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In applications to secured diffusion of digital images, several watermarking solutions have been studied in the field of Data Hiding. For this aim, the main idea consists in embedding an information in the digital media with good properties in terms of robustness, capacity and invisibility (perceptual transparency and statistical undetectability). Recent studies has highlighted the importance of statistical...
The Spread Transform (ST) robustness facing a Temporal Frame Averaging (TFA) is studied in this paper. Our analysis provides new insights on the effect of the TFA attack in the context of video watermarking when the ST is used. To remove the interferences and the attenuation of the watermark caused by the TFA attack, an adaptation of the Spread Transform is proposed. Our solution is based on the embedding...
In this paper, security evaluation of an important watermarking class based on quantization is given. Theoretical developments and practical simulations are used to measure the security level of watermarking techniques. We give the contribution of each observation available to the attacker on the total gathered information about the watermarking secrecy. By leading on watermarking technique weaknesses,...
The quantization based embedding systems are usually used in the information hiding domain, thanks to their efficiency and simplicity. In other hand, they are known to be insecure in steganography context (according to Cachins' security definition) because they distort the stego-signal density function. In this paper, we show that an important kind of quantization based systems (those resulting from...
In this paper, we studied the performances of the well known side information watermarking scheme, Scalar Costa Scheme (SCS), in independent domain. We have used the Independent Component Analysis (ICA) to insert and extract the message. Thus, we improve the performances compromise of the original SCS scheme in terms of robustness, capacity, and undetectability. In our study, we also compare the obtained...
Several authors have studied stego-systems based on Costa scheme, but just a few ones gave both theoretical and experimental justifications of these schemes performance in an active warden context. We provide in this paper a steganographic and comparative study of three informed stego-systems in active warden context: scalar Costa scheme, trellis-coded quantization and spread transform scalar sosta...
The steganographic security in the Cachin's work is defined as the statistical invisibility between the host signal and its marked version. At contrary, the robustness to an attack is not a prime goal. In robust watermarking, this is exactly the inverse. The scalar costa scheme (SCS) is a typical example of this fact. Indeed, this scheme is robust to additive white Gaussian noise (AWGN) attack but...
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