On grey levels in random CAPTCHA generation

Fraser Newton, Michael A. Kouritzin. On grey levels in random CAPTCHA generation. In Zia-ur Rahman, Stephen E. Reichenbach, Mark A. Neifeld, editors, Visual Information Processing XX, 25 April 2010, Orlando, Florida, USA. Volume 8056 of SPIE Proceedings, SPIE, 2011. [doi]

Authors

Fraser Newton

This author has not been identified. Look up 'Fraser Newton' in Google

Michael A. Kouritzin

This author has not been identified. Look up 'Michael A. Kouritzin' in Google