关键词: 图像去雾, 引导图像滤波器, 大气面纱修正

Abstract: The single image dehazing method based on median filtering neither effectively preserves edges of haze image nor truly reflects the depth of the scene information. So this paper proposes a method of atmospheric veil correction based on guided image filtering. It gets the initial atmospheric veil through median filtering. It is refined by guided image filter to obtain more accurate atmospheric veil. It removes redundant texture information and brings the depth edge information. The scene radiation is obtained by the atmosphere attenuation model, adjusting the brightness of the restored image. Compared with other existing typical dehazing methods, the method has a better dehazing effect at distant object where depth changes abruptly, and the time complexity of the methods is linear.

Key words: image dehazing, guided image filtering, atmospheric veil correction