一类二值图像快速加密算法的压缩性能分析
doi: 10.3724/SP.J.1146.2008.01185
Compression Performance Analysis of a Sort of Fast Binary Image Encryption Algorithms
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摘要: 近年来，多媒体加密技术得到了广泛的研究，但是现有算法在分析加密算法的压缩性能时主要采用定性分析和实验检验的方式，未能实现对压缩性能的量化分析和控制，从而限制了该技术的应用。该文分别就MH编码，Huffman编码和自适应算术编码3种不同的编码方式，对一类常用的二值图像快速加密算法的压缩性能进行了定量分析。实验结果表明该文给出的压缩性能预测公式是准确的。
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关键词:
- 图像加密;快速加密;二值图像;MH编码
Abstract: Multimedia encryption algorithms are widely studied in recent years. However, the performances of those algorithms are usually checked by qualitative analysis and simulations. In this paper, the compression performance of a sort of encryption algorithms for binary image is analyzed quantitatively using information theories. It shows that those algorithms are good at performances including security, speed, compression ratio, robustness and format-compliance, and therefore suitable for practical use. -
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