Based on the properties of NonSubsampled Contourlet Transform

shift invariance

multiscale and multidirectional expansion

a novel multisensor images fusion method was proposed.The proposed method was applied to the multifocus and the multispectral images fusion in the experiments respectively.We gave the subjective judgment and numeric measurement of the fusion image based on visual effect and information indexes.To evaluate the performance of the proposed algorithms

we compared our results with those of the algorithms

such as contourlet transform

wavelet transform and principal component analysis.The simulation results indicate that the proposed method outperforms the others in terms of both visual quality and objective evaluation criteria

and maintains much more detail information as well.At the same time

the proposed algorithm widens the applications of the NSCT.