Fig. 1. Flow chart of the proposed algorithm

Fig. 2. Flow chart of homogenization of backscattered light

Fig. 3. Underwater polarization imaging experiment. (a) Experimental setup; (b) real experimental scene

Fig. 4. Comparison of images before and after backscattered light optimization. (a)(d) Original image and its 3D grayscale image; (b)(e) unoptimized backscattered light processing result and its 3D grayscale image; (c)(f) backscattered light homogenization correction result and its 3D grayscale image

Fig. 5. Influence of different fusion parameters on the results. (a) $\omega =\mathrm{0.8}$; (b) $\omega =\mathrm{0.5}$; (c) $\omega =\mathrm{0.2}$; (d) $\omega =\mathrm{0.1}$

Fig. 6. Comparison of descattering results with different concentrations

Fig. 7. Comparison of details of descattering results with different concentrations

Fig. 8. Comparison of effects before and after descattering. (a) Intensity image; (b) 3D grayscale image of target region of intensity image; (c) processed image; (d) 3D grayscale image of target region of processed image