For the optimal weighted coefficients of per frame fused video sequences image are variable, the method of PCA is applied to automatic adaptive selecting the weighted coefficients of the low frequency layers which are decomposed by the Laplace pyramid. For the sake of enhancing the video image contrast, a partial contrast method based on the fusion formula of the high frequency layers of Laplace pyramid is presented in this paper. Finally, some measures are
presented to enhance the fused video effect based on the characteristic of each layer of the Laplace pyramid. Experimental
results show that our method is effective.