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Chin. Phys. B, 2020, Vol. 29(2): 024204    DOI: 10.1088/1674-1056/ab671a
ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS Prev   Next  

Compressed ghost imaging based on differential speckle patterns

Le Wang(王乐)1, Shengmei Zhao(赵生妹)1,2
1 Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications(NUPT), Nanjing 210003, China;
2 Key Laboratory of Broadband Wireless Communication and Sensor Network Technology(NUPT), Ministry of Education, Nanjing 210003, China
Abstract  We propose a compressed ghost imaging scheme based on differential speckle patterns, named CGI-DSP. In the scheme, a series of bucket detector signals are acquired when a series of random speckle patterns are employed to illuminate an unknown object. Then the differential speckle patterns (differential bucket detector signals) are obtained by taking the difference between present random speckle patterns (present bucket detector signals) and previous random speckle patterns (previous bucket detector signals). Finally, the image of object can be obtained directly by performing the compressed sensing algorithm on the differential speckle patterns and differential bucket detector signals. The experimental and simulated results reveal that CGI-DSP can improve the imaging quality and reduce the number of measurements comparing with the traditional compressed ghost imaging schemes because our scheme can remove the environmental illuminations efficiently.
Keywords:  ghost imaging      compressed sensing      differential speckle patterns      differential bucket detector signals  
Received:  21 October 2019      Revised:  17 November 2019      Accepted manuscript online: 
PACS:  42.30.Va (Image forming and processing)  
  42.30.Wb (Image reconstruction; tomography)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11847062 and 61871234), the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20180755), and the Science Fund from NUPT (Grant No. NY218098).
Corresponding Authors:  Shengmei Zhao     E-mail:  zhaosm@njupt.edu.cn

Cite this article: 

Le Wang(王乐), Shengmei Zhao(赵生妹) Compressed ghost imaging based on differential speckle patterns 2020 Chin. Phys. B 29 024204

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