期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2016
卷号：4
期号：1
页码：189
DOI：10.15680/IJIRCCE.2016.0401036
出版社：S&S Publications
摘要：In order to improve the robustness of watermarking algorithm, a dual watermarking method is proposed to provideprotection. For protecting various online resources from unauthorized users, visible watermarking is more importanthoweverrobust, for illegal removal and other common signal processing and geometric attacks, visiblewatermarks are vulnerable. Visible watermark images can be enhanced by multiple invisible watermarks. If image is tampered, the invisible watermark can be extracted. In case of multiple watermark, one watermark can be survived under different attacks. Usually, extraction is the first step for image authentication. Before extraction two images are fused using arithmetic blend extension method. The watermark extraction is done by reversing the process of arithmetic blend extension algorithm. As the result, we can get the original image and thewatermarked image
