%0 Journal Article
%T The Design and Application of the Filters in Digital Image Watermarking Technology<br>图像数字水印技术中滤波器的设计和应用
%A WU Xiang sheng
%A ZANG Xiao feng
%A <br>伍祥生
%A 臧晓峰
%J 中国图象图形学报
%D 2005
%I 
%X Based on log polar mapping, five filters have been designed and applied in this paper. In order to check the digital watermark embedded in digital images, we compared the classical matched filter, amplitude only filter, phase only filter, binary phase only filter and a new filtering method. Experimental results demonstrate that the new filter, phase only filter and binary phase only filter can be used to identify the digital watermark in the digital images when there is no rotation, scaling and translation for the images embedded digital watermark; Suppose the image embedded digital watermark is rotated ten degree and scaled down ten percent, it can be found the classical matched filter, amplitude only filter, phase only filter and binary phase only filter can't be used to identify the digital watermark in the digital images ,but this new filtering method can still be used to identify the digital watermark in digital images.
%K digital image watermarking
%K log
%K polar mapping
%K filter
%K digital watermarking identify<br>图像数字水印
%K 匹配滤波器
%K LPM
%K 识别
%K 几何失真
%K 嵌入
%K 设计
%K 相位
%K 尺寸
%K 放大
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=0C24D11227025F80&yid=2DD7160C83D0ACED&vid=F3090AE9B60B7ED1&iid=CA4FD0336C81A37A&sid=117F81797AB182FC&eid=08805F9252973BA4&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=3&reference_num=5