Compensative Quick Defogging Algorithm Based on Dark Channel Prior
Yang Ya · Jisuanji gongcheng · 2015
Aiming at the problem of weak ability and slow processing speed in dehazing program based on dark channel prior algorithm,this paper proposes a fast defogging algorithm of compensation for dark channel image.It combines median filtering algorithm to compensate the area dark channel image with weak defogging ability.The global minimum image is regarded as guided image and the dark channel image is filtered utilizing the guided filter characteristics of edgepreserving smoothing,which can remove the phenomenon of blackspot and cut down the algorithm complexity.Clear images can be restored based on the atmosphere scattering model after regarding the maximum of new dark channel image as evaluating the atmosphere light intensity simply.Experimental results show that compared with the median filtering algorithm,fast defogging algorithm,etc,the obtained defogging images of this algorithm have better sharpness and color degrees.The computational speed is greatly improved.