A CAPTCHA Implementation Based on Moving Objects Recognition Problem. - Jing-Song Cui; Jing-Ting Mei; Wu-Zhou Zhang; Xia Wang; Da Zhang (ICEE, 2010)

CAPTCHA design based on moving object recognition problem. - Jing-Song Cui; Lijing Wang; Jing-Ting Mei; Da Zhang; Xia Wang; Yang Peng; Wu-Zhou Zhang (ICIS, 2010)