%0 Journal Article
%T An Adaptive Watermarking Algorithm for DEM Based on DFT<br>一种基于DFT的DEM自适应数字水印算法
%A WANG Zhiwei
%A ZHU Changqing
%A YIN Shuowen
%A AN Min
%A <br>王志伟
%A 朱长青
%A 殷硕文
%A 安　敏
%J 中国图象图形学报
%D 2010
%I 
%X This paper introduces an adaptive watermarking algorithm for DEM. This proposed method can utilize human visual system(HVS), features of DEM data and discrete Fourier transform(DFT) to determine adaptively the location where the watermark can be hidden. And then, the watermark information is added to the lowness frequency of the texture region DFT. Experimental results show that the novel watermarking scheme for DEM has good imperceptibility, little effect on DEM accuracy and is robust to noise attack.
%K digital elevation model
%K digital watermark
%K discrete Fourier transform
%K slope
%K accuracy
%K adaptive<br>数字高程模型
%K 数字水印
%K 离散傅里叶变换
%K 坡度
%K 精度
%K 自适应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=218B6032F5C4D6646CAEE7FFCF5A041D&yid=140ECF96957D60B2&vid=23CCDDCD68FFCC2F&iid=94C357A881DFC066&sid=6920A1020E13BE87&eid=0018E43E61963A72&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=12