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Explanation by ahojnnes

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radioxoma
2014-01-13 19:46:10 +03:00
parent 0079e8de5c
commit 38525fb423
1 changed files with 2 additions and 2 deletions
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skimage/filter/thresholding.py
+2 -2
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@@ -237,8 +237,8 @@ def threshold_isodata(image, nbins=256):
# returns `bin_centers` containing only one value. Speed up with it.
if bin_centers.size == 1:
return bin_centers[0]
# It is not necessary to calculate probability mass function in this case
# since the l and h fractions are reduced.
# It is not necessary to calculate the probability mass function here,
# because the l and h fractions already include the normalization.
pmf = hist.astype(np.float32) # / hist.sum()
cpmfl = np.cumsum(pmf, dtype=np.float32)
cpmfh = np.cumsum(pmf[::-1], dtype=np.float32)[::-1]