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Entropy based Robust Watermarking Scheme using Hadamard Transformation Technique
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 12 - Number 9 |
| Year of Publication: 2011 |
| Authors: Franklin Rajkumar.V, Manekandan.GRS, V.Santhi |
10.5120/1712-2293
|
Franklin Rajkumar.V, Manekandan.GRS, V.Santhi . Entropy based Robust Watermarking Scheme using Hadamard Transformation Technique. International Journal of Computer Applications. 12, 9 ( January 2011), 14-21. DOI=10.5120/1712-2293
Abstract
In this paper, entropy based robust watermarking scheme using Hadamard transformation technique is proposed. The proposed technique can hide an entire image or pattern as a watermark directly into the original image. As the quality of the image is to be preserved the entire image is not altered for embedding, instead few blocks are used based on the size of the watermark and information content of an image block. To reduce the computational complexity of the proposed algorithm Hadamard transformation is used for converting cover image from spatial domain to transform domain. The proposed algorithm is tested with Lena grey scale image of size 256x256 and watermark of size 64x64 using mat lab software. The experimental results show that the proposed scheme is robust to random noise addition attack, resize attack and cropping attack.
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