Digital watermarking algorithm based on RDFT
Zhao Liu-qing · Journal of Changchun University of Technology · 2009
A new image watermarking algorithm based on real discrete Fourier transform is proposed in the paper.Arnold iterative transform is used to disarray the watermarks before embedding,and then the disarrayed watermarks with binary random sequences are embedded into the phase components of real Fourier transform field.Experimental results demonstrated that the algorithm has better invisibility and is robust to the attacks such as JPEG compression,noise addition.