Verification code identification method and device, terminal and storage medium
A recognition method and a technology of a recognition device, which are applied in the field of Internet security, can solve the problems of low recognition accuracy of verification codes and poor segmentation of pasted characters, and achieve the effect of improving recognition accuracy and enhancing recognition ability
Active Publication Date: 2019-06-21
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 objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0060] figure 1 An embodiment of the verification code identification method of the present invention is shown. like figure 1 As shown, in this embodiment, the verification code identification method includes the following steps:
[0061] In step S1, a verification code image is acquired, 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 the noise on the verification code recognition.
[0063] In some e...
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The invention discloses a verification code identification method and device, a terminal and a storage medium. The method comprises: 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 to-be-identified character images; identifying the plurality of to-be-identified character images through a preset identification model; calculating the recognition accuracy of each character image to be recognized; when the recognition accuracy does not exceed the preset threshold value, adjusting the preset cutting range, carrying out cutting again, and training a preset recognition model according to the cutting result until the recognition accuracy exceeds the preset thresholdvalue. In the verification code recognition process, the verification code difficult to recognize is recut, and the preset recognition model is trained, so that the recognition capability of the preset recognition model is higher, and the recognition accuracy of the preset recognition model is improved.
Description
technical field [0001] The present invention relates to the technical field of Internet security, and in particular, to a verification code identification method, device, terminal and storage medium. Background technique [0002] In human-computer intelligent interaction, it is an important technology to intelligently identify verification codes, especially for machines to simulate human behavior. There are many types of captcha, and image-based captcha is one of the most widely used technologies. Then let the machine automatically recognize the image verification code is one of the basic technologies to complete the machine simulation. Image-based verification code recognition generally requires cutting characters, and then using machine learning or deep learning methods to classify the characters. The accuracy of character cutting directly affects the final prediction result. In practice, the verification codes are randomly generated, and the verification codes obtained ...
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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