Zhenyu HU, Qi CHEN, Daqi ZHU. Underwater image enhancement based on color balance and multi-scale fusion[J]. Optics and Precision Engineering, 2022, 30(17): 2133
- Optics and Precision Engineering
- Vol. 30, Issue 17, 2133 (2022)
Fig. 1. Flow chart of underwater image enhancement algorithm based on color balance and multiscale fusion
Fig. 2. Schematic diagram of light absorption by water
Fig. 3. Original and color balanced images
Fig. 4. Principle of CLAHE algorithm
Fig. 5. Original image and histograms of its color channels
Fig. 6. CLAHE processed image and histograms of its color channels
Fig. 7. Weight maps of two images
Fig. 8. Image fusion process
Fig. 9. Color restoration effects
Fig. 10. Original images and images processed by different algorithms
Fig. 11. Results of ablation experiment
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Table 1. Running time of different algorithms
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Table 2. Entropy values of images
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Table 3. UIQM values of images
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Table 4. UCIQE values of images
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Table 5. Objective evaluation indexes of ablation experiment
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