期刊名称：BVICAM's International Journal of Information Technology
印刷版ISSN：0973-5658
出版年度：2012
卷号：4
期号：2
出版社：Bharati Vidyapeeth's Institute of Computer Applications and Management
摘要：Image watermarking is considered a powerful tool for Copyright protection, Content authentication, Fingerprinting and for protecting intellectual property. We present in this paper a watermarking algorithm based on block wise changing magnitude of DFT domain. This algorithm can be used as an application for copyright protection. To provide multi-level securities we have first used best self-synchronizing T-codes to encode the watermark. The encoded watermark is then embedded into the cover image using a stego-key. We have analyzed our algorithm against noise such as Salt and Pepper, Gaussian and Speckle.
