Abstract
The present work explains the design and implementation of the difference expansion method based reversible image watermarking using Xilinx System Generator and MATLAB. The method represents structural design for hiding information bits into the cover image by depending on the difference of neighborhood pixels of the cover image. The MATLAB-Simulink and Xilinx System Generator tools are a most preferable choice to improve the progress time and hardware resources by reducing the complication of image representation over FPGA environment. The reversible image watermarking using difference expansion is verified by taking a (4 × 4) sized test image and can be applicable for the larger size of cover images. The outcome of the results shows that the MATLAB-Simulink and Xilinx System Generator can be combined all the way through the graphical user interface by proposed structural design for image processing applications.
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