基于构造简化模型和局部大气光遮罩的去雾算法

针对雾天条件下图像降质的问题,提出一种基于构造简化模型和局部大气光遮罩的单幅图像去雾算法.该方法从大气散射模型出发,通过构造雾浓度检测函数,检测出准确的大气光值选取区域,进而建立简化大气散射模型,并利用简化模型构造局部大气光遮罩.然后通过计算拉依达准则下限值的策略获取引导图,利用引导滤波进行区域平滑并保持边缘特性,再结...

Image Defogging Algorithm Based on Constructing Simplified Model and Local Atmospheric Light Mask

Aiming at the image degradation in hazy conditions,a single image defogging algorithm based on constructing simplified model and local atmospheric light mask is proposed.Based on the atmospheric scattering model,the accurate atmospheric light value selection area is detected by constructing the fog concentration detection function,and then the simplified atmospheric scattering model is established,and the local atmospheric light mask is constructed by using the simplified model.The guiding image is obtained by calculating the lower limit of Pauta criterion,and the guiding filter is used to smooth the region and maintain the edge characteristics,and then the scene albedo is obtained by combining with the simplified model.According to the Land imaging model,the restored fog free image is obtained.Through a large number of experimental tests,the restored image is smooth and the details are obvious,the Halo effects at the abrupt change of depth of field are eliminated,and it also shows the advantages in the objective evaluation.