Abstract: Getting clear images and videos in underwater environments is an important issue in ocean engineering. Restoration and enhancement of underwater images and videos are difficult tasks because of variations of physical properties. The scattering and absorption are the main causes in the underwater environment to make the images and videos decrease their visibility, for example, blurry, colour distortion, low contrast, and reducing visual range. In this work, we proposed a method to estimate underwater scene depth and enhance it using CLAHE (contrast-limited adaptive histogram equalization) to restore real and synthesized underwater images and video and will show better performance.

Keywords: Underwater image, light scattering, light absorption, image enhancement, image restoration.