User Manual - pancroma

Set the standard deviation and if desired, the amplitude using the track barsliders.Gaussian DeconvolutionIn general, low pass filters are not especially interesting for satellite imageprocessing work except as an illustration of a more interesting topic, imagedeconvolution. The low pass filter will blur an image by convolving a Gaussianconvolution kernel with the target image.It is generally possible to recover the image by deconvolving the blurred imagewith the same convolution kernel. In particular, the Fourier transformed bandimage is divided by the Fourier Transform of the convolution kernel instead ofmultiplying. Theoretically, these images are inverse operations and the originalimage can be completely recovered.This can be seen in the following three images. The first one is the target image.The second image has been blurred using the low pass filter. The third imagehas been recovered by deconvolving with the Gaussian convolution kernel.291