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Image Authentication based on DCT transform watermarking | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 22, Issue 5, 2011, Pages 456-463 | ||
| Author | ||
| Musaab R. Abdulrazzaq | ||
| Abstract | ||
| Digital image can easily be tampered and destroyed by some people with malice. Therefore, the protection of digital information transmitted on a network has become an important research topic in recent years. The major goal of image authentication is to detect the tampered regions to achieve the authenticity and integrity. In this paper one watermark bit will be embedded in each DCT block by shifting a randomly selected coefficient to have a mapped value, in a coefficient-binary-mapping function that is identical to the watermark bit. The method was tested under different attacks and was found to provide good detection performance while maintaining the quality of the watermarked image. | ||
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