A novel underwater image enhancement using bpdhe technique with luminance contrast stretch

Image enhancement is the process of improving the quality of the input image. Underwater images mainly suffer from the problem of poor color contrast and poor visibility. These problems occurred due to the scattering of light and refraction of light while entering from rarer to denser medium. Scattering causes the blurring of light and reduces the color contrast. So many authors proposed different methods on under water images. In the process of enhancement brightness will alter, it is required to preserved. Here proposed a enhancement method for underwater using BPDHE with contrast stretch. Experiments are carried out on different images to evaluate performance of the proposed method, in terms of quality metrics like Mean Square Error (MSE), peak signal-to-noise ratio (PSNR), Absolute Mean Brightness Error (AMBE), Contrast Improvement Index (CI) and image visual quality.