[1]王韦刚 庄伟胤.基于NIOS Ⅱ的图像压缩感知[J].计算机技术与发展,2012,(04):12-15.
　WANG Wei-gang,ZHUANG Wei-yin.Compressed Sensing of Image Based on NIOS Ⅱ[J].,2012,(04):12-15.
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基于NIOS Ⅱ的图像压缩感知()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2012年04期
页码:
12-15
栏目:
智能、算法、系统工程
出版日期:
1900-01-01

文章信息/Info

Title:
Compressed Sensing of Image Based on NIOS Ⅱ
文章编号:
1673-629X（2012）04-0012-04
作者:
王韦刚 庄伟胤
南京邮电大学电子科学与工程学院
Author(s):
WANG Wei-gang; ZHUANG Wei-yin
College of Electronic Science ＆ Engineering,Nanjing University of Posts and Telecommunications
关键词:
压缩感知; 稀疏表示; 观测矩阵; 正交匹配追踪算法
Keywords:
compressed sensing;  sparse representation;  measurement matrix;  OMP
分类号:
TP31
文献标志码:
A
摘要:
压缩感知（CS）是近年来提出的一种针对稀疏信号处理的新方法,其核心是将压缩与采样同步进行,由于信号的投影测量数据远小于传统方法的数据量,突破了香农采样定理瓶颈从而使得高分辨率信号采集成为可能。NIOSⅡ嵌入式处理器是ALTERA公司推出的第二代片上可编程软核处理器,它的灵活性与可裁减性使其适用于终端数据处理。正交匹配追踪（OMP）算法是压缩感知理论中用于重构的经典算法,针对该算法对图像重构计算时需要大量存储空间并耗时巨大的问题,文中提出了图像分块压缩的改进方案;针对OMP算法重构时图像列与列之间数据相关性被割裂的现象,提出了图像均衡行列值的改进算法。实际系统运行结果显示两种改进方案均取得了良好效果
Abstract:
Compression Sensing（CS） is a new theory in sparse signal processing field which was proposed in recent years.It combines the signal compression and sampling simultaneously.It breaks through the bottlenecks of Shannon sampling theorem and makes the high resolution signal acquisition possible since the signal measurement data is far less than the data of the conventional method.Developed by ALTERA company,NIOS Ⅱ embedded processor is the second generation of the programmable soft core processor with its flexibility suiting for terminal data processing.Orthogonal Matching Pursuit（OMP） is a classical algorithm of reconstruction in CS theory.The problem that image reconstruction needs large storage and time is solved by proposing image dividing compressed scheme.Considering the relativity is disserved between columns when reconstructing the original image,proposed an algorithm by equalizing the data of image in rows and columns.Results in actual system show that these two improvements have achieved good effects

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备注/Memo

备注/Memo:
南京邮电大学科研项目基金（NY210038）王韦刚（1975-），男，硕士，讲师，研究方向为计算机应用及通信信号处理
更新日期/Last Update: 1900-01-01