文章基本信息

标题：An Efficient Method for Digital Image Watermarking Based on PN Sequences
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作者：Shivani Garg ; Ranjit Singh
期刊名称：International Journal on Computer Science and Engineering
印刷版ISSN：2229-5631
电子版ISSN：0975-3397
出版年度：2012
卷号：4
期号：09
页码：1550-1561
出版社：Engg Journals Publications
摘要：In the recent times, the rapid and extensive growth in Internet technology is creating a pressing need to develop several newer techniques to protect copyright, ownership, authentication and content integrity of digital media. A potential solution to this kind of problem is digital watermarking. Numerous methods have been presented in the literature and several watermarking software packages have been developed. Still robustness and security of watermark against a variety of attacks is one of the most important issues to be solved. In this paper, Discrete wavelet transform is used to provide robustness and spread spectrum technique is used to provide security. The results are evaluated by applying number of attacks.
关键词：Haar Wavelet; M-sequences; Gold Sequences; Kasami sequences; PSNR; NCC