Aiming at problem that dark channel prior algorithm is computational complex and quite time consuming,can 't meet the demand of real-time in traffic surveillance system,and atmospheric light is easily affected by the white object,the limitation of distortion happens in the sky area and also the Halo phenomenon in the scene boundaries,a new defogging algorithm is proposed based on guided filtering,which firstly uses quad-tree search algorithm to accurately estimate atmospheric light and then uses the differe...
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