| 向量量化图象中的信息搭载 |
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| 引用本文： | 林行良,苏中民,王庆,戴一奇. 向量量化图象中的信息搭载[J]. 清华大学学报(自然科学版), 1997, 0(4) |
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| 作者姓名： | 林行良 苏中民 王庆 戴一奇 |
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| 作者单位： | 清华大学计算机科学与技术系 |
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| 摘 要： | 让信息承载者增载另一种信息的方式称为信息搭载，它是为实现信息隐蔽而提出的。基于相似性的搭载模型是实现信息隐蔽的一般框架。由于图象通常以压缩格式存储和传输，因此把数据压缩与信息搭载结合是使其实用化的关键技术。针对向量量化这种常用的图象压缩方法，设计了两类信息搭载方案，并对参数取值的不同情况进行了实验比较。说明了信息搭载的可行性。
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| 关 键 词： | 图象压缩；向量量化；数据安全；信息搭载 |
Information carrying in vector quantized images |
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| Lin Xingliang,Su Zhongmin,Wang Qing,Dai Yiqi. Information carrying in vector quantized images[J]. Journal of Tsinghua University(Science and Technology), 1997, 0(4) |
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| Authors: | Lin Xingliang Su Zhongmin Wang Qing Dai Yiqi |
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| Affiliation: | Lin Xingliang,Su Zhongmin,Wang Qing,Dai Yiqi Department of Computer Science and Technology,Tsinghua University,Beijing 100084 |
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| Abstract: | The procedure to append another kind of information to the media carrying a certain kind of information is called information carrying. It is proposed for the concealment of confidential information. The information carrying model based on similarity is a common frame for information carrying. Since the images are usually stored and transmitted in the compressed form, so it is a key technique to combine image compression with information carrying for practical use. Two kinds of information carrying schemes for vector quantization are designed, and the experimental results of different cases are compared. The feasibility of information carrying is indicated. |
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| Keywords: | image compression vector quantization data security information carrying |
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