Internet users must often identify and key in a collection of distorted letters and numbers to get entrance to various Web sites. These are called Captcha — meant to be a barrier that prevents computer automatons ("bots") from getting into sites and voting, opening financial accounts or otherwise influencing content.
Now researchers at Tel Aviv University have developed a "synthesis technique" to overcome the "bots" by generating images of animated 3-D objects that are detectable by humans but difficult for an automatic algorithm to recognize. The team was headed by TAU computer studies department Prof. Daniel Cohen-Or and — unusually — included colleagues at King Abdullah University in Saudi Arabia, The University of Delhi in India and researchers in Taiwan.
Their findings are being presented this week at the Second ACM SIGGRAPH Asia Conference being held in Yokohama, Japan.
From The Jerusalem Post
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