图片加噪避免 OCR - V2EX
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vacua

图片加噪避免 OCR

  •  
  •   vacua Jul 16, 2019 via Android 3027 views
    This topic created in 2480 days ago, the information mentioned may be changed or developed.

    唔,新浪腾讯好像都有类似的文字识别关键字然后自动屏蔽删帖,有没有什么处理手段能让它识别不出来呢?

    12 replies    2022-04-28 14:28:43 +08:00
    edgnoz
        1
    edgnoz  
       Jul 16, 2019
    旋转 180 度? wb 上有些敏感消息就是这样发的。还有一些是在首屏范围内用纯色,然后接下来才是内容,再倒着
    PinkPumpkin
        2
    PinkPumpkin  
       Jul 16, 2019 via Android
    可以借鉴一下验证码的生成算法,应该有不少相通之处。
    jdhao
        3
    jdhao  
       Jul 16, 2019 via Android
    建议了解一下当前 ocr 的能力,然后你就知道怎么防御了
    jdhao
        4
    jdhao  
       Jul 16, 2019 via Android
    国内 ocr 比较厉害的,腾讯,百度
    iPhoneXI
        5
    iPhoneXI  
       Jul 16, 2019 via Android
    找一些开源 OCR 库,看它的识别算法,然后根据这个算法来加噪声,
    之后找识别率高的 OCR 服务来验证
    loading
        6
    loading  
       Jul 16, 2019 via Android
    你可以看看现在的 ocr 把注册码逼到什么程度。
    vacua
        7
    vacua  
    OP
       Jul 16, 2019 via Android
    @edgnoz :doge: 旋转 180 比较影响阅读,估计最后还是得着落在加各种噪声
    vacua
        8
    vacua  
    OP
       Jul 16, 2019 via Android
    @jdhao @iPhoneXI 多谢,我去看看腾讯的 api,估计能骗过它就能骗过国内绝大部分服务了
    cjpjxjx
        9
    cjpjxjx  
       Jul 16, 2019
    rb6221
        11
    rb6221  
       Jul 16, 2019 via iPhone
    gif ?
    flasktest1
        12
    flasktest1  
       Apr 28, 2022
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