Paper title:

Robust multiple image watermarking scheme using discrete cosine transform with multiple descriptions

Published in: Issue 2, (Vol. 3) / 2009
Publishing date: 2009-10-20
Pages: 14-19
Author(s): Chandra Mohan B., Srinivas Kumar S.
Abstract. A novel oblivious and robust multiple image watermarking scheme using Multiple Descriptions (MD) and Quantization Index Modulation (QIM) of the host image is presented in this paper. Watermark embedding is done at two stages. In the first stage, Discrete Cosine Transform (DCT) of odd description of the host image is computed. The watermark image is embedded in the resulting DC coefficients. In the second stage, a copy of the watermark image is embedded in the watermarked image generated at the first stage. This enables us to achieve robustness to both local and global 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).
Keywords: Digital Multimedia, Embedded Algorithm,watermarking Scheme, Compressed Images.

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