1. A method comprising: using one or more processors to perform operations comprising: obtaining a low frequency band image intermediate from an input image; obtaining an upsampled image intermediate; and estimating a result image based at least in part on the upsampled image intermediate, the low frequency band image intermediate, and the input image, the input image is of a smaller scale than the result image, and the estimating the result image further comprises averaging the overlapping pixels to eliminate from the result image noise that is present in the input image.