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：2019
卷号：7
期号：2
页码：868-875
DOI：10.15680/IJIRCCE.2019. 0702064
出版社：S&S Publications
摘要：In this paper, proposed a reversible image watermarking method based on contrast mapping. This
algorithm accomplishes transform applied on pixels and their least significant bits are used for data embedding. It is
invertible if the least significant bits of the transformed pixels are lost during data embedding. Reversible contrast
mapping offers high embedding data at low visual distortion. Distortion caused due to embedding should be made
small. This lead to the original and the watermarked image equivalent so that embedded data remains imperceptible on
visualization. These type of imperceptible distortion is not acceptable in medical and military image. This has led to an
interest on reversible watermarking, where the embedded watermark is not only extracted but also perfect restoration of
the original signal is possible from the watermarked image. Low computation cost and ease of semicustom make it
attractive for real time implementation.
