文章基本信息

标题：An Adaptive Gray Scale Watermarking Method in Wavelet Domain
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作者：Jialing Han ; Xiaohui Zhao
期刊名称：International Journal of Security and Its Applications
印刷版ISSN：1738-9976
出版年度：2015
卷号：9
期号：10
页码：103-114
DOI：10.14257/ijsia.2015.9.10.09
出版社：SERSC
摘要：In the past a few years, many watermarking approaches have been proposed for solving the copyright protection problems. This paper presents a new gray scale watermarking method in wavelet domain based on the compression of the watermark and the pretreatment of the original image. Through the compression of watermark, it can greatly reduce the embedding capacity of the watermark, which can embed more watermark bits in the host image. Through the preprocessing of the original image based on human visual system's characteristic, it can ensure the imperceptibility. The use of threshold T can adaptively determine the quantity of embedded blocks, and control the capacity of embedded secret information. The experimental results show that our method has an excellent transparency and robustness.
关键词：Watermark compression; image preprocessing; discrete wavelet transform