Underwater Image Quality Enhancement using new proposed Image HSI stretching and Median Filter (HSMF) method

Underwater environment generally cause color cast or color scatter while photography. Color scatter is due to haze effects appearing when light reflected from an object is absorbed or scattered several times by particles present in water. This paper presents a novel procedure which is a special integration for various available techniques; also it has new approach for image stretching and image equalisation. Proposed procedure enhances shallow ocean optical images or videos using stretching cum equalizing cum median filter and also as per wavelength properties. Our key contributions are proposed including a novel shallow water imaging model that compensates in order to attenuate discrepancy along propagation path and an effective underwater scene enhancement scheme. Recovered images are characterized by a reduced noise level, better exposure for dark regions, and global contrast where finest details and edges are enhanced significantly.