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一种基于图像矢量量化压缩的数据隐藏方法 被引量:7

Data Hiding Method Based on VQ_Compressed Images
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摘要 根据码书中所有码字之间的最近邻关系,采用最近邻方法标记码书使得所有码字与其最近邻码字的标记值不同。在此基础上,运用I/矩阵运算可在矢量量化压缩图像的每n=2m个码字索引中有选择地最多修改「m/2」个从而嵌入m比特数据。计算机上的仿真实验结果表明:该方法不仅具有较大的嵌入容量,而且具有较好的隐蔽性,可用于矢量量化压缩图像中的信息隐藏。 According to the nearest relationship, the labeled value of every codeword in the labeled codebook by the nearest neighbor method was different from its nearest codeword, based on which, using 1/3 matrix, as many as m bits data can be embedded by selectively changing at most [m/2] indexes in every n = 2m VQcompressed indexes. The simulated results by the computer showed that the method used for information hiding in VQ_compressed images has larger capacity and better secrecy.
出处 《中国图象图形学报》 CSCD 北大核心 2009年第6期1096-1101,共6页 Journal of Image and Graphics
基金 福建省青年科技人才创新项目(2006F30086) 华侨大学科研基金项目(06BS217 07HZR28)
关键词 数据隐藏 矢量量化 最近邻方法 I/矩阵 data hiding, vector quantization, nearest neighbor method, I/I matrix
作者简介 邱应强(1981-),男。华侨大学信息科学与工程学院讲师,2006年于中国科学技术大学获电路与系统专业硕士学位。研究方向为信息隐藏、图像处理等。E-mail:yqqiu@hqu.edu.cn
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参考文献11

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二级参考文献28

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