Acta Photonica Sinica, Volume. 50, Issue 9, 0910003(2021)
Sand-dust Image Enhancement Based on Multi-exposure Image Fusion
Figures & Tables(17)
Fig. 2. The histogram of sand-dust image before and after blue channel compensation and the histogram of corresponding image standardization
Fig. 3. The enhancement results of the proposed algorithm to the sand-dust image （Fig. 2（a）） at different values of
Fig. 4. The enhancement results of the proposed algorithm to the sand image at different values of
Fig. 5. The enhancement results of the proposed algorithm to the sand image at different values of
Fig. 6. Exposure images generated by the proposed algorithm and fusion result
Table 1. Comparison of average gradient
View tableView in ArticleTable 1. Comparison of average gradient
Orig. Ref.［ 4 ］Ref.［ 13 ］Ref.［ 1 ］Ref.［ 3 ］Ref.［ 10 ］Ref.［ 8 ］Ours Fig.7 4.126 8 4.004 9 6.110 6 7.793 2 6.005 6 5.935 0 8.353 4 9.176 2 Fig.8 1.504 3 2.879 1 2.687 4 4.006 2 2.488 0 2.685 2 4.791 9 5.605 6 Fig.9 1.652 7 2.413 9 3.300 5 4.580 0 4.472 6 3.309 9 4.780 5 6.366 8 Fig.10 2.560 9 2.401 4 5.571 7 5.051 7 4.512 9 4.187 2 4.613 9 6.063 3 Fig.11 4.392 0 4.195 8 6.931 0 8.029 2 7.255 8 5.664 5 7.776 6 9.558 9 Fig.12 2.074 7 2.548 9 3.045 1 4.531 6 3.882 2 4.939 2 4.594 8 6.331 2 Average 2.718 6 3.074 0 4.607 7 5.665 3 4.769 5 4.453 5 5.818 5 7.183 7
Table 2. Comparison of spatial frequency
View tableView in ArticleTable 2. Comparison of spatial frequency
Orig. Ref.［ 4 ］Ref.［ 13 ］Ref.［ 1 ］Ref.［ 3 ］Ref.［ 10 ］Ref.［ 8 ］Ours Fig.7 15.325 6 14.512 5 20.658 3 27.810 1 23.087 0 22.870 5 30.658 9 31.381 8 Fig.8 4.121 6 7.669 4 6.565 0 10.166 0 6.656 5 7.265 4 12.748 5 14.211 0 Fig.9 5.577 3 7.222 0 11.130 9 14.865 7 15.739 7 10.886 7 15.419 2 20.810 1 Fig.10 9.569 8 8.255 5 20.079 1 19.013 7 17.827 4 16.394 1 16.946 3 22.551 8 Fig.11 13.744 7 13.753 9 21.023 9 24.644 9 23.756 1 19.155 7 25.715 6 28.868 5 Fig.12 6.647 0 7.792 6 8.604 5 13.608 0 12.583 0 15.798 9 13.866 3 18.065 0 Average 9.164 3 9.867 6 14.676 9 18.351 4 16.608 3 15.395 2 19.225 8 22.648 0
Table 3. Comparison of contrast
View tableView in ArticleTable 3. Comparison of contrast
Orig. Ref.［ 4 ］Ref.［ 13 ］Ref.［ 1 ］Ref.［ 3 ］Ref.［ 10 ］Ref.［ 8 ］Ours Fig.7 117.616 8 105.468 3 213.710 6 387.295 3 266.914 8 261.930 7 470.707 5 493.164 5 Fig.8 8.499 9 29.431 1 21.565 6 51.711 8 22.170 7 26.412 5 81.321 3 101.049 5 Fig.9 15.574 9 26.114 9 62.034 7 110.647 7 124.041 6 59.342 7 119.041 6 216.830 7 Fig.10 45.886 6 34.147 8 202.006 4 181.138 3 159.239 0 134.663 4 143.888 9 254.821 7 Fig.11 94.700 1 94.826 5 221.568 3 304.463 8 282.898 9 183.940 3 331.492 5 417.762 1 Fig.12 22.133 4 30.420 5 37.090 0 92.765 9 79.317 5 125.041 3 96.321 2 163.483 9 Average 50.735 3 53.401 5 126.329 3 188.003 8 155.763 8 131.888 5 207.128 8 274.518 7
Table 4. Time complexity of the proposed algorithm
View tableView in ArticleTable 4. Time complexity of the proposed algorithm
Process Complexity Process Complexity Blue channel compensation Construction of Gaussian pyramid Image standardization Construction of Laplacian pyramid Generation of exposure images Image pyramid fusion and reconstruction Calculation of weight maps Proposed method
Table 5. Comparison of running time （s）
View tableView in ArticleTable 5. Comparison of running time （s）
Resolution Ref.［ 4 ］Ref.［ 13 ］Ref.［ 1 ］Ref.［ 3 ］Ref.［ 10 ］Ref.［ 8 ］Ours Fig.7 893×513 5.40 3.02 2.51 1.45 4.93 4.29 2.40 Fig.8 1 600×1 200 22.12 10.84 8.63 6.70 18.99 23.53 12.41 Fig.9 900×600 6.29 3.63 2.74 1.62 5.03 4.31 2.97 Fig.10 600×400 2.91 1.91 1.39 0.98 2.68 2.26 1.33 Fig.11 490×326 2.04 1.43 1.09 0.85 1.88 1.99 1.22 Fig.12 640×442 3.45 1.99 1.66 1.06 2.94 2.57 1.95 Total - 42.21 22.82 18.02 12.66 36.45 38.95 22.28
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Hao CHEN, Huicheng LAI, Guxue GAO, Hao WU, Xuze QIAN. Sand-dust Image Enhancement Based on Multi-exposure Image Fusion[J]. Acta Photonica Sinica, 2021, 50(9): 0910003
Paper Information
Category: Image Processing
Received: Mar. 5, 2021
Accepted: Apr. 19, 2021
Published Online: Oct. 22, 2021
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