An algorithm for remote sensing image enhancement in space domain and transform domain based on the contourlet transform is proposed. Firstly
linear addition of original image and its details obtained by the Laplacian Pyramid transform is used for enhancing image in space domain. Then
the coefficients in different scales and different directions are obtained by the contourlet transform and a nonlinear function is introduced to modify the coefficients for enhancing image in transform domain. Finally
the image enhancement is implemented by reconstructing these coefficients. The experimental results show that this algorithm can get better effect for remote sensing image enhancement by comparing with other algorithms.