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Title: CAPTCHA Using Hard AI Problems For Security full report
Page Link: CAPTCHA Using Hard AI Problems For Security full report -
Posted By: project topics
Created at: Wednesday 21st of April 2010 12:12:57 AM
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Abstract.
We introduce captcha, an automated test that humans can pass, but current computer programs canâ„¢t pass: any program that has high success over a captcha can be used to solve an unsolved Arti?- cial Intelligence (AI) problem. We provide several novel constructions of captchas. Since captchas have many applications in practical secu- rity, our approach introduces a new class of hard problems that can be exploited for security purposes. Much like research in cryptography has had a positive impact on algorithms for factoring and ....etc

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Title: 3D CAPTCHA A Next Generation of the CAPTCHA
Page Link: 3D CAPTCHA A Next Generation of the CAPTCHA -
Posted By: anushasekar2005
Created at: Monday 21st of March 2011 11:50:19 PM
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Title: An Alternative To Captcha - Video Captcha
Page Link: An Alternative To Captcha - Video Captcha -
Posted By: summer project pal
Created at: Monday 24th of January 2011 12:21:59 AM
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An Alternative To Captcha - Video Captcha
B.Tech Seminar report
by
Nawas Abdulla
Department of Computer Science And Engineering
Government Engineering College, Thrissur
December 2010

report:


Abstract
Video Captcha is a new technique for using content based video as a CAPTCHA
task. These CAPTCHAs are presently generated from YouTube videos, which con-
tains tags supplied by the person while uploading that video. These videos are graded
using the given video ....etc

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Title: audio captcha seminars report documentation
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Title: CAPTCHA Security A Low-Cost Attack on a Microsoft CAPTCHA
Page Link: CAPTCHA Security A Low-Cost Attack on a Microsoft CAPTCHA -
Posted By: Wifi
Created at: Monday 01st of November 2010 12:20:26 AM
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CAPTCHA Security: A Low-Cost Attack on a Microsoft CAPTCHA
SEMINAR REPORT
Submitted by
NARAYANAN V
DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING
COLLEGE OF ENGINEERING TRIVANDRUM
2010






ABSTRACT


CAPTCHA is now almost a standard security technology. The most widely used CAPTCHAs rely on the sophisticated distortion of text images rendering them unrecognizable to the state of the art of pattern recognition techniques, and these text-based schemes have found widespr ....etc

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Title: ieee paper audio captcha existing solutions assessment and a new implementation for voip telephony
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Title: Audio CAPTCHA Existing solutions assessment and Its Advancements
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Posted By: smart paper boy
Created at: Wednesday 17th of August 2011 05:50:12 PM
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Seminar Report on Audio CAPTCHA: Existing solutions assessment and It’s Advancements
What are CAPTCHAs?

Completely Automated Public Test to Tell Computers and Humans Apart.
Web-based protection mechanisms
Only humans allowed to perform certain tasks
Opening E-mail accounts
Voting on-line, etc.
Prevent automated attacks by bots
To avoid eating up resources
To avoid biasing results, etc.
Most current systems - text-based.
Why there came a need for Captchas???
Preventing Comment Spam in Blogs. 
Protec ....etc

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Title: Captcha
Page Link: Captcha -
Posted By: sharanps
Created at: Sunday 14th of March 2010 11:39:20 PM
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Title: Digital Audio Broadcasting DAB Digital Audio Broadcasting
Page Link: Digital Audio Broadcasting DAB Digital Audio Broadcasting -
Posted By: computer science crazy
Created at: Sunday 21st of September 2008 02:16:29 PM
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Abstract:

Digital audio broadcasting, DAB, is the most fundamental advancement in radio technology since that introduction of FM stereo radio. It gives listeners interference - free reception of CD quality sound, easy to use radios, and the potential for wider listening choice through many additional stations and services.

DAB is a reliable multi service digital broadcasting system for reception by mobile, portable and fixed receivers with a simple, non-directional antenna. It can be operated at any frequency from 30 MHz ....etc

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Title: audio captcha existing solution assesment and implementation over voip telephony
Page Link: audio captcha existing solution assesment and implementation over voip telephony -
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