Abstract
We present an image data-hiding scheme based on near-capacity dirty-paper codes. The scheme achieves high embedding rates by "hiding" information into mid-frequency DCT coefficients among each DCT block of the host image. To reduce the perceptual distortion due to data-hiding, the mid-frequency DCT coefficients are first perceptually scaled according to Watson's model. Then a rate-1/3 projection matrix in conjunction with a rate-1/5 capacity-approaching dirty-paper code is applied. We are able to embed 1500 information bits into 256 x 256 images, outperforming, under a Gaussian noise attack, currently the best known data-hiding scheme by 33%. Robustness tests against different attacks, such as low-pass filtering, image scaling, and lossy compression, show that our scheme is a good candidate for high-rate image data-hiding applications.
Original language | English |
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DOIs | |
Publication status | Published - Jan 2006 |
Event | Conference on Security, Steganography and Watermarking of Multimedia Contents VIII - San Jose, United States Duration: 16 Jan 2006 → 19 Jan 2006 |
Conference
Conference | Conference on Security, Steganography and Watermarking of Multimedia Contents VIII |
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Country/Territory | United States |
City | San Jose |
Period | 16/01/06 → 19/01/06 |
Keywords
- image
- data-hiding
- capacity-approaching
- dirty-paper coding
- watermarking
- robustness
- perceptual shaping