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MM
2005
ACM
114views Multimedia» more  MM 2005»
13 years 10 months ago
IMAGINATION: a robust image-based CAPTCHA generation system
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...
Ritendra Datta, Jia Li, James Ze Wang
KDD
2009
ACM
166views Data Mining» more  KDD 2009»
13 years 9 months ago
TagCaptcha: annotating images with CAPTCHAs
Donn Morrison, Stéphane Marchand-Maillet, E...
SIPS
2008
IEEE
13 years 11 months ago
Bio-inspired unified model of visual segmentation system for CAPTCHA character recognition
In this paper, we present a bio-inspired unified model to improve the recognition accuracy of character recognition problems for CAPTCHA (Completely Automated Public Turing Test t...
Chi-Wei Lin, Yu-Han Chen, Liang-Gee Chen
HIP
2005
Springer
168views Cryptology» more  HIP 2005»
13 years 10 months ago
Leveraging the CAPTCHA Problem
Efforts to defend against automated attacks on e-commerce services have led to a new security protocol known as a CAPTCHA, a challenge designed to exploit gaps in the perceptual a...
Daniel P. Lopresti
ECCV
2010
Springer
13 years 10 months ago
Word Spotting in the Wild
We present a method for spotting words in the wild, i.e., in real images taken in unconstrained environments. Text found in the wild has a surprising range of difficulty. At one en...