Michitomo Yamaguchi, Takeshi Okamoto, Hiroaki Kikuchi. CAPTCHA System by Differentiating the Awkwardness of Objects. In Leonard Barolli, Makoto Takizawa, Hui-Huang Hsu, Tomoya Enokido, Fatos Xhafa, editors, 18th International Conference on Network-Based Information Systems, NBis 2015, Taipei, Taiwan, September 2-4, 2015. pages 257-263, IEEE Computer Society, 2015. [doi]
Abstract is missing.