Laser & Optoelectronics Progress, Volume. 58, Issue 20, 2010011(2021)
Research of Dehazing Algorithm Based on Dark Channel Prior
Figures & Tables(7)
![Transmittance diagrams obtained by different algorithms. (a) Foggy graph; (b) algorithm in Ref. [5]; (c) our algorithm](/Images/icon/loading.gif){kind=icon}
Fig. 3. Transmittance diagrams obtained by different algorithms. (a) Foggy graph; (b) algorithm in Ref. [5]; (c) our algorithm
Fig. 5. Dehazing results of different algorithms. (a) Foggy graph; (b) Ref. [5]; (c) Ref. [6]; (d) Ref. [7]; (e) Ref. [9]; (f) our algorithm
Table 1. PSNR and SSIM of images restored by different algorithms
View tableTable 1. PSNR and SSIM of images restored by different algorithms
Image Ref.[5] Ref.[6] Ref.[7] Ref.[9] Ours PSNR /dB SSIM PSNR /dB SSIM PSNR /dB SSIM PSNR /dB SSIM PSNR /dB SSIM Fig.5 (a1)10.223 0.597 12.292 0.768 16.561 0.851 14.793 0.785 16.847 0.865 Fig.5 (a2)14.622 0.759 17.425 0.846 21.379 0.924 18.614 0.776 21.601 0.938 Fig.5 (a3)14.803 0.771 18.807 0.855 21.139 0.911 16.490 0.722 21.437 0.935 Fig.5 (a4)15.025 0.776 18.594 0.895 20.769 0.825 15.886 0.835 21.147 0.885 Fig.5 (a5)16.137 0.804 17.704 0.845 20.901 0.932 16.643 0.761 21.329 0.958 Fig.5 (a6)16.215 0.833 16.910 0.620 20.419 0.771 16.458 0.736 21.527 0.862 Average 14.504 0.756 16.955 0.804 20.194 0.869 16.480 0.769 20.648 0.907
Table 2. Average gradient and time of different algorithms
View tableTable 2. Average gradient and time of different algorithms
Image Ref.[5] Ref.[6] Ref.[7] Ref.[9] Ours AG Time /s AG Time /s AG Time /s AG Time /s AG Time /s Fig.5 (a1)0.020 8.261 0.015 3.489 0.017 1.667 0.024 3.599 0.022 3.151 Fig.5 (a2)0.031 7.983 0.030 3.319 0.029 1.391 0.042 3.067 0.043 3.144 Fig.5 (a3)0.030 8.963 0.031 3.445 0.030 1.603 0.045 3.453 0.038 2.512 Fig.5 (a4)0.051 8.245 0.044 3.399 0.047 1.571 0.057 3.346 0.055 3.142 Fig.5 (a5)0.028 9.182 0.026 3.485 0.028 1.652 0.037 3.376 0.028 3.175 Fig.5 (a6)0.022 7.993 0.024 3.001 0.024 1.419 0.043 3.493 0.026 3.146 Average 0.030 8.437 0.028 3.356 0.029 1.550 0.041 3.389 0.047 3.045
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Hengfei Pu, Zhen Li, Liangrong Li. Research of Dehazing Algorithm Based on Dark Channel Prior[J]. Laser & Optoelectronics Progress, 2021, 58(20): 2010011
Paper Information
Category: Image Processing
Received: Nov. 25, 2020
Accepted: Jan. 6, 2021
Published Online: Oct. 13, 2021
The Author Email: Li Liangrong (lrli@gzu.edu.cn)
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