A Blind Watermarking Algorithm Based on Fractional Fourier Transform
Fei Tian · Computer Knowledge and Technology · 2012
In order to improve the security of image watermarking,we can change the watermark positions and the transform or ders.In this paper,watermarking can be extracted without original image,which can improve the algorithm’s practicability.Re sults of the experiments show that this algorithm can assures good imperceptibility and robustness.