二值稀疏源压缩感知的率失真性能分析

Feng Wu, Jingjing Fu, Zhouchen Lin, B. Zeng
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引用次数: 16

摘要

本文提出用二部图来表示压缩感知(CS)。二部图中节点和边的演化过程等效于压缩感知的解码过程,用一组微分方程来表征。本文的主要贡献之一是我们推导出了统计演化的封闭形式公式,这使我们能够更准确地分析压缩感知的性能。在此基础上,简要分析了随机抽样的失真和编码测量所需的速率。最后,通过数值实验验证了我们的演化公式,并绘制了压缩感知的速率失真曲线,并与熵编码进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analysis on Rate-Distortion Performance of Compressive Sensing for Binary Sparse Source
This paper proposes to use a bipartite graph to represent compressive sensing (CS). The evolution of nodes and edges in the bipartite graph, which is equivalent to the decoding process of compressive sensing, is characterized by a set of differential equations. One of main contributions in this paper is that we derive the close-form formulation of the evolution in statistics, which enable us to more accurately analyze the performance of compressive sensing. Based on the formulation, the distortion of random sampling and the rate needed to code measurements are analyzed briefly. Finally, numerical experiments verify our formulation of the evolution and the rate-distortion curves of compressive sensing are drawn to be compared with entropy coding.
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