Panchromatic and multispectral images fusion based on modified GS-SWT

Fusion of remote sensing images has received considerable attention during the last two decades, due to the contradiction between the spatial and spectral resolutions of remote sensing images. In this paper, a new fusion method based on Modified Gram-Schmidt (MGS) and stationary wavelet transform (SWT) has been presented to merge multispectral and panchromatic images. In order to show the effectiveness of the proposed method, experiments have been conducted on two datasets of QuickBird and WorldView-II, compared with several typical methods. Experimental results show that the proposed method performs better than the other methods both in the enhancement of spatial details and the preservation of spectral information.