The Selection method is also one of the trivial methods of image fusion. But unlike averaging method, instead of averaging every corresponding pixel, a selection process if performed here. The criterion of selection is self explained by the name of the method. Of every corresponding pixel of the input images, the pixel with maximum intensity is selected and is put in as the resultant pixel of the fused image. Thus, effectively, every pixel of the fused image will be the pixel with maximum intensity of the corresponding position pixels in the input image.