摘要
分析了基于离散小波变换的图像水印嵌入方法。运用人眼视觉掩蔽模型(HVS)增强了数字水印的安全性和隐蔽性,把水印嵌入到感觉重要的小波变换系数中,提高了水印的稳健性。实验结果表明,该算法复杂度低,实用性较强,对JPEG压缩、滤波、加噪等图像处理操作有较强的鲁棒性。
An algorithm based on discrete wavelet transformation embedding digital watermark into image is analyzed. Using the human visual system （HVS）, the difference between original image and watermarked image could hardly be recognized by human sight, and the security of watermark is improved. Meanwhile, inserting digital watermark into the most important part of the wavelet transformation coefficients can improve the robustness of the watermark. The experimental results show that the algorithm is of less complexity, more strong usability, and robust against some image processing operations such as JPEG compression, filtering, noising and so on.
出处
《信息技术》
2008年第10期35-37,共3页
Information Technology
