The fusion methods such as HIS transform

Brovey transform and principal components transform could merge two optical image data of different resolutions——a high spatial reso lution panchromatic image and a low spatial resolution but multi spectral image. But these fusion methods requie the spectral response range of the high spatial resolution panchromatic image are equal or approximate to that of the multi spectral image. This paper brought forward a new kind of fusion method called Edge Enhancement Intensity Modulation（EEIM） that could merge two optical image data of different spectral characteristics based on solar radiation and land surface reflection model. By using a ratio between a high resolution image and its LOG filtered image

spatial details can be modulated to a co registered lower resolution multi spectral image without altering its spectral properties.This paper put also forward `Difference Matrix Frobenius Norm’ （DMFN） to evaluate difference of color between the EEIM image and multi spectral spectral image

The result of ‘ DMFN ’ showed that value of ` DMFN ’of the EEIM highei than method is less than the Brovey method

and the value of entropy of the EEIM image is higher than the Brovey image. The fused production of EEIM is more excellent at information amount and spectrum preserving.