一种自适应的 DCT 域水印算法

摘要

According to the characteristics of HVS and DCT coefficient , an adaptive watermarking algorithm embedded in DC and AC coefficient is proposed .Simulation results show that the algorithm is good at perceptual transparency as well as robustness against common signal processing such as cut operations , noise, filtering and JPEG compression.%　　根据 HVS 的特性和 DCT 系数的特点，提出了一种基于 DC 系数和 AC 系数的自适应水印嵌入方案。仿真实验表明：该算法具有良好的不可见性，并且在抵抗剪切操作以及噪声、滤波和 JPEG 压缩等常见的信号处理，表现出较强的鲁棒性。