning methods to classify the characters. The accuracy of character segmentation directly affects the quality of the final prediction result. In practice, verification codes are randomly generated, and verification codes obtai...
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IPC IPC(8): G06K9/34G06K9/00
CPCG06V10/26
Inventor 王卡风须成忠曹廷荣
Owner SHENZHEN INST OF ADVANCED TECH