【摘要】 提出了一种基于图像语义特征的D CT域自适应水印算法。该算法首先对图像进行分块,根据各块到图像中心的距离及各块纹理丰富程度确定水印是否嵌入,并依据其纹理丰富程度确定嵌入强度,最后在DCT的基础上将水印嵌入到中低频系数上。该水印不但不可察觉性好,且具有良好的鲁棒性。更多还原

【Abstract】 This paper proposes an arithmethm of adaptive watermarking base on the semantic of image.At first,we aparts the image blocks of 88,and decide if the watermarking embedded in this block by its distance and texture.Secondly,decide the intensity of embedding with its texture.At last,the watermark is embeded in its intermediate frequency coefficient of DCT.The experimentation Indicates:with this way,we can get good imperceptibility and it is very robustrobustable.更多还原