A literature survey is important for understanding and gaining much more knowledge about the specific area of a subject. The outdoor images captured in inclement weather are degraded due to the presence of haze, fog, rain and so on. Images of scenes captured in bad weather have poor contrasts and colors. This may cause difficulty in detecting the objects in the captured hazy images. Due to haze, there is trouble for many computer vision applications as it diminishes the visibility of the scene. This paper presents a study about different image dhazing methods to remove the haze from the hazy images captured in real-world weather conditions to recover a fast and improved quality of haze-free images. There is an improvement in terms of contrast visible range and color fidelity. All these techniques are widely used in many applications such as outdoor surveillance, object detection, underwater images, etc.