SEIMCHA: a new semantic image CAPTCHA using geometric transformations

Maryam Mehrnejad, Abbas Ghaemi Bafghi, Ahad Harati, Ehsan Toreini. SEIMCHA: a new semantic image CAPTCHA using geometric transformations. ISeCure, 4(1):63-76, 2012. [doi]

Authors

Maryam Mehrnejad

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Abbas Ghaemi Bafghi

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Ahad Harati

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Ehsan Toreini

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