Image fusion with spatial frequency

A process is designed to fuse multiple images of the same scene to produce an image that contains less noise and more information. First, the speckle noise is removed Second, histogram equalization is applied to expose details and maximize the information content of the image. Third, images are registered to prepare for fusion. In the fourth step, we apply our new pointwise spatial frequency methodology by computing it at each pixel in each image. The images are then fused at each output pixel location by comparing the pointwise spatial frequency values at that location in all images and selecting the pixel with the highest such value. The fifth step enlarges this image with fuzzy interpolation for more detail.