William German Salas Avila, Maria Alejandra Osorio Angarita, Agustin Moreno Cañadas. Matrix problems to generate mosaic-based CAPTCHAs. In 6th International Conference on Imaging for Crime Detection and Prevention, ICDP 2015, London, UK, 15-17 July 2015. pages 1-5, IET / IEEE, 2015. [doi]
Abstract is missing.