一种基于DWT的数字水印算法

提出了一种基于离散小波变换的数字水印算法,选择低频子带嵌入水印,保证了水印的不可见性;该算法选择了对JPEG2000彩色多分量图像的Y分量嵌入Arnold变换水印,简化了水印的检测。实验结果表明,该方案能抵御压缩、模糊和锐化等攻击,具有较好的鲁棒性。

A Digital Watermarking Algorithm Based on DWT

The paper presents a digital watermarking algorithm for jpeg2000 image.The digit of bit operation in low frequency subband after discrete wavelet transforms,which ensured the watermarking's imperceptibility;Embedding watermarking which transformed by Arnold in Y component can simplify watermarking detection for jpeg2000 several components color images.The result of the experiment show that the algorithm can withstand a lot of attacks,such as compress,blurred and sharpen etc,and has good robustness.