摘要
使用改进的形状上下文方法对复杂验证码进行识别,采用整体识别方法,不对图片进行切割,使用半极坐标圆进行建模的方式,解决2个字符连接处像素点建模互相干扰的问题。设计并实现复杂验证码识别算法,并与简单验证码进行比较。实验结果证明,复杂验证码识别算法能对字符粘连的复杂验证码进行识别。
This paper uses the improved shape conlext to recognize the complicated CAPTCHA. Through the holistic recognition method, without cutting the picture into pieces, but adopting semi-polar coordinates to model, it solves the problem that pixel points between two adhered characteristics interfered each other when modeling, designs and realizes its arithmetic method, and makes a contrast with other simple CAPTCHA＇s identifying process. Experimental result shows the method put forward in this paper can recognize complicated CAPTCHA.
出处
《计算机工程》
CAS
CSCD
北大核心
2011年第2期200-202,共3页
Computer Engineering
基金
国家科技型中小企业技术创新基金资助项目(09C26213203797)
关键词
验证码
形状上下文
整体识别
CAPTCHA
shape context
holistic recognition
