把两个灰度图象融合在一起：用小波函数sym4对图象1进行2层分解，然后对分解系数图像融合：进行处理，突出轮廓，弱化细节。小波函数sym4对图象2进行2层分解。最后在小波的变换域里进行融合，再进行融合的系数的重构。-Grayscale images of the two together: The wavelet function sym4 1 to 2 layers of image decomposition, image fusion and the decomposition coefficients: for treatment, highlight the profile, weakening the details. Wavelet function sym4 2 for 2 on the image layer decomposition. Finally, in wavelet transform domain in the fusion, further integration of the coefficient of reconstruction.