Re: Size of Gaussian filter for best subsampling

Hi Jonathon,

Low-pass filtering before sub-sampling is a good idea. Your sub-sampled
data will show fewer signs of noise (depending upon the filter and
sub-sample size, of course). You'll want to tailor your low-pass filter
to the expected sub-sample size. For example, bilinear smoothing is
good if you want to sub-sample every other pixel, or so. However,
bilinear smoothing followed by sub-sampling every 50th pixel will most
likely result in a noisy output.

Hope that helps,
Mike
m.o.o.s.h.a.t.m.o.o.s.h.w.e.r.k.s.d.o.t.c.o.m

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