Method for Water Surface Sun Glint Suppression Based on Polarized Radiation Image Fusion

Wei Chen; Yanli Qiao; Xiaobing Sun; Yulong Yin

doi:10.3788/AOS201939.0529001

Acta Optica Sinica, Volume. 39, Issue 5, 0529001(2019)

Method for Water Surface Sun Glint Suppression Based on Polarized Radiation Image Fusion

Wei Chen^1,2,3,4、*, Yanli Qiao^1,4, Xiaobing Sun^1,4、*, and Yulong Yin^1,2,4

Author Affiliations

¹ Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, Anhui 230031, China

² University of Science and Technology of China, Hefei, Anhui 230026, China

³ State National University of Defense Technology, Hefei, Anhui 230037, China

⁴ Key Laboratory of Optical Calibration and Characterization, Chinese Academy of Sciences, Hefei, Anhui 230031, China

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Figures & Tables(10)

Fig. 1. Measurement method of Stokes parameters

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Fig. 2. Three-path simultaneous polarization imager. (a) Structural diagram; (b) physical map

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Fig. 3. Gray images. (a) Image I; (b) image I0; (c) image I45; (d) image I90; (e) image I⊥; (f) image F

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Fig. 4. Gray distribution analysis results. (a)(b) Image I; (c)(d) image I0; (e)(f) image I45; (g)(h) image I90; (i)(j) image F

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Fig. 5. ROI selection of target and glint background. (a) Glint background; (b) target

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Fig. 6. Schematic of polarized reflection of ideal water surface

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Fig. 7. Image of polarization degree

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Table 1. Main specifications of three-path simultaneous polarization imager
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Table 1. Main specifications of three-path simultaneous polarization imager
Specification Value
Spectral response range /nm 380-1000
Focus /mm 50
Resolution /(pixel×pixel) 1024×768
Pixel size /μm 6.8
Field of view 7°
Polarization orientation 0°,45°,90°

Table 2. Statistics of saturated pixels
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Table 2. Statistics of saturated pixels
Specification I I₀ I₄₅ I₉₀ F
Number 213996 181582 131669 57539 0
Percentage /% 27.21 23.09 16.74 7.32 0

Table 3. Image quality evaluation index
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Table 3. Image quality evaluation index
Image Mean gray Standard deviation Contrast
I 115.9793 97.9035 0.0196
I₀ 95.1878 98.0528 0.0319
I₄₅ 79.1919 92.0872 0.0705
I₉₀ 32.1149 74.9249 0.3334
F 67.2195 30.7603 0.2621

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Wei Chen, Yanli Qiao, Xiaobing Sun, Yulong Yin. Method for Water Surface Sun Glint Suppression Based on Polarized Radiation Image Fusion[J]. Acta Optica Sinica, 2019, 39(5): 0529001

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