计算机与现代化
計算機與現代化
계산궤여현대화
COMPUTER AND MODERNIZATION
2015年
5期
48-52
,共5页
刘继承%王敏莹%李浩然
劉繼承%王敏瑩%李浩然
류계승%왕민형%리호연
压缩感知%重构算法%压缩采样匹配追踪%加权%矩阵分块
壓縮感知%重構算法%壓縮採樣匹配追蹤%加權%矩陣分塊
압축감지%중구산법%압축채양필배추종%가권%구진분괴
compressed sensing%reconstruction algorithm%compressive sampling matching pursuit%weighted%block matrix
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 Pur-suit， 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。
重構算法是壓縮感知的覈心技術之一，直接決定著壓縮感知能否可以在實際繫統中進行應用。為提高壓縮感知的重構精度同時縮短處理時間，本文引進加權與矩陣分塊技術，與壓縮採樣匹配追蹤（ Compressive Sampling Matching Pur-suit， CoSaMP）算法相結閤，使原始算法更加完善。倣真結果錶明，噹稀疏條件同等的情況下進行重構，改進的算法與原始算法相比重構質量有所提高。
중구산법시압축감지적핵심기술지일，직접결정착압축감지능부가이재실제계통중진행응용。위제고압축감지적중구정도동시축단처리시간，본문인진가권여구진분괴기술，여압축채양필배추종（ Compressive Sampling Matching Pur-suit， CoSaMP）산법상결합，사원시산법경가완선。방진결과표명，당희소조건동등적정황하진행중구，개진적산법여원시산법상비중구질량유소제고。
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 experi -ments which approve that the new algorithm improves the reconstruction quality under the same sparse condition .
