Ping Zhang, Haichang Gao, Zhouhang Cheng, Fang Cao. Two Novel Image-Based CAPTCHA Schemes Based on Visual Effects. In Jinfeng Yang, Qinghua Hu, Ming-Ming Cheng, Liang Wang 0001, Qingshan Liu, Xiang Bai, Deyu Meng, editors, Computer Vision - Second CCF Chinese Conference, CCCV 2017, Tianjin, China, October 11-14, 2017, Proceedings, Part III. Volume 773 of Communications in Computer and Information Science, pages 14-25, Springer, 2017. [doi]
Abstract is missing.