New approach for underwater image denoise combining inhomogeneous illumination and dark channel prior

The clarity of underwater image is significant for underwater research. But due to the absorptive and scattering nature of seawater, underwater images are essentially characterized by their poor visibility. How to get a clear image is hot issue. And there are two problems in underwater clear vision area: getting clear original image and image processing. In this paper we developed a new approach technology to solve these problems. In the first place we developed an inhomogeneous illumination method to get the clear original image, then the dark channel prior method was used to process the original image. The processed image is with high resolution and definition.