Collage CAPTCHA Export

@inproceedings{citeulike:5347849, abstract = {Nowadays, many daily human activities such as education, commerce, talks, etc. are carried out through the Internet. In cases such as the registering in websites, some hackers write programs to make automatic false enrolments which waste the resources of the website while this may even stop the entire website from working. Therefore, it is necessary to tell apart human users from computer programs which is known as CAPTCHA (completely automated p[ublic turing test to tell computers and human apart). CAPTCHA methods are mainly based on the weak points of OCR (optical character recognition) systems while using them are undesirable to human users. In this paper a method has been presented for telling the human users and computer softwares apart on the basis of choice of an object shown on the screen. In this method some pictures are chosen randomly and after effecting some changes such as rotating, all of them are shown on the screen. Then we ask the user to choose a specific object. If the user chooses the right object we can guess that the user has been a human being not computer software. The main advantage of this method is its simplicity because the user does not have to type anything. This method has been implemented by the Java programming language.}, author = {Shirali-Shahreza, M. and Shirali-Shahreza, S.}, booktitle = {Signal Processing and Its Applications, 2007. ISSPA 2007. 9th International Symposium on}, citeulike-article-id = {5347849}, citeulike-linkout-0 = {http://dx.doi.org/10.1109/ISSPA.2007.4555329}, citeulike-linkout-1 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4555329}, doi = {10.1109/ISSPA.2007.4555329}, journal = {Signal Processing and Its Applications, 2007. ISSPA 2007. 9th International Symposium on}, keywords = {captcha}, pages = {1--4}, posted-at = {2009-08-04 09:08:22}, priority = {2}, title = {Collage CAPTCHA}, url = {http://dx.doi.org/10.1109/ISSPA.2007.4555329}, year = {2007} }

TY - CONF ID - citeulike:5347849 L3 - citeulike-article-id:5347849 N2 - Nowadays, many daily human activities such as education, commerce, talks, etc. are carried out through the Internet. In cases such as the registering in websites, some hackers write programs to make automatic false enrolments which waste the resources of the website while this may even stop the entire website from working. Therefore, it is necessary to tell apart human users from computer programs which is known as CAPTCHA (completely automated p[ublic turing test to tell computers and human apart). CAPTCHA methods are mainly based on the weak points of OCR (optical character recognition) systems while using them are undesirable to human users. In this paper a method has been presented for telling the human users and computer softwares apart on the basis of choice of an object shown on the screen. In this method some pictures are chosen randomly and after effecting some changes such as rotating, all of them are shown on the screen. Then we ask the user to choose a specific object. If the user chooses the right object we can guess that the user has been a human being not computer software. The main advantage of this method is its simplicity because the user does not have to type anything. This method has been implemented by the Java programming language. JF - Signal Processing and Its Applications, 2007. ISSPA 2007. 9th International Symposium on EP - 4 TI - Collage CAPTCHA T2 - Signal Processing and Its Applications, 2007. ISSPA 2007. 9th International Symposium on SP - 1 KW - captcha AU - Shirali-Shahreza, M AU - Shirali-Shahreza, S PY - 2007/// UR - http://dx.doi.org/10.1109/ISSPA.2007.4555329 ER -