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img-captcha's Introduction

img-captcha 图片验证码

主要是采用canvas在图片源上的随机位置进行不规则图形的抠图，然后拖动抠出的图形进行位置匹配验证。

当然，在前端进行随机随机位置的选择存在不安全性，更保险的方式还是在服务端讲抠好的图片传到前端来进行验证。

支持传入多张图片，随机选择某一张图片进行验证

运行起来大概是这样的^_^（可能加载的有点慢）

查看example代码

example.gif

优化后的抠图算法，效果如下，相比而言，没有了黑边，体验更好点。

example2.gif

img-captcha's People

Contributors

shenzhim avatar kxbin avatar

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