一种基于图像的无损隐秘传输方法  

A Lossless Covert Communication Method Based on Image

作　　者：谢于明[1] 程义民[1] 张玲[1] 汪云路[1] 

机构地区：[1]中国科学技术大学电子科学与技术系,安徽合肥230027

出　　处：《光电子．激光》2007年第9期1112-1115,1123,共5页Journal of Optoelectronics·Laser

摘　　要：提出了一种新的基于预测编码的图像无损隐秘传输方法。该方法用线性预测误差扩展和嵌入/提取算法,在图像无损编码压缩过程中嵌入大数据量的秘密信息,提取秘密信息后,原宿主图像信息能无损恢复。该方法已在局域网上进行了实验,结果表明,与以往的无损嵌入算法相比,其提高了秘密信息的可嵌入容量,且对隐藏信息后的图像质量影响较小。A novel lossless covert communication method based on predictive coding for image is presented. The method uses a linear predicitve error algorithm and a embedding/extracting algorithm. A great deal of secret messages are embedded during the lossless compression. The original host image is restored without any distortion from the marked image after the hidden data is retrieved. The proposed method has greater capacity of secret message and gets less effect of quality of marked image compared with other algorithms. The experimental reshs have been given in local networks. The method has been ap- plied to secure stroage and covert communication for infrared, remote-sensing,medical and military Jmages.

关 键 词：无损 嵌入/提取 隐秘传输 预测编码 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]