摘要： 提出了一种基于图像分割和HVS的自适应数字水印算法。利用数字图像分割提取出图像中具有重要语义的区域，称为兴趣区域，作为水印嵌入的主要部位。每个兴趣区域按照其语义上的重要程度得到一个语义权值。对兴趣区域的子块，按照HVS特征给出子块的视觉屏蔽权值。两个权值的加权和决定各子块待嵌水印的强度。水印嵌入到各子块DCT域的低频部分。实验结果表明，该水印有很好的不可见性和鲁棒性。

关键词: 图像分割, 人类视觉系统, 兴趣区域, 数字水印

Abstract: An adaptive digital watermark based on image segmentation and HVS is proposed,which segments the region of interest(ROI) from the host image as the major parts to be watermarked. A weight according to its importance in semantics is given to every ROI .Then the vision mask weight of every block in the ROI is calculated. The sum of the two weights of the blocks in the ROI determines the intensity of the digital watermark.To every block of ROI,the watermark is embedded in the low frequency parts of its DCT matrix. Experiments show that this watermark is imperceptible and robust.

中图分类号: 

• TP391.41