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CAPTCHA

Known as: Image Verification, Gausebeck-Levchin test, Completely Automated Public Turing Test to Tell Computers and Humans Apart 
A CAPTCHA (a backronym for "Completely Automated Public Turing test to tell Computers and Humans Apart") is a type of challenge-response test used in… 
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Related topics

Related topics

49 relations
AI-completeAdobe ColdFusionAndrei BroderAnti-spam techniques

Broader (2)

Computer securityComputer vision

Papers overview

Semantic Scholar uses AI to extract papers important to this topic.
2010
2010
Jump Distribution Characteristics: Evidence from European Stock Markets
A comparison of the realized variance and the realized bipower variation provides a nonparametric estimation of the sum of all… 
2009
2009
Image flip CAPTCHA
The massive and automated access to Web resources through robots has made it essential for Web service providers to make some… 
2009
2009
Drag and Drop: A Better Approach to CAPTCHA
A Completely Automated Public Turing test to tell Computers and Humans Apart is a test use to determine whether the user is a… 
2007
2007
Question-Based CAPTCHA
Today there are many Internet sites which require only the entry by human users but unfortunately some computer softwares called… 
2007
2007
Multilingual CAPTCHA
Currently, many daily human activities such as education, commerce and talks are carried out through the Internet. In cases such… 
2006
2006
PRIMED: community-of-interest-based DDoS mitigation
Most existing distributed denial-of-service (DDoS) mitigation proposals are reactive in nature, i.e., they are deployed to limit… 
Highly Cited
1999
Highly Cited
1999
Verification watermarks on fingerprint recognition and retrieval
Current 'invisible' watermarking techniques aim at producing watermarked data that suffer no or little quality degradation and… 
1998
1998
Nonlinear filtering of magnetic resonance tomograms by geometry-driven diffusion
Abstract. The paper deals with a nonuniform diffusion filtering of magnetic resonance (MR) tomograms. Alternative digital schemes… 
Highly Cited
1997
Highly Cited
1997
Spatially Resolved Raman Spectroscopy of Carbon Electrode Surfaces: Observations of Structural and Chemical Heterogeneity
Raman spectroscopy and Raman imaging were used to examine several types of carbon electrode materials, including glassy carbon… 
1976
1976
Word verification in a speech understanding system
If, in a speech understanding system, word matching is performed at the phonetic level, then the accurate determination of the… 
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