摘要
针对LSB数字水印模型鲁棒性低的特点,提出一种基于混合光学双稳模型的用于改进LSB算法鲁棒性的数字水印方法。该算法首先用汉明码对需要进行嵌入的水印进行编码,再用Arnold置乱和混合双稳模型对水印进行加密,最后在图像的后四位随机进行水印嵌入,使水印的鲁棒性得到很好的提高。仿真实验结果表明,该算法对噪声叠加等攻击具有较好的安全性。
For the low robustness characteristics of LSB digital watermarking model, presents a digital watermarking method based on hybrid optical bistable model to improve the robust of LSB. The algorithm uses Hamming code to encode for the need of embedded watermark, and then encrypts Arnold scrambling and mixed bistable model watermark, after four random image watermark embedding, so the watermark robust has been well improved. Simulation results show that the algorithm for noise superimposed, cropping and other attacks has better security.
关键词
汉明码
混合光学双稳模型
LSB
ARNOLD置乱
Hamming Code
Hybrid Optical Bistable Model
Least Significant Bit
Arnold Transform
