Image robust watermarking algorithm based on universal radial complex exponential transformation
To solve the problem of poor robustness of image watermarking to noise and geometric attacks,this paper proposes a robust watermarking algorithm based on general radial complex exponential transforma-tion.The algorithm adjusts the magnitude of the transformation coefficient of the selected universal radial complex exponential transformation and embeds it into the image.During the watermark extraction process,the transformation coefficient is calculated through the watermark image to obtain the watermark.The exper-iment results show that the watermarking algorithm is robust to noise,filtering and geometric attacks when the parameters of the universal radial complex exponential transform are different.It is verified that the wa-termarking algorithm is more robust to center pruning attacks when the parameters of the universal radial complex exponential transform are properly selected.
万方数据
维普
