Journal of Computer Applications ›› 2026, Vol. 46 ›› Issue (1): 144-151.DOI: 10.11772/j.issn.1001-9081.2025020144

• Cyber security • Previous Articles     Next Articles

Deep compressive sensing network for IoT images and its chaotic encryption protection method

Yingjie MA, Jingying QIN(), Geng ZHAO, Jing XIAO   

  1. Department of Electronic and Communication Engineering,Beijing Electronic Science and Technology Institute,Beijing 100070,China
  • Received:2025-02-18 Revised:2025-05-25 Accepted:2025-05-28 Online:2026-01-10 Published:2026-01-10
  • Contact: Jingying QIN
  • About author:MA Yingjie, born in 1979, Ph. D., associate professor. Her research interests include chaotic secure communication.
    ZHAO Geng, born in 1964, Ph. D., professor. His research interests include chaotic cryptography.
    XIAO Jing, born in 1998, Ph. D. candidate. His research interests include model security.
  • Supported by:
    National Natural Science Foundation of China(62441208);Fundamental Research Funds for the Central Universities(3282024060)

面向物联网图像的深度压缩感知网络及其混沌加密保护方法

马英杰, 覃晶滢(), 赵耿, 肖靖   

  1. 北京电子科技学院 电子与通信工程系,北京 100070
  • 通讯作者: 覃晶滢
  • 作者简介:马英杰(1979—),女,吉林通化人,副教授,博士,主要研究方向:混沌保密通信
    赵耿(1964—),男,四川苍溪人,教授,博士,主要研究方向:混沌密码
    肖靖(1998—),男,湖南长沙人,博士研究生,主要研究方向:模型安全。
  • 基金资助:
    国家自然科学基金资助项目(62441208);中央高校基本科研业务费专项资金资助项目(3282024060)

Abstract:

Concerning the problem that the transmission and storage of massive redundant image data in Internet of Things (IoT) lead to high resource consumption and potential privacy leakage, a Deep Compressive Sensing (DCS) network for IoT images and its chaotic encryption protection method were proposed. Firstly, an improved DCS network was proposed to achieve high-quality image compression and reconstruction. In this network, residual blocks in conventional deep reconstruction network were modified using a channel attention mechanism, and a parallel fusion design integrating multi-scale branches and a fusion module was adopted, thereby improving the reconstruction performance of traditional deep reconstruction network based on residual stacking in convolutional layers. Secondly, a multi-cavity chaotic system was proposed to realize spherical cavity expansion in the XY, or Z direction — either in one direction or both directions — through spherical coordinate transformation and two sets of parity-controlled step functions. This system has chaotic properties and randomness, making it suitable for image encryption. Finally, based on the proposed DCS network and the multi-cavity chaotic system, encryption and decryption for DCS measured images was designed using chaotic index scrambling and diffusion, and detailed security analysis was conducted, thereby guaranteeing the security of image transmission. Experimental results show that compared with the classical DCS method CSNet+, the proposed network achieves an average increase of 0.606 dB (0.25-1.42 dB) in Peak Signal-to-Noise Ratio (PSNR) and an average 1.11 percentage point (0.69-2.17 percentage point improvement in Structural Similarity Index Measure (SSIM).

Key words: Deep Compressive Sensing (DCS), attention mechanism, multi-scale, multi-cavity chaotic system, chaotic encryption

摘要:

针对物联网大量冗余图像数据的传输和存储带来的高资源需求和隐私泄露隐患问题,提出一种面向物联网图像的深度压缩感知(DCS)网络及其混沌加密保护方法。首先,提出一种改进的DCS网络用于图像的高质量压缩重构,该网络通过通道注意力机制改进传统深度重构网络中的残差块,并结合多尺度分支与融合模块进行并行融合设计,改进了传统的基于卷积层残差堆叠的深度重构网络的重构性能;其次,提出一种腔体混沌系统通过球坐标变换和2组奇偶控制的阶梯函数实现球形腔体在XYZ任意单方向或者双方向的腔体拓展,具有较好的混沌特性和随机性,可有效用于图像加密;最后,结合提出的DCS网络和多腔体混沌系统,基于混沌索引置乱和扩散方法对DCS的测量图像进行加解密设计,并进行详细的安全性分析,从而保证图像传输的安全性。实验结果表明,相较于DCS的经典方法CSNet+,该DCS网络重构图像的峰值信噪比(PSNR)平均增长了0.606 dB(0.25~1.42 dB),结构相似性指数(SSIM)平均提高了1.11个百分点(0.69~2.17个百分点)。

关键词: 深度压缩感知, 注意力机制, 多尺度, 多腔体混沌系统, 混沌加密

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