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» A Highly Legible CAPTCHA That Resists Segmentation Attacks
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HIP
2005
Springer
208views Cryptology» more  HIP 2005»
14 years 11 days ago
A Highly Legible CAPTCHA That Resists Segmentation Attacks
A CAPTCHA which humans find to be highly legible and which is designed to resist automatic character–segmentation attacks is described. As first detailed in [BR05], these ‘Sc...
Henry S. Baird, Michael A. Moll, Sui-Yu Wang
ICDAR
2005
IEEE
14 years 14 days ago
ScatterType: A Legible but Hard-to-Segment CAPTCHA
The ScatterType CAPTCHA, designed to resist character– segmentation attacks and shown to be highly legible to human readers, is analyzed for vulnerabilities and is offered for e...
Henry S. Baird, Michael A. Moll, Sui-Yu Wang
ICMCS
2006
IEEE
133views Multimedia» more  ICMCS 2006»
14 years 27 days ago
A Captcha Based on the Human Visual Systems Masking Characteristics
In this paper, a CAPTCHA is presented based on the masking characteristics of the Human Visual System (HVS). Knowing that noise can be masked by high activity regions and showing ...
Rony Ferzli, Rida A. Bazzi, Lina J. Karam
EUROSEC
2010
ACM
14 years 4 days ago
The robustness of a new CAPTCHA
CAPTCHA is a standard security technology that presents tests to tell computers and humans apart. In this paper, we examine the security of a new CAPTCHA that was deployed until v...
Ahmad Salah El Ahmad, Jeff Yan, Lindsay Marshall
MM
2005
ACM
114views Multimedia» more  MM 2005»
14 years 12 days 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