S. Vongpradhip

QR code using invisible watermarking in frequency domain

S. Vongpradhip, S. Rungraungsilp, S. Vongpradhip, 2012, 2011 Ninth International Conference on ICT and Knowledge Engineering.

Intelligent Audio Watermarking using Genetic Algorithm in DWT Domain

S. Vongpradhip, M. Ketcham, 2007 .