3 search results - page 1 / 1 » IMAGINATION: a robust image-based CAPTCHA generation system |
MM
2005
ACM
13 years 10 months ago
2005
ACM
We propose IMAGINATION (IMAge Generation for INternet AuthenticaTION), a system for the generation of attack-resistant, user-friendly, image-based CAPTCHAs. In our system, we prod...
CCS
2010
ACM
13 years 4 months ago
2010
ACM
We systematically study the design of image recognition CAPTCHAs (IRCs) in this paper. We first review and examine all IRCs schemes known to us and evaluate each scheme against th...
DAS
2010
Springer
13 years 8 months ago
2010
Springer
Conventional optical character recognition (OCR) systems operate on individual characters and words, and do not normally exploit document or collection context. We describe a Coll...