论文标题
基于抖动调制和修改并进行重新压缩的鲁棒自适应隐身摄影
Robust adaptive steganography based on dither modulation and modification with re-compression
论文作者
论文摘要
传统的自适应隐身术是一种用于高安全性秘密通信的技术，但是对于Stego图像的情况下，它通过网络将其发送给法律接收器，例如jpeg的频道压缩。为了解决此类问题，提出了强大的自适应隐身志，以使接收者从受损的Stego图像中提取秘密消息。先前的作品利用逆向工程和抗压域构造来实现强大的自适应隐肌。在本文中，我们采用重新压缩方案的修改来改善Stego图像中Stego序列的鲁棒性。为了平衡安全性和鲁棒性，我们将嵌入域移动到DCT（离散余弦变换）系数的低频区域，以提高稳健自适应隐肌的安全性。此外，我们添加了其他检查代码，以进一步降低基于E-DMA的框架（增强基于抖动调制的强大自适应隐肌的框架）的平均提取错误率。与GMA（基于广义抖动调制的鲁棒自适应隐肌）和E-DMA相比，实验结果表明，当已知通道质量因子时，我们的方案可以实现强大的鲁棒性并提高鲁棒自适应隐肌的安全性。
Traditional adaptive steganography is a technique used for covert communication with high security, but it is invalid in the case of stego images are sent to legal receivers over networks which is lossy, such as JPEG compression of channels. To deal with such problem, robust adaptive steganography is proposed to enable the receiver to extract secret messages from the damaged stego images. Previous works utilize reverse engineering and compression-resistant domain constructing to implement robust adaptive steganography. In this paper, we adopt modification with re-compression scheme to improve the robustness of stego sequences in stego images. To balance security and robustness, we move the embedding domain to the low frequency region of DCT (Discrete Cosine Transform) coefficients to improve the security of robust adaptive steganography. In addition, we add additional check codes to further reduce the average extraction error rate based on the framework of E-DMAS (Enhancing Dither Modulation based robust Adaptive Steganography). Compared with GMAS (Generalized dither Modulation based robust Adaptive Steganography) and E-DMAS, experiment results show that our scheme can achieve strong robustness and improve the security of robust adaptive steganography greatly when the channel quality factor is known.
