David Lorenzi, Pratik Chattopadhyay, Emre Uzun, Jaideep Vaidya, Shamik Sural, Vijayalakshmi Atluri. Generating Secure Images for CAPTCHAs through Noise Addition. In Edgar R. Weippl, Florian Kerschbaum, Adam J. Lee, editors, Proceedings of the 20th ACM Symposium on Access Control Models and Technologies, Vienna, Austria, June 1-3, 2015. pages 169-172, ACM, 2015. [doi]
Abstract is missing.