混合基底记法的无失真图像信息隐藏技术的改进及实验研究

Mixed Base Notation Lossless Image Information Hiding Technology Improvements and Experimental

无失真信息隐藏技术,可以使一个原始图像在经过藏入、取出秘密信息之后依然完整存储,为了进一步改进压缩域图像信息隐藏方法,提出了一种基于混合基底记法的无失真图像信息隐藏技术。给出了应用的VQ编码、SMVQ编码的理论基础;完成了基于混合基底记法的信息隐藏的设计;应用6张512×512像素的灰度图片完成了实验结果验证。实验结果表明:新方法与传统的基于边缘匹配矢量量化编码方法相比,减少了秘密信息嵌入时间,提高了秘密信息嵌入容量。

Lossless information hiding technique that allows an original image after hiding in, still intact after removing confidential information stored, in order to further improve the compressed domain image information hiding method, a method based on hybrid substrate distortion-free image in mind information hiding technology is proposed, the application of VQ encoding and SMVQ coding theory were given ; basement notation based on hybrid information hiding design was finished; applying 6 pieces of 512 × 512 pixel grayscale images, the experimental results demonstrate were completed. Experimental results show that： the new method and the traditional edge matching based on vector quantization coding method, reducing the secret information embedding time, improve the secret information embedding capacity.