1.中山大学计算机学院,广东 广州510006
2.广东省信息安全技术重点实验室,广东 广州510006
[ "周赛星(2001- ),女,广东深圳人,中山大学硕士生,主要研究方向为图像隐写。" ]
[ "叶苗欣(1999- ),女,广东珠海人,中山大学硕士生,主要研究方向为图像隐写。" ]
[ "骆伟祺(1980- ),男,广东广州人,博士,中山大学教授、博士生导师,主要研究方向为数字多媒体取证、图像隐写和图像隐写分析。" ]
收稿:2024-12-31,
修回:2025-03-19,
纸质出版:2025-10-25
移动端阅览
周赛星, 叶苗欣, 骆伟祺. ISEM:基于生成多对抗网络的图像隐写增强模型[J]. 网络与信息安全学报, 2025, 11(5): 126-136.
ZHOU S X, YE M X, LUO W Q. ISEM:image steganography enhancement model based on generative multi-adversarial network[J]. Chinese Journal of Network and Information Security, 2025, 11(5): 126-136.
周赛星, 叶苗欣, 骆伟祺. ISEM:基于生成多对抗网络的图像隐写增强模型[J]. 网络与信息安全学报, 2025, 11(5): 126-136. DOI: 10.11959/j.issn.2096-109x.2025053.
ZHOU S X, YE M X, LUO W Q. ISEM:image steganography enhancement model based on generative multi-adversarial network[J]. Chinese Journal of Network and Information Security, 2025, 11(5): 126-136. DOI: 10.11959/j.issn.2096-109x.2025053.
图像隐写技术根据在同一嵌入单元内
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的嵌入代价是否相等,通常分为对称隐写和非对称隐写。对称隐写技术未能充分利用相邻像素之间的相互关系,限制了隐写安全性的提升。非对称隐写技术虽能显著增强隐写的安全性,但在生成非对称嵌入代价的过程中,现有方法往往存在训练过程不稳定、依赖人工经验或预设参数等问题,难以确保隐写的安全性。针对上述问题,提出了一种基于生成对抗网络的图像隐写增强模型(image steganography enhancement model
ISEM)。生成器网络采用相对轻量级的双分支网络结构,判别器网络则由3个基于深度学习的隐写分析网络组成。ISEM的训练分为两个阶段。第一阶段学习载体图像与现有嵌入代价之间的映射关系;第二阶段通过对抗训练调整初步学习的嵌入代价,生成高安全性的非对称嵌入代价。此外,在生成器中引入几何均值损失,在判别器中引入均值绝对偏差损失,以进一步优化训练效果。实验结果表明,ISEM能够有效增强对称(以及非对称)隐写方法的安全性,其相较于现有的非对称隐写方法,具有更佳的平均安全性。
Image steganography techniques were typically categorized into symmetric and asymmetric types based on whether the embedding costs of +1 and -1 within the same embedding unit were equal. The interrelationship between adjacent pixels was not fully utilized by symmetric steganography techniques
which limited the enhancement of steganographic security. Although asymmetric steganography techniques were able to significantly improve security
existing methods were often faced with issues such as unstable training processes
reliance on manual experience
or dependence on preset parameters when generating asymmetric embedding costs
making it difficult to ensure steganographic security. To address these issues
an image steganography enhancement model (ISEM) based on a generative multi-adversarial network was proposed. A relatively lightweight dual-branch structure was adopted by the generator network
while the discriminator network was composed of three deep learning-based steganalysis networks. The training of ISEM was divided into two stages. In the first stage
the mapping relationship between the carrier image and existing embedding costs was learned. In the second stage
the initially learned embedding costs were adjusted through adversarial training to generate high-security asymmetric embedding costs. Additionally
a geometric mean loss was introduced in the generator
and a mean absolute deviation loss was incorporated in the discriminator to further optimize the training effect. Experimental results show that the security of both symmetric and asymmetric steganography methods are effectively enhanced by ISEM. Compared to existing asymmetric steganography methods
the highest average security is achieved by the proposed approach.
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