{"id":365,"date":"2018-11-05T14:53:23","date_gmt":"2018-11-05T06:53:23","guid":{"rendered":"http:\/\/www.91tfboys.com\/?p=365"},"modified":"2019-04-26T20:55:21","modified_gmt":"2019-04-26T12:55:21","slug":"%e4%ba%ba%e5%b7%a5%e6%99%ba%e8%83%bd%e3%80%81%e5%bf%83%e7%90%86%e5%ad%a6%e4%b8%8e%e9%aa%8c%e8%af%81%e7%a0%81%ef%bc%88captcha%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.91tfboys.com\/?p=365","title":{"rendered":"\u4eba\u5de5\u667a\u80fd\u3001\u5fc3\u7406\u5b66\u4e0e\u9a8c\u8bc1\u7801\uff08CAPTCHA\uff09"},"content":{"rendered":"

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\"\"<\/p>\n

\u56fe1 \u5e38\u89c1\u9a8c\u8bc1\u7801\u8868\u793a\u5f62\u5f0f<\/p>\n

\u6765\u81ea\u7f8e\u56fd\u52a0\u5229\u798f\u5c3c\u4e9a\u7684\u7814\u7a76\u4eba\u5458\u63d0\u51fa\u4e86\u91c7\u7528\u9012\u5f52\u76ae\u5c42\u7f51\u7edc\uff08Recursive Cortical Network\uff0cRCN\uff09\u6765\u8fdb\u884c\u9a8c\u8bc1\u7801\u8bc6\u522b\u7684\u65b9\u6cd5\uff0c\u80fd\u5bf9\u590d\u6742\u7684\u9a8c\u8bc1\u7801\u8fdb\u884c\u81ea\u52a8\u5316\u7684\u8bc6\u522b\u3002RCN\u5206\u5c42\u6a21\u578b\u5c06\u795e\u7ecf\u79d1\u5b66\u7684\u7406\u8bba\u7eb3\u5165\u7ed3\u6784\u5316\u6982\u7387\u751f\u6210\u6a21\u578b\u6846\u67b6\u4e2d\uff0c\u5e76\u7ed3\u5408\u5404\u79cd\u89c6\u89c9\u8ba4\u77e5\u4efb\u52a1\uff0c\u5728\u8bad\u7ec3\u6837\u4f8b\u4e2d\u8fdb\u884c\u5e94\u7528\uff0c\u5305\u62ec\u89e3\u6790\u9a8c\u8bc1\u7801\u3001\u8bc6\u522b\u4e0e\u751f\u6210\u624b\u5199\u6570\u5b57\u3001\u906e\u6321\u63a8\u7406\u548c\u573a\u666f\u6587\u672c\u8bc6\u522b\u7b49\u3002<\/p>\n

\u5728RCN\u4e2d\uff0c\u5bf9\u8c61\u88ab\u8868\u793a\u4e3a\u8f6e\u5ed3\u548c\u66f2\u9762\u7684\u7ec4\u5408\uff08\u56fe2A\uff09\u3002 \u8f6e\u5ed3\u51fa\u73b0\u5728\u66f2\u9762\u7684\u8fb9\u754c\u5904\uff0c\u5305\u62ec\u5bf9\u8c61\u8f6e\u5ed3\u548c\u6784\u6210\u5bf9\u8c61\u7684\u66f2\u9762\u4e4b\u95f4\u7684\u8fb9\u754c\u3002\u66f2\u9762\u4f7f\u7528\u6761\u4ef6\u968f\u673a\u573a\uff08CRF\uff09\u5efa\u6a21\uff0cCRF\u6355\u83b7\u66f2\u9762\u5c5e\u6027\u53d8\u5316\u7684\u5e73\u6ed1\u5ea6\u3002\u56fe2B\u663e\u793a\u4e86RCN\u8f6e\u5ed3\u5c42\u6b21\u7ea7\u522b\u5185\u7684\u4e24\u4e2a\u5b50\u7f51\uff08\u9ed1\u8272\u548c\u84dd\u8272\uff09\u3002 \u56fe\u4e2d\u586b\u5145\u548c\u7a7a\u7684\u5706\u5f62\u8282\u70b9\u662f\u5206\u522b\u5bf9\u5e94\u4e8e\u7279\u5f81\u548c\u6c60\u7684\u4e8c\u8fdb\u5236\u968f\u673a\u53d8\u91cf\u3002\u56fe2C\u663e\u793a\u4e86\u8868\u793a\u6b63\u65b9\u5f62\u8f6e\u5ed3\u7684\u4e09\u7ea7\u7f51\u7edc\u3002 \u6700\u4f4e\u3001\u4e2d\u95f4\u548c\u6700\u9ad8\u5c42\u7684\u7279\u5f81\u5206\u522b\u4ee3\u8868\u7ebf\u6bb5\u3001\u89d2\u843d\u548c\u6574\u4e2a\u65b9\u5f62\u3002\u56fe2D\u8868\u793a\u5b57\u6bcd\u201cA\u201d\u7684\u56db\u7ea7\u7f51\u7edc\u3002<\/p>\n

\"\"<\/p>\n

\u56fe2 RCN\u7684\u7ed3\u6784<\/p>\n

\u56fe3\u662fRCN\u8bc6\u522b\u9a8c\u8bc1\u7801\u7684\u6548\u679c\u3002\u56fe3A\u662f\u4e9a\u9a6c\u900areCAPTCHA\u7684\u4e24\u5c42\u89e3\u6790\u548c\u4eba\u5de5\u6807\u8bb0\u3002\u56fe3B\u8868\u793aRCN\u548c\u5377\u79ef\u795e\u7ecf\u7f51\u7edc\uff08Convolutional Neural Network\uff0cCNN\uff09\u5728CAPTCHA\u6570\u636e\u96c6\u4e0a\u7684\u8bc6\u522b\u51c6\u786e\u7387\u3002\u5f53\u5b57\u7b26\u95f4\u8ddd\u53d1\u751f\u53d8\u5316\u65f6\uff0cRCN\u7684\u6548\u679c\u8981\u597d\u4e8eCNN\u3002\u56fe3C\u662f\u5728reCAPTCHA\u3001BotDetect\u3001\u96c5\u864e\u3001Paypal\u4e0a\u5bf9\u9a8c\u8bc1\u7801\u8bc6\u522b\u7684\u51c6\u786e\u7387\u3002\u56fe3D\u4ee3\u8868BotDetect\u89e3\u6790\u548c\u5206\u5272\uff08\u7531\u4e0d\u540c\u989c\u8272\u8868\u793a\uff09\u3002<\/p>\n

\"\"<\/p>\n

\u56fe3 RCN\u89e3\u6790\u9a8c\u8bc1\u7801\u6548\u679c<\/p>\n

\u628a\u4eba\u5bf9\u56fe\u5f62\u7684\u611f\u77e5\u8fd0\u7528\u5728\u81ea\u52a8\u5316\u4e0e\u4eba\u5de5\u667a\u80fd\u9886\u57df\u4ea7\u751f\u4e86\u5f88\u597d\u7684\u6548\u679c\u3002\u5305\u62ec\u795e\u7ecf\u7f51\u7edc\u5728\u5185\u7684\u4e00\u4e9b\u6a21\u578b\u7ed3\u5408\u4e86\u591a\u4e2a\u5b66\u79d1\u7684\u7406\u8bba\uff0c\u5728\u81ea\u7136\u8bed\u8a00\u5904\u7406\u3001\u6a21\u5f0f\u8bc6\u522b\u7b49\u65b9\u9762\u6709\u5f88\u6df1\u5165\u548c\u6210\u719f\u7684\u5e94\u7528\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u8fd9\u4e9b\u6a21\u578b\u4e5f\u9010\u6e10\u8fdb\u5165\u5305\u62ec\u7f51\u7edc\u7a7a\u95f4\u5b89\u5168\u5728\u5185\u7684\u5176\u4ed6\u9886\u57df\uff0c\u5728\u5f88\u591a\u5de5\u4f5c\u4e2d\u4e5f\u53d6\u5f97\u4e86\u5f88\u597d\u7684\u6548\u679c\u3002<\/p>\n

 <\/p>\n

\u53c2\u8003\u6587\u732e<\/p>\n

[1] Ahn, Luis Von, et al.\u00a0“CAPTCHA: Using Hard AI Problems for Security. ”\u00a0In EUROCRYPT 2003: International Conference on the Theory and Applications of Cryptographic Techniques.<\/em> Springer Berlin Heidelberg, 2003:294-311.<\/p>\n

[2] George, D, et al. “A generative vision model that trains with high data efficiency and breaks text-based CAPTCHAs.”\u00a0Science<\/em>358.6368(2017):eaag2612.<\/p>\n

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