【摘要】 通过分析人的视觉特性提出一种视觉掩盖模型 ,得到该模型水印嵌入算法和水印检测算法。在 DCT系统低频域上给典型的“L ena”图像嵌入水印后 ,进行压缩、加高斯噪声污染、滤波等试验 ,测试水印的稳健性 .结果发现 :水印输出响应非常高 ,有很好的鲁棒性 ,嵌入水印后的图像经一定的压缩、噪声污染、滤波等处理后仍可被检测到 .更多还原

【Abstract】 A visual masking model is presented by analyzing the human visual characteristics,then embeds watermark in the typical image of "Lena" by low frequency coefficient of DCT.The robustness of watermark is tested by the experiments such as condensation,Gaussian pollution and filter.The results of experiment proved that embedded watermark has good robustness and is invisible by using this model.更多还原