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2006 IEEE International Conference on Multimedia and Expo
A Captcha Based on the Human Visual Systems Masking Characteristics
Toronto, ON, Canada
July 09-July 12
ISBN: 1-4244-0366-7
ASCII Text
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Rony Ferzli, Rida Bazzi, Lina Karam, "A Captcha Based on the Human Visual Systems Masking Characteristics," Multimedia and Expo, IEEE International Conference on, pp. 517-520, 2006 IEEE International Conference on Multimedia and Expo, 2006.
 
 
BibTex
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@article{ 10.1109/ICME.2006.262439,
author = {Rony Ferzli and Rida Bazzi and Lina Karam},
title = {A Captcha Based on the Human Visual Systems Masking Characteristics},
journal ={Multimedia and Expo, IEEE International Conference on},
volume = {0},
year = {2006},
isbn = {1-4244-0366-7},
pages = {517-520},
doi = {http://doi.ieeecomputersociety.org/10.1109/ICME.2006.262439},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
 
 
RefWorks Procite/RefMan/Endnote
x 
 
TY - CONF
JO - Multimedia and Expo, IEEE International Conference on
TI - A Captcha Based on the Human Visual Systems Masking Characteristics
SN - 1-4244-0366-7
SP517
EP520
A1 - Rony Ferzli,
A1 - Rida Bazzi,
A1 - Lina Karam,
PY - 2006
KW - null
VL - 0
JA - Multimedia and Expo, IEEE International Conference on
ER -
 
Rony Ferzli, Department of Electrical Engineering, Arizona State University, Tempe AZ 85287-5706. rony.ferzli@asu.edu
Rida Bazzi, Department of Computer Science&Engineering, Arizona State University, Tempe AZ 85287-8809. bazzi@asu.edu
Lina Karam, Department of Electrical Engineering, Arizona State University, Tempe AZ 85287-5706. karam@asu.edu
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 that edges can be masked by noise for a human observer while still being detected by machines, the suggested CAPTCHA is composed of English alphabets that are picked randomly and written with a combination of texture and edges with added noise such as to deceive the machine by randomly changing the visibility of characters for humans. The proposed CAPTCHA is highly legible and robust to brute-force attacks and sophisticated Object Character Recognition (OCR) segmentation algorithms.
Citation:
Rony Ferzli, Rida Bazzi, Lina Karam, "A Captcha Based on the Human Visual Systems Masking Characteristics," icme, pp.517-520, 2006 IEEE International Conference on Multimedia and Expo, 2006
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