期刊名称：International Journal of Computer Science and Network Security
印刷版ISSN：1738-7906
出版年度：2012
卷号：12
期号：6
页码：1-9
出版社：International Journal of Computer Science and Network Security
摘要：Nowadays, with the rapid growth of technologies and the prevalence of network communication, new challenges raises to protect the multimedia data transmission on the World Wide Web (internet). Data security is one of the main important needs these days, especially in the field of remote sensing. Emirates Institutions for Advanced Science and Technology (EIAST) as an example, provides a satellite images captured by DubaiSat-1 satellite to customers inside the UAE including government agencies, universities, research centers, and distributed also outside the region. To deal with the issue of data security, the concept of watermarking has been introduced. The idea of watermarking is to embed a secret message, watermark inside an image and to increase the digital data security. The aim of this study is to hide an entire pattern as a watermark such as an organization��s logo (or trademark) directly into the original DubaiSat-1 satellite image. This will prevent any unauthorized manipulation to the image data. This secret watermark is used for copyright protection and ownership authentication for (EIAST). This study will be based on Discrete Cosine Transform (DCT) to provide an excellent protection and highly robust under flipping, noise, resize and rotation attacks.
关键词：Watermarking; EIAST; Discrete Cosine Transform (DCT); Peak
Signal to Noise Ratio(PSNR); DubaiSat-1 Satellite; attacks
