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automata/dil.py

Created May 26, 2014 11:45
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grey dilation
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dil.py
# coding: utf-8
from scipy import ndimage
import numpy as np
a = np.array([[0, 0, 0, 0, 0],
[0, 10, 150, 2, 0],
[0, 0, 0, 200, 0],
[0, 0, 0, 0, 0],
[0, 20, 300, 0, 0],
[0, 0, 0, 0, 0]])
k = np.array([[True, True, True],
[True, False, True],
[True, True, True]])
k2 = np.array([[False, True, False],
[True, True, True],
[False, True, False]])
d = ndimage.grey_dilation(a, footprint=k).astype(a.dtype)
r = (a > d).astype(a.dtype)
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