Underwater No-Reference Image Quality Assessment for Display Module of ROV

Table 1

Evaluation protocols.

Score	Comprehensive feelings
5	The subjective feeling is excellent, foreground information is recognizable, and no color distortion is felt
4	The subjective feeling is good, the foreground information is visible and recognizable, there is a small amount of perceptual distortion, but it does not affect the extraction of important information
3	The subjective feeling is general, part of the information in the foreground is damaged, and a small amount of important information is lost due to distortion
2	The subjective perception is poor, and only the general outline of the foreground content can be distinguished; the distortion leads to the loss of some important information
1	The subjective feeling is very poor, it is difficult to recognize the foreground content, and it is almost impossible to extract any effective information from the image