def binary_hit_or_miss(input, structure1 = None, structure2 = None,
output = None, origin1 = 0, origin2 = None):
"""Multi-dimensional binary hit-or-miss transform.
An output array can optionally be provided. The origin parameters
controls the placement of the structuring elements. If the first
structuring element is not given one is generated with a squared
connectivity equal to one. If the second structuring element is
not provided, it set equal to the inverse of the first structuring
element. If the origin for the second structure is equal to None
it is set equal to the origin of the first.
"""
input = numarray.asarray(input)
if structure1 is None:
structure1 = generate_binary_structure(input.rank, 1)
if structure2 is None:
structure2 = numarray.logical_not(structure1)
origin1 = _ni_support._normalize_sequence(origin1, input.rank)
if origin2 is None:
origin2 = origin1
else:
origin2 = _ni_support._normalize_sequence(origin2, input.rank)
tmp1 = _binary_erosion(input, structure1, 1, None, None, 0, origin1,
0, False)
inplace = isinstance(output, numarray.NumArray)
result = _binary_erosion(input, structure2, 1, None, output, 0,
origin2, 1, False)
if inplace:
numarray.logical_not(output, output)
numarray.logical_and(tmp1, output, output)
else:
numarray.logical_not(result, result)
return numarray.logical_and(tmp1, result)
def binary_fill_holes(input, structure=None, output=None, origin=0):
"""Fill the holes in binary objects.
An output array can optionally be provided. The origin parameter
controls the placement of the filter. If no structuring element is
provided an element is generated with a squared connectivity equal
to one.
"""
mask = numarray.logical_not(input)
tmp = numarray.zeros(mask.shape, numarray.Bool)
inplace = isinstance(output, numarray.NumArray)
if inplace:
binary_dilation(tmp, structure, -1, mask, output, 1, origin)
numarray.logical_not(output, output)
else:
output = binary_dilation(tmp, structure, -1, mask, None, 1, origin)
numarray.logical_not(output, output)
return output
def binary_fill_holes(input, structure = None, output = None, origin = 0):
"""Fill the holes in binary objects.
An output array can optionally be provided. The origin parameter
controls the placement of the filter. If no structuring element is
provided an element is generated with a squared connectivity equal
to one.
"""
mask = numarray.logical_not(input)
tmp = numarray.zeros(mask.shape, numarray.Bool)
inplace = isinstance(output, numarray.NumArray)
if inplace:
binary_dilation(tmp, structure, -1, mask, output, 1, origin)
numarray.logical_not(output, output)
else:
output = binary_dilation(tmp, structure, -1, mask, None, 1,
origin)
numarray.logical_not(output, output)
return output
def MaskToList(mask):
"Turn a mask into a list of rows to delete"
mask = numarray.array( mask, numarray.Bool)
mask = numarray.logical_not(mask)
xr=numarray.arange( len(mask) )[mask]
xr=numarray.array(xr)
res=pybnfits.LongVector(len(xr))
for i,v in enumerate(xr):
res[i]=v+1
return res
def binary_hit_or_miss(input,
structure1=None,
structure2=None,
output=None,
origin1=0,
origin2=None):
"""Multi-dimensional binary hit-or-miss transform.
An output array can optionally be provided. The origin parameters
controls the placement of the structuring elements. If the first
structuring element is not given one is generated with a squared
connectivity equal to one. If the second structuring element is
not provided, it set equal to the inverse of the first structuring
element. If the origin for the second structure is equal to None
it is set equal to the origin of the first.
"""
input = numarray.asarray(input)
if structure1 is None:
structure1 = generate_binary_structure(input.rank, 1)
if structure2 is None:
structure2 = numarray.logical_not(structure1)
origin1 = _ni_support._normalize_sequence(origin1, input.rank)
if origin2 is None:
origin2 = origin1
else:
origin2 = _ni_support._normalize_sequence(origin2, input.rank)
tmp1 = _binary_erosion(input, structure1, 1, None, None, 0, origin1, 0,
False)
inplace = isinstance(output, numarray.NumArray)
result = _binary_erosion(input, structure2, 1, None, output, 0, origin2, 1,
False)
if inplace:
numarray.logical_not(output, output)
numarray.logical_and(tmp1, output, output)
else:
numarray.logical_not(result, result)
return numarray.logical_and(tmp1, result)
