Title : ( Multiple SEmantic IMage CAPTCHA )
Authors: Maryam Mehrnejad , Abbas Ghaemi Bafghi , Ahad Harati , Ehsan Toreini ,
Full TextAbstract
This paper presents a new semantic image CAPTCHA, called Multiple SEIMCHA. Multiple SEIMCHA system warps images by using geometric transformations and a 2d view of warped image is shown to user. Users should click on the upright orientation of warped image as a semantic. Multiple SEIMCHA evaluates user based on the idea of almost right response instead of completely right response. This idea uses hardness rate concept which is defined based on user response rate to images. The proposed system has a great response time and success rate as usability metrics and it is secure to bots.
Keywords
Multiple SEIMCHA; Almost Right Response based on Hardness Rate; Semantic Image based CAPTCHA; Upright Orientation; Geometric transformation
@inproceedings{paperid:1026530,
author = {Mehrnejad, Maryam and Ghaemi Bafghi, Abbas and Harati, Ahad and Ehsan Toreini},
title = {Multiple SEmantic IMage CAPTCHA},
booktitle = {The 6th International Conference for Internet Technology and Secured Transactions (ICITST-2011)},
year = {2011},
location = {دوبی},
keywords = {Multiple SEIMCHA; Almost Right Response based on Hardness Rate; Semantic Image based CAPTCHA; Upright Orientation; Geometric transformation},
}
%0 Conference Proceedings
%T Multiple SEmantic IMage CAPTCHA
%A Mehrnejad, Maryam
%A Ghaemi Bafghi, Abbas
%A Harati, Ahad
%A Ehsan Toreini
%J The 6th International Conference for Internet Technology and Secured Transactions (ICITST-2011)
%D 2011
