What's up CAPTCHA? A CAPTCHA based on image orientation

WWW'09 - Proceedings of the 18th International World Wide Web Conference

Volumn , Issue , 2009, Pages 841-850

  Gossweiler, Rich ^a   Kamvar, Maryam ^a   Baluja, Shumeet ^a  

^a GOOGLE INC   (United States)

Author keywords

Automated attacks; CAPTCHA; Image processing; Orientation detection; Spam; Visual processing

Indexed keywords

AUTOMATED ATTACKS; CAPTCHAS; IMAGE ORIENTATION; SOCIAL FEEDBACKS; SPAM; TEXT RECOGNITION; VISUAL-PROCESSING; WEB SEARCHES;

CHARACTER RECOGNITION; IMAGE PROCESSING; MOBILE DEVICES; WORLD WIDE WEB;

ELECTRONIC MAIL FILTERS;

EID: 78650028938     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1145/1526709.1526822     Document Type: Conference Paper

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