一种基于DCT的自适应图像数字水印算法

本文提出了一种基于IIX2T变换的自适应数字水印算法，其主要思想是通过将栽体图像按8×8分块并利用视觉特性对每个分块进行分类，依据分类结果将水印信号以不同强度嵌入到载体图像中；再利用Watson模型对图像进行评价，根据评价结果决定是否对嵌入强度进行调整。实验结果表明，该算法对常见图像处理和噪声干扰具有较好的鲁棒性。

An Adaptive Image Watermarking Algorithm

This paper describes an adaptive watermarking algorithm based on discrete cosine transformation. The algorithm splits the original image into 8×8 blocks and classifies these blocks based on visual masking. Watermarking components with different strengths are inserted into the original image according to the classification. The algorithm evaluates the image with the Watson model and adjusts the strengths according to the results.Experimental results demonstrate this algorithm is robust against the noise and the commonly used image processing techniques.