Single Image Dehazing Algorithm Based on Multi-scale Image Fusion
摘要
To effectively improve the quality of the degraded image in foggy days,this paper proposes a dehazing algorithm for single image based on multi-scale image fusion.After the image is converted to gradient domain,each scale value is calculated by means of transmissivity and the gradient domain is strengthened and restructured to avoid color distortion after enhancement caused by improperly chosen scale values.The corresponding weight is calculated according to the contrast and saturation of enhanced image of each scale.After enhanced by different scale,the image is fused by means of multi-resolution fusion algorithm.Finally,the clear image is obtained.Experimental results show that this algorithm is superior to current dehazing algorithms in terms of subjective visual effect and objective evaluation index,and it is more time-efficient.