The Digital Watermarking Encryption Algorithm of Brocade Design Based on Bidimensional Empirical Mode Decomposition
Jin Li · Journal of Jiangxi Normal University · 2011
The encrypted watermark image,which generated from ascending chaos sequence based on chaos maps,transforms first Intrinsic Mode Function image by discrete wavelet with 8×8 blocks.Then the encrypted watermark image is embedded in the transformed matrix.Finally,the encrypted brocade pattern is obtained by taking Bidimensional Empirical Mode Decomposition Inverse Transform to the matrix.The experimental results show that the algorithm improves the safety and encrypted effect for encrypted watermark image.