Israeli and Saudi researchers develop stronger captcha technique
Dec 30, 2009 at 8:59 am in News by Computer Vision Central
Captchas are the tests a website uses to verify that a user is a human and not an automated script called a bot. The typical captcha requires the user to type in letters or numbers presented as distorted or partially obscured. However, computer vision techniques have been used to develop bots that can solve captchas, creating a need to develop new types of captchas.
An international team of researchers led by Professor Cohen-Or at Tel Aviv University, in collaboration with researchers from Saudi Arabia’s King Abdullah University in Saudi Arabia, India’s University of Delhi, and Taiwan, presented a new type of captcha at ACM SIGGRAPH Asia this month. The new technique presents animated 3D objects that are perceived correctly by humans but difficult for current computer vision methods to detect.
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