• Chinese Optics Letters
  • Vol. 17, Issue 7, 071101 (2019)
Hui Guo1、2, Ruyong He1, Chaopeng Wei1, Zequn Lin1, Le Wang1, and Shengmei Zhao1、*
Author Affiliations
  • 1Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • 2College of Information Engineering, Fuyang Normal University, Fuyang 236037, China
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    DOI: 10.3788/COL201917.071101 Cite this Article Set citation alerts
    Hui Guo, Ruyong He, Chaopeng Wei, Zequn Lin, Le Wang, Shengmei Zhao. Compressed ghost edge imaging[J]. Chinese Optics Letters, 2019, 17(7): 071101 Copy Citation Text show less

    Abstract

    In this Letter, we propose an advanced framework of ghost edge imaging, named compressed ghost edge imaging (CGEI). In the scheme, a set of structured speckle patterns with pixel shifting illuminate on an unknown object. The output is collected by a bucket detector without any spatial resolution. By using a compressed sensing algorithm, we obtain horizontal and vertical edge information of the unknown object with the bucket detector detection results and the known structured speckle patterns. The edge is finally constructed via two-dimensional edge information. The experimental and numerical simulations results show that the proposed scheme has a higher quality and reduces the number of measurements, in comparison with the existing edge detection schemes based on ghost imaging.
    yk=xiyjSk(xi,yj)T(xi,yj),(1)

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    T(xi,yj)=Sk(xi,yj)·ykSk(xi,yj)yk,(2)

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    Sk(xi,yj)=Sk1(xi1,yj1)=Sk2(xi1,yj)=Sk3(xi1,yj+1)=Sk4(xi,yj1)=Sk5(xi,yj+1)=Sk6(xi+1,yj1)=Sk7(xi+1,yj)=Sk8(xi+1,yj+1),(3)

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    ykh=xiyjSk1(xi,yj)T(xi,yj)+2×xiyjSk2(xi,yj)T(xi,yj)+xiyjSk3(xi,yj)T(xi,yj)xiyjSk6(xi,yj)T(xi,yj)2×xiyjSk7(xi,yj)T(xi,yj)xiyjSk8(xi,yj)T(xi,yj)=xiyjSk(xi,yj)[T(xi1,yj1)+2×T(xi1,yj)+T(xi1,yj+1)T(xi+1,yj1)2×T(xi+1,yj)T(xi+1,yj+1)]=xiyjSk(xi,yj)hST(xi,yj),(4)

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    hST(xi,yj)=Sk(xi,yj)·ykhSk(xi,yj)ykh;(5)

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    vST(xi,yj)=Sk(xi,yj)·ykvSk(xi,yj)ykv,(6)

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    Tedge=[hST(xi,yj)]2+[vST(xi,yj)]2.(7)

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    ϕk=[Sk(x1,y1)Sk(x1,yn)Sk(x2,y1)Sk(x2,yn)Sk(xm,y1)Sk(xm,yn)];(8)

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    A=[ϕ1ϕ2ϕM]=[S1(x1,y1)S1(x1,y2)S1(xm,yn)S2(x1,y1)S2(x1,y2)S2(xm,yn)SM(x1,y1)SM(x1,y2)SM(xm,yn)].(9)

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    ykh=yk1+2×yk2+yk3yk62×yk7yk8,(10)

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    minfDfXh1+μ2YhAXh22,(11)

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    SNR=mean(Tedge)mean(Tback)[var(Tback)]0.5,(12)

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    Compressionratio=Mm×n=Mm×n×L,(13)

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    SNRBD=10log10PowerSPowerN,(14)

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    Hui Guo, Ruyong He, Chaopeng Wei, Zequn Lin, Le Wang, Shengmei Zhao. Compressed ghost edge imaging[J]. Chinese Optics Letters, 2019, 17(7): 071101
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