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java - 这个验证码怎么识别?
ringa_lee
ringa_lee 2017-04-18 10:18:03
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左手右手慢动作
左手右手慢动作2017-04-18 10:20:03 1 floor

1.灰度化
2.降噪
3.阈值二值化
4.再用算法识别，如：SVM

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