A Review on Deweathering Methods: Fog & Haze Removal

Abstract

Image has important applications in many fields such as video surveillance, marine surveillance, traffic
monitoring, border security, target identification and so on. In poor weather condition, fog removal from an
image is an unavoidable problem. This paper presents a review on the different existing fog & haze removal
techniques. Haze & fog brings trouble to many applications as it blemishes the visibility of the outdoor images. It
is formed due to the two fundamental phenomena that are direct attenuation and the air light. Attenuation
reduces the contrast of the image and air light increases the whiteness in the image. Haze & fog removal
techniques reduces the whiteness, recover the color and contrast of the image. These methods are widely used in
many applications such as outdoor surveillance, object identification, consumer electronics, traffic monitoring,
border controls, marine surveillance, video security etc. The overall objective of this paper is to explore the
various defogging methods for efficiently removing the haze & fog from digital images.