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Where do you get this relation from, any reference? I think it rather looks like
σresult = σimg / σfilter * Constant,
as the filter reduces the variance instead of increasing it.
Thanks for the idea of the padding, I did not find a way to circumvent that in matlab. But it is rather unlikely to...
Thanks for the reply!
"still the mean of the resulting image wouldn't be the same as the original image"
Please check the table above more carefully, I collected the numbers into a html table for better visibility. The mean of the resulting image matches the mean of the original, see columns in...
Hi there,
I am now getting familiar with the gauss filter in image processing, playing around with it a little. I noticed that the filter in matlab is quite sensitive on the mean value of the picture pixels, which I would not expect. In particular I notice that variance on filtered image is...
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