Chinese Journal of Lasers, Volume. 46, Issue 3, 0309002(2019)
Fog Image Enhancement Algorithm Based on Boundary-Limited Weighte Least Squares Filtering
Figures & Tables(6)
![Comparison of transmission images. (a) Original image; (b) dark channel image in Ref.[8]; (c) transmission image in Ref.[8]; (d) dehazing image in Ref.[8]; (e) boundary constraint image in Ref.[14]; (f) transmission image in Ref.[14]; (g) dehazing image in Ref.[14]; (h) boundary constraint image by proposed algorithm; (i) optimized transmission image by proposed algorithm; (j) dehazing image by proposed algorithm](/Images/icon/loading.gif){kind=icon}
Fig. 3. Comparison of transmission images. (a) Original image; (b) dark channel image in Ref.[8]; (c) transmission image in Ref.[8]; (d) dehazing image in Ref.[8]; (e) boundary constraint image in Ref.[14]; (f) transmission image in Ref.[14]; (g) dehazing image in Ref.[14]; (h) boundary constraint image by proposed algorithm; (i) optimized transmission image by proposed algorithm; (j) dehazing image by proposed algorithm
Fig. 4. Qualitative comparison of results of different dehazing methods. (a) Original image; (b) Ref.[8]; (c) Ref.[14]; (d) Ref.[16]; (e) Ref.[17]; (f) Ref.[18]; (g) proposed algorithm
Fig. 5. Qualitative comparison of sky region and detail features of different dehazing methods. (a) Original image; (b) Ref.[8]; (c) Ref.[14]; (d) Ref.[16]; (e) Ref.[17]; (f) Ref.[18]; (g) proposed algorithm
Table 1. Image quality evaluation
View tableTable 1. Image quality evaluation
Fig. 4 Method e Ψ e+ Ref.[8] 0.12 0 1.47 1.59 Ref.[14] 0.21 0.15 2.62 2.83 Building Ref.[16] 0.05 0 0.94 0.99 Ref.[17] 0.04 0 1.11 1.15 Ref.[18] 0.13 0 1.74 1.87 Proposed 0.11 0 1.72 1.83 Ref.[8] 0.02 0 0.92 0.94 Ref.[14] 0.05 0 1.66 1.71 Mountain Ref.[16] 0.01 0 0.89 0.9 Ref.[17] 0.02 0.23 1.29 1.31 Ref.[18] 0.02 0.09 1.23 1.25 Proposed 0.03 0 1.5 1.53 Ref.[8] 0.02 0 0.95 0.97 Ref.[14] 0.11 0.31 2.62 2.73 Monitoring station Ref.[16] 0.04 0 1.1 1.14 Ref.[17] 0.03 0 1.33 1.36 Ref.[18] 0.07 0 1.93 2.00 Proposed 0.03 0 1.57 1.6 Ref.[8] 0.01 0.05 1.2 1.21 Ref.[14] 0.01 0.05 1.59 1.6 Market Ref.[16] 0.01 0.95 1.07 1.08 Ref.[17] 0.01 0.97 1.53 1.54 Ref.[18] 0 0.13 1.64 1.64 Proposed 0.02 0.16 1.97 1.99
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Hongyun Li, Lijun Yun, Yin Gao. Fog Image Enhancement Algorithm Based on Boundary-Limited Weighte Least Squares Filtering[J]. Chinese Journal of Lasers, 2019, 46(3): 0309002
Paper Information
Category: holography and information processing
Received: Sep. 27, 2018
Accepted: Dec. 12, 2018
Published Online: May. 9, 2019
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