Underwater Image Enhancement Approaches: A Current Perspective

Abstract

The submerged pictures are gaining significance as the exploration of the world covered up in the profundity of the sea has to be known. There is extensive research work going on in this area and for that, pictures are significant because of the different components. It is somewhat hard to get accurate and specific pictures due to the submerged environment and the obstacles undersea. This poses a lot of challenges in the investigations of submerged life and finding distinguished proof of marine creatures. There are loads of cameras used to capture the images of the ocean bottom, but they are fitted within the robots which can go submerged or the sensors that can work submerged. As there are numerous issues with the cameras and sensor due to the submerged environment, so it should be taken care of. Since light changes its property as per the profundity of the submerged world and the biotic action on the ocean bottom, the captured pictures are commonly influenced by the dimness and grains because of dispersing. Besides, many more things make a commotion in the picture. Over the years, various procedures are presented and tested which can either capture better pictures or process post-captured ones for improvements. In this paper, we review various procedures which can do target improvement sought for some specific purpose. It comprises shading recreation and checking the improvement of pictures through various measures. The review work presents a comparative outcome of recent works in the area of underwater image enhancements and future scopes in this field.