遥感影像不可见数字水印算法比较与分析  

Comparison and Analysis of Invisible Digital Watermark Algorithms for Remote Sensing

作　　者：秦思娴 余咏胜 张小惠[2] 李琼 郑颖 QIN Sixian YU Yongsheng ZHANG Xiaohui LI Qiong ZHENG Ying(Wuhan Institute of Surveying and Mapping, Wuhan 430022, China Wuhan Police Vocational College, Wuhan 430040, China)

机构地区：[1]武汉市测绘研究院,湖北武汉430022 [2]武汉警官职业学院,湖北武汉430040

出　　处：《测绘地理信息》2017年第5期59-62,共4页Journal of Geomatics

基　　金：武汉大学精密工程与工业测量国家测绘地理信息局重点实验室开放研究基金资助项目(PF2013-14)

摘　　要：以遥感影像不可见数字水印算法为研究对象,介绍了当前主要空间域和频率域数字水印算法原理,包括以最低位算法和Patchwork算法为代表的空间域算法,以离散傅里叶变换算法、离散余弦变换算法和离散小波变换算法为代表的频率域算法,通过遥感影像数字水印嵌入和检测实验,对数字水印算法进行了主观分析、客观分析和抗攻击性评价。实验结果表明,频率域数字水印算法表现整体优于空间域数字水印算法,频率域算法中离散余弦变换算法和离散小波变换算法的表现较好,更适用于遥感影像数字水印算法的应用。This paper takes invisible remote sensing digital watermark algorithm as the study object,introduces the fundamental theories of widely used spatial domain and frequency domain digital watermarking algorithms,which include least significant bit（LSB）algorithm and Patchwork algorithm in spatial domain,discrete Fourier transform（DFT）algorithm,discrete cosine transform（DCT）algorithm and discrete wavelet transform（DWT）algorithm in frequency domain.Then invisible digital watermark embedding and recovering experiment is carried out on remote sensing data to evaluate the performance of each algorithm based on the subjective analysis,objective analysis and evaluation of resistance to attack.Experimental results show that the frequency domain algorithms generally perform better than the spatial domain algorithms;DCT algorithm and DWT algorithm perform better than other frequency domain algorithms and are more suitable for the remote sensing data watermark process.

关 键 词：遥感影像 不可见数字水印 空间域算法 频率域算法 

分 类 号：P237[天文地球—摄影测量与遥感] TP75[天文地球—测绘科学与技术]