[1]ZHAO Chunhui,LIU Wei.Compressive sensing theory and its application in imaging technology[J].CAAI Transactions on Intelligent Systems,2012,7(1):21-32.
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CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
7
Number of periods:
2012 1
Page number:
21-32
Column:
学术论文—机器感知与模式识别
Public date:
2012-02-25
- Title:
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Compressive sensing theory and its application in imaging technology
- Author(s):
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ZHAO Chunhui; LIU Wei
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College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China
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- Keywords:
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compressive sensing (CS); compressive imaging (CI); sparse decomposition; measurement matrix; reconstruction algorithm
- CLC:
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TP391.41;TN911.73
- DOI:
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- Abstract:
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Under the guidance of the traditional Shannon/Nyquist sampling theorem, signal processing often faces two problems: technology limitation of the A/D converter and processing pressure caused by a mass of sampled data. Compressive sensing (CS) theory suggests that when the signal is sparse or compressible, by means of global nonadaptive linear projection, all the signal information can be obtained with the samples much less than the sampling theorem required. CS theory based compressive imaging (CI) technology has been developed significantly in recent years. This paper first reviewed the principles of CS, and on this basis, discussed the theory and development of CI technology. The key issues of CI were also analyzed from three aspects of sparse decomposition, construction of measurement matrix, and the reconstruction algorithm. The CI system can significantly cut down on the number of photosensitive devices to avoid resource waste caused by a traditional “samplethencompress” framework.