Performance analysis of double watermarked image transmission over the Rician turbulence FSO channel was carried out in this paper. First, we have considered the importance of copyright, robustness of watermark in FSO transmission and presented some algorithms for watermarking. Then, simulation of FSO transmission of double watermarked image over Rician channels has been carried out and obtained simulation results have been shown graphically. Quality of the extraction of the primary watermark and the secondary watermark was discussed in the function of FSO channel link parameter K value.
Index Terms-FSO transmission; Rician channels;watermarking, image processing; discrete wavelet transforms.
The first part of the paper describes the parameterization of the fifth-degree polynomial convolutional interpolation kernel. In this way, a two-parameter interpolation kernel is created. The second part of the paper describes an experiment in which the interpolation of some test images, using the one-parameter and the proposed two-parameter kernel, is performed. Some standard Test images, which are frequently used in digital image processing, were used in the experiment. Interpolation errors were determined using MSE. After that, the results of the experiment are presented using graphs and tables. Finally, a detailed comparative analysis, which shows the higher precision of the interpolation with the proposed two-parameter fifth-degree interpolation kernel, is presented.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.