%0 Journal Article
%T Wavelet Based Image Authentication and Recovery
%A Rafiullah Chamlawi
%A Asifullah Khan
%A Adnan Idris
%A <br>Rafiullah Chamlawi
%A Asifullah Khan
%A and Adnan Idris
%J 计算机科学技术学报
%D 2007
%I 
%X In this paper,we propose a secure senti-fragile watermarking technique based on integer wavelet transform with a choice of two watermarks to be embedded.A self-recovering algorithm is employed,that hides the image digest into some wavelet subbands for detecting possible illicit object manipulation undergone in the image.The semi-fragility makes the scheme tolerant against JPEG lossy compression with the quality factor as low as 70%,and locates the tampered area accurately.In addition,the system ensures more security because the embedded watermarks are protected with private keys.The computational complexity is reduced by using parameterized integer wavelet transform.Experimental results show that tile proposed scheme guarantees safety of a watermark,recovery of image and localization of tampered area.
%K semi-fragile watermark
%K integer wavelet transform(IWT)
%K discrete cosine transform(DCT)
%K JPEG com-pression
%K authenticcation and self-recovery<br>子波成像
%K 鉴定方法
%K 离散余弦变换
%K 水位标
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=F57FEF5FAEE544283F43708D560ABF1B&aid=CBCDFFE5AEBDB1BFCF5CEF607CCBBB07&yid=A732AF04DDA03BB3&vid=BC12EA701C895178&iid=B31275AF3241DB2D&sid=FC6FCA5A7559F1FB&eid=1F94F38CF0FA5258&journal_id=1000-9000&journal_name=计算机科学技术学报&referenced_num=0&reference_num=19