A Hardware Efficient Robust Digital Image Watermarking Algorithm Using Integer DCT
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2015 by IJETT Journal|
|Year of Publication : 2015|
|Authors : Gaurav Gupta, Kanika Sharma
|DOI : 10.14445/22315381/IJETT-V25P216|
Gaurav Gupta, Kanika Sharma"A Hardware Efficient Robust Digital Image Watermarking Algorithm Using Integer DCT", International Journal of Engineering Trends and Technology (IJETT), V25(2),89-95 July 2015. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
Online watermarking of digital images is successful in avoiding offline attacks. The critical need of real time watermarking is speed and it can be achieved by using a hardware which is dedicated for this very purpose only. The proposed research work presents VLSI architecture for embedding a binary watermark image into an 8-bit gray scale image. The proposed watermarking algorithm uses integer DCT and is robust to various image processing attacks. The watermark is retrieved using the same hardware. The performance of the algorithm is verified using MATLAB by the improved values of MSE, PSNR, NC and TAF. The hardware efficiency of the algorithm is judged and verified in terms of device utilization parameters and delay. The proposed VLSI architecture is implemented on Spartan 3E FPGA and simulated using XILINX ISE9.1.
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Real Time Watermarking, VLSI Architecture, Integer DCT, Robust Image Watermarking