Small Target Detection of Infrared Linear Array Image Based on Complemented Gradient Enhancement

Chenfeng Lou; Yong Zhang; Ya Liu

doi:10.3788/AOS202141.2104001

Acta Optica Sinica, Volume. 41, Issue 21, 2104001(2021)

Small Target Detection of Infrared Linear Array Image Based on Complemented Gradient Enhancement

Chenfeng Lou^1,2,3, Yong Zhang^1,2、*, and Ya Liu^1,2,3

Author Affiliations

¹Key Laboratory of Infrared Detection and Imaging Technology, Chinese Academy of Sciences, Shanghai 200083, China

²Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China

³University of Chinese Academy of Sciences, Beijing 100049, China

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Figures & Tables(12)

Fig. 1. Belt noise in image shot by linear sensor array

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Fig. 2. Re-integrated images. (a) Unidirectional gradient image of Fig. 1; (b) re-integrated image of Fig. 1; (c) infrared image with cloud; (d) re-integrated image of Fig. 2(c)

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Fig. 3. Typical infrared small target. (a) Original image; (b) unidirectional gradient image

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Fig. 4. Diagram about enhancing unidirectional gradient image via complemented pixel

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Fig. 5. Enhanced results of infrared small target in Fig. 3. (a) Original image; (b) unidirectional gradient image; (c) EGI; (d)ERI; (e) EGI (without L); (f) ERI (without L)

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Fig. 6. Diagram of generating stacked ERI

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Fig. 7. Aggregate of pixels in background

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Fig. 8. Comparison of several algorithms in multiplesequences. (a1)(b1)(c1)(d1)(e1) Sequence a/b/c/d/e; (a2)(b2)(c2)(d2)(e2) proposed method; (a3)(b3)(c3)(d3)(e3) MRF; (a4)(b4)(c4)(d4)(e4) MDTDLMS-RDLCM; (a5)(b5)(c5)(d5)(e5) NIPPS; (a6)(b6)(c6)(d6)(e6) MPCM

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Fig. 9. ROC curves of different algorithms. (a) Sequence d; (b) sequence e

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Table 1. Detection rates of several target detection methods
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Table 1. Detection rates of several target detection methods
Sequence Proposed method MRF MDTDLMS- RDLCM NIPPS MPCM
a 0.80 0.00 0.00 0.80 0.20
b 1.00 0.20 0.00 1.00 0.40
c 1.00 0.20 0.00 0.80 0.40
d 1.00 0.90 1.00 1.00 0.80
e 0.96 0.79 0.95 0.91 0.92

Table 2. False alarm rates of several target detection methods
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Table 2. False alarm rates of several target detection methods
Sequence Proposed method MRF MDTDLMS- RDLCM NIPPS MPCM
a 0.00 13.5 >100 0.16 0.16
b 0.94 >100 >100 0.60 1.73
c 0.11 >100 >100 5.61 6.89
d 3.51 3.40 62.00 5.27 22.00
e 4.70 16.70 37.7 9.96 6.33

Table 3. Running time of a image with 256 pixel×256 pixel under several target detection methods
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Table 3. Running time of a image with 256 pixel×256 pixel under several target detection methods
Method Proposed method MRF MDTDLMS- RDLCM NIPPS MPCM
Time 0.86 0.39 2.61 6.10 0.09

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Chenfeng Lou, Yong Zhang, Ya Liu. Small Target Detection of Infrared Linear Array Image Based on Complemented Gradient Enhancement[J]. Acta Optica Sinica, 2021, 41(21): 2104001

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