Laser & Optoelectronics Progress, Volume. 59, Issue 2, 0210009(2022)
A Defogging Method Containing Images of Sky
Fig. 1. Flow chart of proposed algorithm
Fig. 2. Atmospheric light reference pixel estimation results. (a) Original haze images; (b) results of sky recognition; (c) extraction results of He's algorithm; (d) extraction results of proposed algorithm
Fig. 3. Comparison of defogging effects under different algorithms. (a) He's algorithm; (b) proposed algorithm
Fig. 4. Transmittance optimization results. (a) Original haze image; (b) result of sky recognition; (c) transmittance based on dark channel a priori model; (d) transmittance based on bright channel model; (e) transmittance after parameter modification; (f) defogging result corresponding to the transmittance of Fig. 4(c); (g) defogging result corresponding to the transmittance of Fig. 4(d); (h) defogging result corresponding to the transmittance of Fig. 4(e)
Fig. 5. Parameter
Fig. 6. Transmittance curves of four models on Fig. 4(a)
Fig. 7. Algorithm flow for estimating transmittance
Fig. 8. Comparison of different methods of defogging effects. (a) Original images; (b) defogging effects using method in Ref.[16]; (c) defogging effects using method in Ref.[14]; (d) defogging effects using method in Ref.[13]; (e) defogging effects using method in Ref.[25]; (f) defogging effects using proposed method
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Tongying Guo, Na Li, Liangliang Sun, Haichen Wang. A Defogging Method Containing Images of Sky[J]. Laser & Optoelectronics Progress, 2022, 59(2): 0210009
Category: Image Processing
Received: Jan. 18, 2021
Accepted: Mar. 11, 2021
Published Online: Dec. 23, 2021
The Author Email: Guo Tongying (tyhchguo@126.com), Li Na (1210987670@qq.com)