基于光学空频域变换的自适应图像分块隐藏技术  

Adaptive Image Block Hiding Technology Based on Optical Spatial-Frequency Domain Transform

作　　者：王岩 牛宏伟 Wang Yan;Niu Hongwei(Shanghai JoyReal Information Technology Co.,Ltd.,Shanghai 201112,China;OTTO Intelligent Technology Haian Co.,Ltd.,Haian,Jiangsu 226600,China)

机构地区：[1]上海军睿信息技术有限公司,上海201112 [2]拾贰叁零智能科技(海安)有限公司,江苏海安226600

出　　处：《激光与光电子学进展》2021年第16期154-162,共9页Laser & Optoelectronics Progress

基　　金：上海市软件和集成电路产业发展专项资金。

摘　　要：针对信息隐藏技术中大容量信息嵌入会导致隐蔽性和鲁棒性降低的问题,提出了一种基于光学空频域变换的自适应图像分块隐藏技术。利用灰色关联分析和回声状态网络构成自适应嵌入机制,当嵌入容量达到饱和阈值时,该机制会根据灰度关联序自动调整嵌入位置,保证鲁棒性不会大幅下降;在此基础上采用二维离散余弦变换对图像进行空频域互换,结合人眼对光学高频区域不敏感的特性实现信息在变换域的隐藏,保证隐蔽性不受影响。仿真和对比实验证明:大容量信息嵌入载体图像后视觉透视性未受影响;引入高斯、椒盐噪声干扰和旋转、缩放几何攻击后,结果表明,信息载体对噪声干扰和几何攻击不敏感。说明该技术在保证信息容量嵌入的同时也兼顾了隐蔽性和鲁棒性。Aiming at the problem of large-capacity information embedded in information hiding technology reducing the concealment and robustness,an adaptive image block hiding technology based on optical spatial-frequency domain transform was proposed.The gray-level correlation analysis and echo state network were used to form the adaptive embedding mechanism.When the embedding capacity reached the saturation threshold,the embedding position was automatically adjusted using the mechanism based on the gray-level correlation order to avoid excessive deterioration in robustness.Based on this,the two-dimensional discrete cosine transform was used to hide images in the spatial-frequency domain and combined with the human eye’s characteristic of insensitivity to the optical high-frequency area to realize information hiding in the transform domain,thereby ensuring that the concealment was not affected.Simulation and comparative experiments prove that the visual perspective is unaffected after large-capacity information is embedded in the carrier image.After introducing Gaussian and salt and pepper noise interference and rotating and zooming geometric attacks,results show that the information carrier is insensitive to noise interference and geometric attacks,indicating the technology ensures large-capacity embedding while considering concealment and robustness.

关 键 词：全息 光学空频域变换 灰色关联分析 回声状态网络 二维离散余弦变换 自适应分块隐藏 

分 类 号：O438.1[机械工程—光学工程]