适用于灰度和彩色图像的稳健性盲水印

文章提出了一种新的适用于灰度图像和彩色图像版权保护的稳健性盲水印算法,水印隐藏在DCT域的中频带,并用缓冲值根据实际要求来灵活调节水印的不可见性和稳健性。系统操作简单、易于实现,水印安全性用密钥来保证。仿真结果表明,该水印方案在抗各种噪声、JPEG压缩、裁剪、滤波、直方图均化及对比度变化等多种攻击时具有较强的稳健性。

Robust Blind Watermarking for Gray and Color Image

A novel robust blind watermarking algorithm for copyright protection of gray and color image is proposed. The watermark is embedded into the middle frequency bands of the DCT domain. The buffer value can flexibly adjust the invisibility and robustness according to the practical requirement. The watermarking system is easy to operate and implement. The security can be guaranteed by the key. The simulation results show the robustness is stronger against the attacks such as noise, JPEG compression, cropping, filtering, histogram equation and contrast change of tone.