Study on Finite Ridgelet Transform in Copyright Protection
Ruiling Zhu · Video Engineering · 2010
A scheme about copyright protection is proposed in finite ridgelet domain.How to select the finite ridgelet transform(FRIT) coefficients suitable to embed watermark data are short of study.Choice of coefficients is often determined by experiments,and it is lack of mathematical analysis.The FRIT coefficients suitable to embed watermark is determined by adopting soft-threshold,and the noise visibility of the FRIT coefficients is estimated.Watermark is embedded adaptively.Robustness and transparency are proven by experimental results.