Copyright Protection by Watermarking for Color Images against Rotation and Scaling Attacks Using Coding and Synchronization of Peak Locations in DFT Domain
نویسندگان
چکیده
The proposed method for copyright protection of color images against rotation and scaling attacks is described. The main idea is to embed a watermark as coefficient-value peaks circularly and symmetrically in the middle band of the DFT domain of an input image. Then, by detecting the peaks in the DFT domain, the embedded watermark can be extracted.
منابع مشابه
Copyright Protection by Watermarking for Color Images against Rotation and Scaling Attacks Using Peak Detection and Synchronization in Discrete Fourier Transform Domain
∗ This work was supported partially by the NSC 92-2422-H009-010 ABSTRACT A watermarking method for copyright protection of color images against rotation and scaling attacks is proposed. A watermark is embedded in an input image as coefficient-value peaks circularly and symmetrically distributed in a middle band of the discrete Fourier transform (DFT) domain of the input image. By detecting the ...
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تاریخ انتشار 2009