A method and system for generating a picture verification code

Abstract

The invention is applicable to the technical field of verification code generation, and provides a method and system for generating a picture verification code. The method comprises the following steps: randomly generating verification code characters; randomly clearing part of the strokes of the verification code characters; processing the verification code characters whose partial strokes are removed into picture format verification code pictures. The method also includes the following steps: randomly generating verification code characters; dividing an area as the background area of ​​the verification code characters; filling the background region and the verification code characters in different ways; The background area and the verification code characters are processed into a verification code picture in picture format. The invention enables the verification code generated by the method for generating the picture verification code provided by the invention to reduce the difficulty of human eye recognition while increasing the difficulty of machine recognition.

Description

technical field [0001] The invention belongs to the technical field of verification code generation, and in particular relates to a method and system for generating a picture verification code. Background technique [0002] With the increasing popularity of computers and computer networks, the Internet has penetrated into all areas of people's work, study and life. Network development brings various challenges while providing convenience. Some people with ulterior motives will use robot programs to improperly use a large number of free Internet resources, such as mass spam, etc., which will greatly reduce server performance. There are also people who use the program to continuously send out service request responses to carry out "saturation attacks" to achieve the purpose of paralyzing the service. Some people even try to use brute force cracking and other means to steal virtual property. In order to avoid the above-mentioned malicious behaviors, it is very important to d...

AI Technical Summary

Problems solved by technology

[0004] The verification code letters generated by the above four methods have clear boundaries. Even if the automatic recognition is interfered by connecting strokes, random pixels, or changing colors, etc., however, increasing the interference makes the machine unable to recognize. It also makes it more difficult for people to identify, so it loses usability when it is complicated to a certain extent

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