A Nonnegative Matrix Factorization Scheme for Digital Image Watermarking. - Mohammadreza Ghaderpanah; A. Ben Hamza (ICME, 2006)

Entropic hashing of 3D objects using Laplace-Beltrami operator. - Mohammadreza Ghaderpanah; Abdullah Abbas; A. Ben Hamza (ICIP, 2008)