Digital Image Defogging Using Dark Channel Prior and Histogram Stretching Method

Abstract: In recent world scenario digital image processing is the most widely used application. Digital image processing is the method to perform some operations on the image, in order to get an enhanced image and extract some useful information from that image. Mostly in winter season the visibility of outdoor images captured in bad weather is often degraded due to the presence of fog. Because of this problem clear images are not obtained. In this paper, the proposed method uses the dark channel prior and histogram stretching methods for removing a fog from the images and obtaining a more clear images. Whereas dark channel prior is used to improve the quality of foggy images by removing a fog and histogram stretching method is used to improve the contrast of the image.

Keywords: Image processing, defogging, dark channel prior, histogram stretching etc.