A The Gaussian PSF makes as default an image of a Gaussian PSF with maximum pixel value 65535. This is to avoid round off error, and has the effect that the when you convolve this with an image, the resulting image will be much brighter than the original, so usually you would use IFFT Scaled instead of FFT Unscaled for the last stage. You can also chose to have it produce an FFT directly. In that case the convolution will result in an image of the same brightness. When the corruption in the picture is linear.
Histogram equalization is unlinear, so do that as the last stage.
Also over exposure is unlinear, so check the histogram of any suspicious area. When the noise is reasonably low. Copyright 1996-1999, Aragon Systems , All rights reserved .