| 一种SVM验证码识别算法 |
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| 引用本文： | 殷光,陶亮. 一种SVM验证码识别算法[J]. 计算机工程与应用, 2011, 47(18): 188-190. DOI: 10.3778/j.issn.1002-8331.2011.18.055 |
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| 作者姓名： | 殷光 陶亮 |
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| 作者单位： | 安徽大学 计算智能与信号处理教育部重点实验室，合肥 230039 |
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| 基金项目： | 国家自然科学基金，安徽省人才发展基金 |
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| 摘 要： | 设计验证码的主要目的是区分人类和计算机，用来防止网络机器人的一些恶意行为。验证码的出现也催生了一批新工种，电子商务的发展迫切需要一种推广方式来推销他们的商品，残障人士上网问题也需要迫切关注，因此许多人开始研究网络机器人技术，用来实现邮箱自动注册、群发信息、自动灌水、自动登录等功能。目前，各种类型网站系统都利用验证码阻止网络机器人入侵，从而验证码识别技术成为研究热点。基于SVM技术对图像验证码进行识别，取得了良好的效果。
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| 关 键 词： | 支持向量机 序贯最小化算法 选择工作集 核函数 多类分类 验证码识别 |
| 修稿时间： | |
Verified code recognition algorithm based on SVM |
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| YIN Guang,TAO Liang. Verified code recognition algorithm based on SVM[J]. Computer Engineering and Applications, 2011, 47(18): 188-190. DOI: 10.3778/j.issn.1002-8331.2011.18.055 |
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| Authors: | YIN Guang TAO Liang |
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| Affiliation: | Key Lab of Intelligent Computing and Signal Processing of MOE，Anhui University，Hefei 230039，China |
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| Abstract: | The usage of verified code is to distinguish between human and machine behavior,which can be used to prevent the malicious behaviors of web robot.The emergence of verified code also makes a number of new types of jobs.The development of e-commerce needs a certain way to promote its goods,and disabilities need urgent attention;thus,many people begin to study web robot technology.They hope that it can realize automatic registrations for email systems,multi-send messages,au- tomatic flood-blogging and auto-login et al.At present,various types of web systems make use of verified code to prevent robots invasion,so the verified code recognition technology is a research hotspot.Based on SVM（Support Vector Machine）,a verified code recognition algorithm is proposed,and the experimental results show that the algorithm is efficient. |
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| Keywords: | Support Vector Machine（SVM） Sequential Minimization Optimization（SMO） working set selection kernel func- tion multi-class classification verified code recognition |
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