Recognizing Objects in Adversarial Clutter: Breaking a Visual CAPTCHA
Inthispaperweexploreobjectrecognitioninclutter.We
testourobjectrecognitiontechniquesonGimpyandEZGimpy,
examplesofvisualCAPTCHAs.ACAPTCHA
(“CompletelyAutomatedPublicTuringtesttoTellComputers
andHumansApart”)isaprogramthatcangenerate
andgradeteststhatmosthuman
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