Fig. 1. Non-uniform illumination and multi-depth scenarios in deep-sea

Fig. 2. Overall framework of the proposed deep-sea descattering method

Fig. 3. Subjective comparisons on shallow sea and deep-sea images. From left to right are input underwater images, and the results of DCP^[14], UDCP^[16], Fusion^[13], Retinex^[9], GUM^[10], Peplography^[17], CLAHE^[8], and the proposed method

Fig. 4. Objective comparisons of deep-sea video. (a)-(d) are the video frame samples in the video and their UCIQE values; (e) is the UCIQE results of the video

Fig. 5. Objective comparisons of six deep-sea videos corresponding to Deep 1-6. (a1) to (l1) are the video frame samples in the six videos; (a2)-(l2) are the results of (a1) to (l1) of the proposed algorithm; (m)-(r) are the UCIQE results of the six videos by different methods. The red dotted line in (m) to (r) mark the corresponding frame of the above video frame samples in (a1)-(l1)

Fig. 6. Subjective and objective comparisons on deep-sea images with different scattering intensities from Haze 1 to Haze 5. From left to right are input underwater images, and the results of DCP^[14], UDCP^[16], Fusion^[13], Retinex^[9], GUM^[10], Peplography^[17], CLAHE^[8], and the proposed method