International Journal of Modern Education and Computer Science (IJMECS)
IJMECS Vol. 4, No. 3, 8 Mar. 2012
Cover page and Table of Contents: PDF (size: 598KB)
Image Watermarking Using 3-Level Discrete Wavelet Transform (DWT)
Full Text (PDF, 598KB), PP.50-56
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Author(s)
Nikita Kashyap
1,*
G.R.Sinha
2
Index Terms
Image watermarking, 3-level DWT, wavelet transform, MSE, PSNR
Abstract
We have implemented a robust image watermarking technique for the copyright protection based on 3-level discrete wavelet transform (DWT). In this technique a multi-bit watermark is embedded into the low frequency sub-band of a cover image by using alpha blending technique. The insertion and extraction of the watermark in the grayscale cover image is found to be simpler than other transform techniques. The proposed method is compared with the 1-level and 2-level DWT based image watermarking methods by using statistical parameters such as peak-signal-to-noise-ratio (PSNR) and mean square error (MSE). The experimental results demonstrate that the watermarks generated with the proposed algorithm are invisible and the quality of watermarked image and the recovered image are improved.
Cite This Paper
Nikita Kashyap, G. R. SINHA, "Image Watermarking Using 3-Level Discrete Wavelet Transform (DWT)", International Journal of Modern Education and Computer Science (IJMECS), vol.4, no.3, pp.50-56, 2012. DOI:10.5815/ijmecs.2012.03.07
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