计算机与现代化

• 图像处理 • 上一篇    下一篇

基于改进CoSaMP算法的图像重建

  

  1. (1.东北石油大学电气信息工程学院,黑龙江 大庆 163318; 2.大庆油田测试技术服务分公司,黑龙江 大庆 163453)
  • 收稿日期:2015-01-21 出版日期:2015-05-18 发布日期:2015-05-18
  • 作者简介:刘继承(1970-),男,陕西西安人,东北石油大学电气信息工程学院教授,博士,研究方向:信号的采集与处理,地震信号重建; 王敏莹(1988-),女,硕士研究生,研究方向:应用压缩感知理论进行信号重建; 李浩然(1990-),男,大庆油田测试技术服务分公司助理工程师,本科,研究方向:信号处理。
  • 基金资助:
    黑龙江省自然科学基金资助项目(201404)

Image Reconstruction Based on Improved CoSaMP Algorithm

  1. (1. College of Electrical and Information Engineering, Northeast Petroleum University, Daqing 163318, China; 2. Daqing Logging and Testing Services Branch, Daqing 163453, China)
  • Received:2015-01-21 Online:2015-05-18 Published:2015-05-18

摘要: 重构算法是压缩感知的核心技术之一,直接决定着压缩感知能否可以在实际系统中进行应用。为提高压缩感知的重构精度同时缩短处理时间,本文引进加权与矩阵分块技术,与压缩采样匹配追踪(Compressive Sampling Matching Pursuit, CoSaMP)算法相结合,使原始算法更加完善。仿真结果表明,当稀疏条件同等的情况下进行重构,改进的算法与原始算法相比重构质量有所提高。

关键词: 压缩感知, 重构算法, 压缩采样匹配追踪, 加权, 矩阵分块

Abstract: Reconstruction algorithm is one of the points of compressed sensing. It determines compressed sensing whether can be applied in the real system. The paper combines compressive sampling matching pursuit (CoSaMP) algorithm with weighted block matrix technology in order to improve the accuracy of compressed sensing reconstruction, shorten the processing time and make the original algorithm more perfect. The paper compares the improved algorithm with the existing algorithms by simulation experiments which approve that the new algorithm improves the reconstruction quality under the same sparse condition.

Key words: compressed sensing, reconstruction algorithm, compressive sampling matching pursuit, weighted, block matrix

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