基于整数变换的无损隐秘传输方法仿真研究

描述了一种基于整数线性变换和排序的无损隐秘传输方法仿真。该方法通过计算可修改矢量区域的象素相近性,并对其排序;自适应选取低失真的可修改矢量进行整数线性变换后嵌入秘密信息,较好地提高了嵌入容量和嵌入后图像质量。该方法已在局域网上进行了仿真实验,获得了较好的结果,可成功地将秘密信息隐藏在图像信息中,通过局域网进行隐秘传输,提取秘密信息后,原宿主数据可无损恢复。

Research on Reversible Covert Communication Based on Integer Transform

A reversible covert communication method based on integer linear transform and sorting was proposed. The near character of pixels can be calculated and sorted. After the adaptively selected less distorted revisable vector is transformed by integer linear transform,secret information is embedded by pair-check modulation. It has greater capacity of secret message and better quality of stego-image. The method was simulated by computers and got expectant results. The algorithm was applied to covert communication of image hidden secret information. Stego-image was transmitted in local area networks and the original image could be restored without any distortion after hidden secret information was extracted.