%0 Journal Article
%T Effective Image Authentication Algorithm Based on Image Halftone Technique<br>基于色调处理技术的图像认证算法
%A Zhang Xiao-hua
%A Liu Fang
%A Jiao Li-cheng
%A <br>张小华
%A 刘芳
%A 焦李成
%J 电子与信息学报
%D 2004
%I 
%X Based on the image halftone technique, a new effective image authentication algorithm is proposed with self repairing ability. First, the original image is quantized by 4 bit based on the error diffusion image halftone, and then the result is permuted by chaos operator, at the same time the halftone color set is constructed with the least quantization error. Next, the permuted image is hidden into the original image based on the error diffusion watermark algorithm. When the watermarked image is received, to verify the authenticity of the received image, the hidden information is extracted out from the received image and permuted inversely. If the received image is similar to the extracted information, the received image is creditable, else that is to say, there exists a local region that is dissimilarity, i.e. the region is tampered, according to corresponding region of extracted information, the tampered region is repaired. Finally, experimental result to demonstrate the effectiveness of the proposed image authentication technique is presented.
%K Image authentication
%K Image halftone technique
%K Error diffusion
%K Self repairing ability<br>图像认证
%K 图像过渡色调技术
%K 误差扩散
%K 自修复能力
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=1E90D1959D80F525&yid=D0E58B75BFD8E51C&vid=96C778EE049EE47D&iid=94C357A881DFC066&sid=AF14A8B15FB15A64&eid=128B7AEF80A42C95&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=3&reference_num=5