Fig. 1. Structure diagram of LFS underwater imaging system

Fig. 2. Geometric model of underwater imaging

Fig. 3. Schematic diagram of light source

Fig. 4. Line structure laser forming system

Fig. 5. Line laser motion process

Fig. 6. Sampling area image

Fig. 7. Diagram of experimental equipment

Fig. 8. Layout of turbidity experiment. (a) sCMOS camera movement; (b) light source movement; (c) turbidity experiment layout

Fig. 9. Diagram of underwater imaging device

Fig. 10. Experimental environment for underwater imaging

Fig. 11. Comparison of images at different turbidity

Fig. 12. LED versus LFS imaging contrast results

Fig. 13. LED versus LFS imaging contrast signal-to-noise ratio results

Fig. 14. Comparison of images at different optical distances

Fig. 15. Contrast results of LED versus LFS underwater visual range experiments

Fig. 16. Contrast signal-to-noise ratio results of LED versus LFS underwater optical distances experiments