一种基于HVS的彩色图像水印算法  

Digital Watermark Algorithm for Color Images Based on HVS

作　　者：刘利田[1] 常建平[1] 

机构地区：[1]南京航空航天大学信息科学与技术学院,南京210016

出　　处：《计算机工程》2007年第24期144-145,共2页Computer Engineering

摘　　要：讨论了一种将彩色水印图像嵌入到原始彩色图像中的数字水印算法。它利用人眼视觉系统特性,采用了在DWT域下按照频带重要性来嵌入水印的规则,即:水印应当首先嵌入图像小波低频系数,若有剩余,再按图像小波频带重要性的排序嵌入高频带。实验结果表明,提取的水印表现出较好的鲁棒性,且主观视觉失真较小。A digital watermark algorithm by embedding a color digital watermark into an original color image is discussed. The algorithm inserts the watermarks according to the significance of subbands based on DWT and HVS, i.e. the watermarks should be embedded in the low frequency subbands, and the remains of the watermarks should be embedded in the high frequency subbands according to the significance of subbands. The simulation results demonstrate that the algorithm is robust and the extracted watermark has low visual distortion.

关 键 词：彩色数字水印 人眼视觉系统 DWT域 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]