skimage.filter.rank.percentile usage question
8 May 2013 8 May '13
I'm wanting to use the rank filter module in skimage, but I'm not sure about the usage of percentile(). My intuition of how a percentile filter should work is:
for each pixel: grab all the values in the structuring element centred at that pixel sort them find the requested percentile; interpolate if necessary replace pixel with that value
However, the function doesn't require one percentile but two, p0 and p1. The docstring says "Only levels between percentiles [p0, p1] are used", but I don't understand what this means. What if three different values fall between p0 and p1? What if no values fall between them?
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