【摘要】 针对空间域水印嵌入算法鲁棒性不强的问题,利用Arnold变换的周期性,将其应用于水印图像的前期处理,然后再嵌入原始图像的内容(边缘)。使提取的水印图像的错误像素被分散到整个水印图像空间中,提高了人眼视觉系统对水印图像的辨识能力。从试验结果来看,该算法在一定程度上满足了数字水印的鲁棒性要求。更多还原

【Abstract】 In the paper,aiming at the problems of watermarking embedding algorithm of spatial domain which has not enough robustness,the algorithm is applied to watermark picture in the prophase by the periodicity of Arnold transform.And then the watermark picture after arnold transform is embedded at the edge of of the original image,which makes extracted wrong pixels of watermark picture spread around the whole space of watermark picture.Thus,distinguishing ability to watermark picture of the people’s vision system is enhanced.From the result of the experiment,this algorithm meets with the requirement of the digital im-age robustness to a certain extent.更多还原