A Survey Paper On Single Image Dehazing

Images taken in foggy weather condition often suffer from poor visibility and clarity. Images of the outdoor scene which are captured under bad weather conditions contain atmospheric degradation such as haze, fog, smoke caused by the particles present in the atmosphere resulting in the absorption and scattering of the light, which travels from the scene point of the observer. Due to the presence of the various atmospheric particles (like fog, mist, smoke, water-droplets etc.) there is a resultant decay in the color and contrast of the images captured under the bad weather conditions. Such images also exhibit some losses in their quality which are dependent on the distance. Sometimes it may also causes difficulty in detecting the objects in the hazy images or scene. So, if the depth and the atmospheric condition are known, we can enhance the images by compensating the effect of the fog. This paper describes the various haze removal techniques to remove the haze from the captured hazy images and to recover a better and improved quality haze free images. KeywordsImage Dehazing; Haze Formation Model; Fattal Method; Polarization Filtering; Dark channel prior; Fusion Dehazing. __________________________________________________*****_________________________________________________