Aiming at problem of unclear edge contour and high computing redundancy exists in image fusion
put forward image fusion algorithm combined with nonlinear approximation contourlet transform and regional feature.By nonlinear estimation keeps the most significant coefficients frequency band of Contourlet high-frequency sparse matrix. Fuse image by using different regional feature strategies to low-frequency region and high-frequency region.Experimental results show that this image fusion algorithm can not only improve visual effect and image quality
but also can remove the noise and enhance the image.