ENHANCING UNDERWATER IMAGES BY LEVERAGING TRANSMISSION MAP,WHITE BALANCE AND MULTI-SCALE FUSION

Abstract

Due to the medium’s scattering and absorption, underwater image captures are prone to colour distortion, detail loss, and contrast reduction. The arti cle provides a technique for enhancing underwater photography quality that doesn’t require any special software,more than the native single image.The three techniques are used here for enhancing underwater image include Trans mission map, an enhanced white-balancing method,and multiscale image fu sion method .A guidance filter is adapted to refine the estimated transmis sion map depth.The suggested technique increases the underwater object’s visibility and restores quality image. The white balancing method is to re move the color distoration from underwater image,it uses 5 channel com pensated approaches,these 5 channels are white balanced using gray world algorithm.In white-balancing method, the Underwater Colour Image Quality Evaluation (UCIQE) and the Underwater Image Quality Measure (UIQM) are added together to determine the best color-compensated method. The gamma-correction process is used to create numerous underexposure versions from a single underwater images. Then, in the well-known multi-scale fus ing approach , suggest blending ”chrominance”,”luminance”,and ”saliency” as three weights. The visual quality of an image is predominantly influenced by these weights, aiming to generate a fusion result with improved visual appeal.Through validation with a wide range of qualitative and quantitative evaluations ,has been able to demonstrate that images enhanced by our strat egy have superior visual quality than other cutting-edge underwater dehazing procedures.