Analysis of Various Contrast Improvement Techniques for Dehazing an Image

DurgaLakshmi R, Saravanan P


Haze removal also known as contrast improvement mention unique procedures that focus to minimize or eliminate the degradation that have arises while the digital image was captured. The degradation may be owing to different factors like respective target-camera motion, blur because of camera miss-focus, respective atmospheric instability and others. This paper has concentrated on the variety of contrast improvement techniques. Since haze depends on the information of scene depth which is unknown factor so dehazing is difficult task. Efficacy of fog is the function of distance between the camera and target. Thus, air light map estimation is needed to haze removal. The present dehazing techniques can be classified as: image enhancement and image restoration although, the image enhancement does not consolidate the cause of fog degrade the class of image.

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