Underwater image enhancement plays a critical role in marine industry. Various algorithms are applied to enhance underwater images, but their performance terms of perceptual quality has been little studied. In this paper, we investigate five popular and output quality. To end, have created benchmark, including images enhanced by different ground truth obtained human perception experiments. We s...

objective and subjective ways of understanding information corresponds to the conflict between an understanding of information as a thing or a substance versus an understanding of it as a sign. It is a fundamental distinction that involves a whole theory of knowledge, and it has roots back to different metaphors applied in Shannon's information theory. It is argued that a subject-dependent/ sit...