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Title |
Robust Digital Watermarking Scheme using Contourlet Transform |
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Author |
B.Chandra Mohan, S.Srinivas Kumar |
| Citation |
Vol. 8 No. 2 pp. 43-51 |
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Abstract |
A novel oblivious and highly robust watermarking scheme using Multiple Descriptions (MD) and Quantization Index Modulation (QIM) of the host image is presented in this paper. The watermark is embedded in the Discrete Contourlet Transform domain (CT). Discrete Countourlet Transform (CT) is able to capture the directional edges and contours superior to Discrete Wavelet Transform (DWT). Watermark embedding is done at two stages for achieving robustness to various attacks. This algorithm is highly robust for different attacks on the watermarked image and superior in terms of Peak Signal to Noise Ratio (PSNR) and Normalized Cross correlation (NC). |
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Keywords |
Digital image watermarking, Contourlet Transform, Multiple description coding, dither quantization |
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