Watermark Algorithm Based on Joseph Ring and Wavelet Transformation

A new algorithm in the wavelet of the digital image watermark based on the scrambling of the Joseph ring was firstly described in this paper. Firstly, the Joseph ring was used to the original watermarking image in the operation of scrambling pretreatment. And in this way, the scrambling effect and the anti-attack capability both had been improved. Secondly, according to the characteristic of the multi-resolution, the wavelet was utilized in the decomposition of the original watermarking image. Thirdly, the embedding formulas were available in inserting the watermark. And then the original watermarking image was extracted by the inverse operation. Finally, the result shows that this new algorithm boasts a good scrambling effect. And what's more, transforming by the use of the wavelet is more suitable to the human visual system. And the tests of the JPEG compression, noise and shear prove the high safety and robustness of this new algorithm.