library packages
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.venv/lib/python3.12/site-packages/scipy/ndimage/__init__.py
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.venv/lib/python3.12/site-packages/scipy/ndimage/__init__.py
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"""
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=========================================================
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Multidimensional image processing (:mod:`scipy.ndimage`)
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=========================================================
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.. currentmodule:: scipy.ndimage
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This package contains various functions for multidimensional image
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processing.
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Filters
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=======
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.. autosummary::
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:toctree: generated/
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convolve - Multidimensional convolution
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convolve1d - 1-D convolution along the given axis
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correlate - Multidimensional correlation
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correlate1d - 1-D correlation along the given axis
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gaussian_filter
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gaussian_filter1d
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gaussian_gradient_magnitude
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gaussian_laplace
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generic_filter - Multidimensional filter using a given function
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generic_filter1d - 1-D generic filter along the given axis
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generic_gradient_magnitude
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generic_laplace
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laplace - N-D Laplace filter based on approximate second derivatives
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maximum_filter
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maximum_filter1d
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median_filter - Calculates a multidimensional median filter
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minimum_filter
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minimum_filter1d
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percentile_filter - Calculates a multidimensional percentile filter
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prewitt
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rank_filter - Calculates a multidimensional rank filter
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sobel
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uniform_filter - Multidimensional uniform filter
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uniform_filter1d - 1-D uniform filter along the given axis
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Fourier filters
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===============
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.. autosummary::
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:toctree: generated/
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fourier_ellipsoid
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fourier_gaussian
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fourier_shift
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fourier_uniform
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Interpolation
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=============
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.. autosummary::
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:toctree: generated/
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affine_transform - Apply an affine transformation
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geometric_transform - Apply an arbitrary geometric transform
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map_coordinates - Map input array to new coordinates by interpolation
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rotate - Rotate an array
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shift - Shift an array
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spline_filter
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spline_filter1d
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zoom - Zoom an array
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Measurements
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============
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.. autosummary::
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:toctree: generated/
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center_of_mass - The center of mass of the values of an array at labels
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extrema - Min's and max's of an array at labels, with their positions
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find_objects - Find objects in a labeled array
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histogram - Histogram of the values of an array, optionally at labels
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label - Label features in an array
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labeled_comprehension
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maximum
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maximum_position
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mean - Mean of the values of an array at labels
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median
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minimum
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minimum_position
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standard_deviation - Standard deviation of an N-D image array
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sum_labels - Sum of the values of the array
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value_indices - Find indices of each distinct value in given array
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variance - Variance of the values of an N-D image array
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watershed_ift
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Morphology
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==========
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.. autosummary::
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:toctree: generated/
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binary_closing
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binary_dilation
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binary_erosion
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binary_fill_holes
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binary_hit_or_miss
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binary_opening
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binary_propagation
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black_tophat
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distance_transform_bf
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distance_transform_cdt
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distance_transform_edt
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generate_binary_structure
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grey_closing
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grey_dilation
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grey_erosion
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grey_opening
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iterate_structure
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morphological_gradient
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morphological_laplace
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white_tophat
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"""
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# Copyright (C) 2003-2005 Peter J. Verveer
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
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||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
#
|
||||
# 2. Redistributions in binary form must reproduce the above
|
||||
# copyright notice, this list of conditions and the following
|
||||
# disclaimer in the documentation and/or other materials provided
|
||||
# with the distribution.
|
||||
#
|
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# 3. The name of the author may not be used to endorse or promote
|
||||
# products derived from this software without specific prior
|
||||
# written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
||||
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
||||
# GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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from ._filters import *
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from ._fourier import *
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from ._interpolation import *
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from ._measurements import *
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from ._morphology import *
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# Deprecated namespaces, to be removed in v2.0.0
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from . import filters
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from . import fourier
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from . import interpolation
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from . import measurements
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from . import morphology
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__all__ = [s for s in dir() if not s.startswith('_')]
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from scipy._lib._testutils import PytestTester
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test = PytestTester(__name__)
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del PytestTester
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1858
.venv/lib/python3.12/site-packages/scipy/ndimage/_filters.py
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1858
.venv/lib/python3.12/site-packages/scipy/ndimage/_filters.py
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306
.venv/lib/python3.12/site-packages/scipy/ndimage/_fourier.py
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.venv/lib/python3.12/site-packages/scipy/ndimage/_fourier.py
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# Copyright (C) 2003-2005 Peter J. Verveer
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#
|
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# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
#
|
||||
# 2. Redistributions in binary form must reproduce the above
|
||||
# copyright notice, this list of conditions and the following
|
||||
# disclaimer in the documentation and/or other materials provided
|
||||
# with the distribution.
|
||||
#
|
||||
# 3. The name of the author may not be used to endorse or promote
|
||||
# products derived from this software without specific prior
|
||||
# written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
||||
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
||||
# GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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import numpy as np
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from scipy._lib._util import normalize_axis_index
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from . import _ni_support
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from . import _nd_image
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__all__ = ['fourier_gaussian', 'fourier_uniform', 'fourier_ellipsoid',
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'fourier_shift']
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def _get_output_fourier(output, input):
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if output is None:
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if input.dtype.type in [np.complex64, np.complex128, np.float32]:
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output = np.zeros(input.shape, dtype=input.dtype)
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else:
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output = np.zeros(input.shape, dtype=np.float64)
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elif type(output) is type:
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if output not in [np.complex64, np.complex128,
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np.float32, np.float64]:
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raise RuntimeError("output type not supported")
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output = np.zeros(input.shape, dtype=output)
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elif output.shape != input.shape:
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raise RuntimeError("output shape not correct")
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return output
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def _get_output_fourier_complex(output, input):
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if output is None:
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if input.dtype.type in [np.complex64, np.complex128]:
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output = np.zeros(input.shape, dtype=input.dtype)
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else:
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output = np.zeros(input.shape, dtype=np.complex128)
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elif type(output) is type:
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if output not in [np.complex64, np.complex128]:
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raise RuntimeError("output type not supported")
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output = np.zeros(input.shape, dtype=output)
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elif output.shape != input.shape:
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raise RuntimeError("output shape not correct")
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return output
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def fourier_gaussian(input, sigma, n=-1, axis=-1, output=None):
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"""
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Multidimensional Gaussian fourier filter.
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The array is multiplied with the fourier transform of a Gaussian
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kernel.
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Parameters
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----------
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input : array_like
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The input array.
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sigma : float or sequence
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The sigma of the Gaussian kernel. If a float, `sigma` is the same for
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all axes. If a sequence, `sigma` has to contain one value for each
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axis.
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n : int, optional
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If `n` is negative (default), then the input is assumed to be the
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result of a complex fft.
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If `n` is larger than or equal to zero, the input is assumed to be the
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result of a real fft, and `n` gives the length of the array before
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transformation along the real transform direction.
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axis : int, optional
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The axis of the real transform.
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output : ndarray, optional
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If given, the result of filtering the input is placed in this array.
|
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Returns
|
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-------
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fourier_gaussian : ndarray
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The filtered input.
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Examples
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||||
--------
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>>> from scipy import ndimage, datasets
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>>> import numpy.fft
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>>> import matplotlib.pyplot as plt
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>>> fig, (ax1, ax2) = plt.subplots(1, 2)
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>>> plt.gray() # show the filtered result in grayscale
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>>> ascent = datasets.ascent()
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>>> input_ = numpy.fft.fft2(ascent)
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>>> result = ndimage.fourier_gaussian(input_, sigma=4)
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>>> result = numpy.fft.ifft2(result)
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>>> ax1.imshow(ascent)
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>>> ax2.imshow(result.real) # the imaginary part is an artifact
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>>> plt.show()
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"""
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input = np.asarray(input)
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output = _get_output_fourier(output, input)
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axis = normalize_axis_index(axis, input.ndim)
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sigmas = _ni_support._normalize_sequence(sigma, input.ndim)
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sigmas = np.asarray(sigmas, dtype=np.float64)
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if not sigmas.flags.contiguous:
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sigmas = sigmas.copy()
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_nd_image.fourier_filter(input, sigmas, n, axis, output, 0)
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return output
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def fourier_uniform(input, size, n=-1, axis=-1, output=None):
|
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"""
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Multidimensional uniform fourier filter.
|
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The array is multiplied with the Fourier transform of a box of given
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size.
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Parameters
|
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----------
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input : array_like
|
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The input array.
|
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size : float or sequence
|
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The size of the box used for filtering.
|
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If a float, `size` is the same for all axes. If a sequence, `size` has
|
||||
to contain one value for each axis.
|
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n : int, optional
|
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If `n` is negative (default), then the input is assumed to be the
|
||||
result of a complex fft.
|
||||
If `n` is larger than or equal to zero, the input is assumed to be the
|
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result of a real fft, and `n` gives the length of the array before
|
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transformation along the real transform direction.
|
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axis : int, optional
|
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The axis of the real transform.
|
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output : ndarray, optional
|
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If given, the result of filtering the input is placed in this array.
|
||||
|
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Returns
|
||||
-------
|
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fourier_uniform : ndarray
|
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The filtered input.
|
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Examples
|
||||
--------
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>>> from scipy import ndimage, datasets
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>>> import numpy.fft
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>>> import matplotlib.pyplot as plt
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>>> fig, (ax1, ax2) = plt.subplots(1, 2)
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>>> plt.gray() # show the filtered result in grayscale
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>>> ascent = datasets.ascent()
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>>> input_ = numpy.fft.fft2(ascent)
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>>> result = ndimage.fourier_uniform(input_, size=20)
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>>> result = numpy.fft.ifft2(result)
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>>> ax1.imshow(ascent)
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>>> ax2.imshow(result.real) # the imaginary part is an artifact
|
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>>> plt.show()
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||||
"""
|
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input = np.asarray(input)
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output = _get_output_fourier(output, input)
|
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axis = normalize_axis_index(axis, input.ndim)
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sizes = _ni_support._normalize_sequence(size, input.ndim)
|
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sizes = np.asarray(sizes, dtype=np.float64)
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if not sizes.flags.contiguous:
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sizes = sizes.copy()
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_nd_image.fourier_filter(input, sizes, n, axis, output, 1)
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return output
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def fourier_ellipsoid(input, size, n=-1, axis=-1, output=None):
|
||||
"""
|
||||
Multidimensional ellipsoid Fourier filter.
|
||||
|
||||
The array is multiplied with the fourier transform of an ellipsoid of
|
||||
given sizes.
|
||||
|
||||
Parameters
|
||||
----------
|
||||
input : array_like
|
||||
The input array.
|
||||
size : float or sequence
|
||||
The size of the box used for filtering.
|
||||
If a float, `size` is the same for all axes. If a sequence, `size` has
|
||||
to contain one value for each axis.
|
||||
n : int, optional
|
||||
If `n` is negative (default), then the input is assumed to be the
|
||||
result of a complex fft.
|
||||
If `n` is larger than or equal to zero, the input is assumed to be the
|
||||
result of a real fft, and `n` gives the length of the array before
|
||||
transformation along the real transform direction.
|
||||
axis : int, optional
|
||||
The axis of the real transform.
|
||||
output : ndarray, optional
|
||||
If given, the result of filtering the input is placed in this array.
|
||||
|
||||
Returns
|
||||
-------
|
||||
fourier_ellipsoid : ndarray
|
||||
The filtered input.
|
||||
|
||||
Notes
|
||||
-----
|
||||
This function is implemented for arrays of rank 1, 2, or 3.
|
||||
|
||||
Examples
|
||||
--------
|
||||
>>> from scipy import ndimage, datasets
|
||||
>>> import numpy.fft
|
||||
>>> import matplotlib.pyplot as plt
|
||||
>>> fig, (ax1, ax2) = plt.subplots(1, 2)
|
||||
>>> plt.gray() # show the filtered result in grayscale
|
||||
>>> ascent = datasets.ascent()
|
||||
>>> input_ = numpy.fft.fft2(ascent)
|
||||
>>> result = ndimage.fourier_ellipsoid(input_, size=20)
|
||||
>>> result = numpy.fft.ifft2(result)
|
||||
>>> ax1.imshow(ascent)
|
||||
>>> ax2.imshow(result.real) # the imaginary part is an artifact
|
||||
>>> plt.show()
|
||||
"""
|
||||
input = np.asarray(input)
|
||||
if input.ndim > 3:
|
||||
raise NotImplementedError("Only 1d, 2d and 3d inputs are supported")
|
||||
output = _get_output_fourier(output, input)
|
||||
if output.size == 0:
|
||||
# The C code has a bug that can result in a segfault with arrays
|
||||
# that have size 0 (gh-17270), so check here.
|
||||
return output
|
||||
axis = normalize_axis_index(axis, input.ndim)
|
||||
sizes = _ni_support._normalize_sequence(size, input.ndim)
|
||||
sizes = np.asarray(sizes, dtype=np.float64)
|
||||
if not sizes.flags.contiguous:
|
||||
sizes = sizes.copy()
|
||||
_nd_image.fourier_filter(input, sizes, n, axis, output, 2)
|
||||
return output
|
||||
|
||||
|
||||
def fourier_shift(input, shift, n=-1, axis=-1, output=None):
|
||||
"""
|
||||
Multidimensional Fourier shift filter.
|
||||
|
||||
The array is multiplied with the Fourier transform of a shift operation.
|
||||
|
||||
Parameters
|
||||
----------
|
||||
input : array_like
|
||||
The input array.
|
||||
shift : float or sequence
|
||||
The size of the box used for filtering.
|
||||
If a float, `shift` is the same for all axes. If a sequence, `shift`
|
||||
has to contain one value for each axis.
|
||||
n : int, optional
|
||||
If `n` is negative (default), then the input is assumed to be the
|
||||
result of a complex fft.
|
||||
If `n` is larger than or equal to zero, the input is assumed to be the
|
||||
result of a real fft, and `n` gives the length of the array before
|
||||
transformation along the real transform direction.
|
||||
axis : int, optional
|
||||
The axis of the real transform.
|
||||
output : ndarray, optional
|
||||
If given, the result of shifting the input is placed in this array.
|
||||
|
||||
Returns
|
||||
-------
|
||||
fourier_shift : ndarray
|
||||
The shifted input.
|
||||
|
||||
Examples
|
||||
--------
|
||||
>>> from scipy import ndimage, datasets
|
||||
>>> import matplotlib.pyplot as plt
|
||||
>>> import numpy.fft
|
||||
>>> fig, (ax1, ax2) = plt.subplots(1, 2)
|
||||
>>> plt.gray() # show the filtered result in grayscale
|
||||
>>> ascent = datasets.ascent()
|
||||
>>> input_ = numpy.fft.fft2(ascent)
|
||||
>>> result = ndimage.fourier_shift(input_, shift=200)
|
||||
>>> result = numpy.fft.ifft2(result)
|
||||
>>> ax1.imshow(ascent)
|
||||
>>> ax2.imshow(result.real) # the imaginary part is an artifact
|
||||
>>> plt.show()
|
||||
"""
|
||||
input = np.asarray(input)
|
||||
output = _get_output_fourier_complex(output, input)
|
||||
axis = normalize_axis_index(axis, input.ndim)
|
||||
shifts = _ni_support._normalize_sequence(shift, input.ndim)
|
||||
shifts = np.asarray(shifts, dtype=np.float64)
|
||||
if not shifts.flags.contiguous:
|
||||
shifts = shifts.copy()
|
||||
_nd_image.fourier_shift(input, shifts, n, axis, output)
|
||||
return output
|
||||
1001
.venv/lib/python3.12/site-packages/scipy/ndimage/_interpolation.py
Normal file
1001
.venv/lib/python3.12/site-packages/scipy/ndimage/_interpolation.py
Normal file
File diff suppressed because it is too large
Load Diff
1680
.venv/lib/python3.12/site-packages/scipy/ndimage/_measurements.py
Normal file
1680
.venv/lib/python3.12/site-packages/scipy/ndimage/_measurements.py
Normal file
File diff suppressed because it is too large
Load Diff
2537
.venv/lib/python3.12/site-packages/scipy/ndimage/_morphology.py
Normal file
2537
.venv/lib/python3.12/site-packages/scipy/ndimage/_morphology.py
Normal file
File diff suppressed because it is too large
Load Diff
Binary file not shown.
@@ -0,0 +1,208 @@
|
||||
"""Docstring components common to several ndimage functions."""
|
||||
from scipy._lib import doccer
|
||||
|
||||
__all__ = ['docfiller']
|
||||
|
||||
|
||||
_input_doc = (
|
||||
"""input : array_like
|
||||
The input array.""")
|
||||
_axis_doc = (
|
||||
"""axis : int, optional
|
||||
The axis of `input` along which to calculate. Default is -1.""")
|
||||
_output_doc = (
|
||||
"""output : array or dtype, optional
|
||||
The array in which to place the output, or the dtype of the
|
||||
returned array. By default an array of the same dtype as input
|
||||
will be created.""")
|
||||
_size_foot_doc = (
|
||||
"""size : scalar or tuple, optional
|
||||
See footprint, below. Ignored if footprint is given.
|
||||
footprint : array, optional
|
||||
Either `size` or `footprint` must be defined. `size` gives
|
||||
the shape that is taken from the input array, at every element
|
||||
position, to define the input to the filter function.
|
||||
`footprint` is a boolean array that specifies (implicitly) a
|
||||
shape, but also which of the elements within this shape will get
|
||||
passed to the filter function. Thus ``size=(n,m)`` is equivalent
|
||||
to ``footprint=np.ones((n,m))``. We adjust `size` to the number
|
||||
of dimensions of the input array, so that, if the input array is
|
||||
shape (10,10,10), and `size` is 2, then the actual size used is
|
||||
(2,2,2). When `footprint` is given, `size` is ignored.""")
|
||||
_mode_reflect_doc = (
|
||||
"""mode : {'reflect', 'constant', 'nearest', 'mirror', 'wrap'}, optional
|
||||
The `mode` parameter determines how the input array is extended
|
||||
beyond its boundaries. Default is 'reflect'. Behavior for each valid
|
||||
value is as follows:
|
||||
|
||||
'reflect' (`d c b a | a b c d | d c b a`)
|
||||
The input is extended by reflecting about the edge of the last
|
||||
pixel. This mode is also sometimes referred to as half-sample
|
||||
symmetric.
|
||||
|
||||
'constant' (`k k k k | a b c d | k k k k`)
|
||||
The input is extended by filling all values beyond the edge with
|
||||
the same constant value, defined by the `cval` parameter.
|
||||
|
||||
'nearest' (`a a a a | a b c d | d d d d`)
|
||||
The input is extended by replicating the last pixel.
|
||||
|
||||
'mirror' (`d c b | a b c d | c b a`)
|
||||
The input is extended by reflecting about the center of the last
|
||||
pixel. This mode is also sometimes referred to as whole-sample
|
||||
symmetric.
|
||||
|
||||
'wrap' (`a b c d | a b c d | a b c d`)
|
||||
The input is extended by wrapping around to the opposite edge.
|
||||
|
||||
For consistency with the interpolation functions, the following mode
|
||||
names can also be used:
|
||||
|
||||
'grid-mirror'
|
||||
This is a synonym for 'reflect'.
|
||||
|
||||
'grid-constant'
|
||||
This is a synonym for 'constant'.
|
||||
|
||||
'grid-wrap'
|
||||
This is a synonym for 'wrap'.""")
|
||||
|
||||
_mode_interp_constant_doc = (
|
||||
"""mode : {'reflect', 'grid-mirror', 'constant', 'grid-constant', 'nearest', \
|
||||
'mirror', 'grid-wrap', 'wrap'}, optional
|
||||
The `mode` parameter determines how the input array is extended
|
||||
beyond its boundaries. Default is 'constant'. Behavior for each valid
|
||||
value is as follows (see additional plots and details on
|
||||
:ref:`boundary modes <ndimage-interpolation-modes>`):
|
||||
|
||||
'reflect' (`d c b a | a b c d | d c b a`)
|
||||
The input is extended by reflecting about the edge of the last
|
||||
pixel. This mode is also sometimes referred to as half-sample
|
||||
symmetric.
|
||||
|
||||
'grid-mirror'
|
||||
This is a synonym for 'reflect'.
|
||||
|
||||
'constant' (`k k k k | a b c d | k k k k`)
|
||||
The input is extended by filling all values beyond the edge with
|
||||
the same constant value, defined by the `cval` parameter. No
|
||||
interpolation is performed beyond the edges of the input.
|
||||
|
||||
'grid-constant' (`k k k k | a b c d | k k k k`)
|
||||
The input is extended by filling all values beyond the edge with
|
||||
the same constant value, defined by the `cval` parameter. Interpolation
|
||||
occurs for samples outside the input's extent as well.
|
||||
|
||||
'nearest' (`a a a a | a b c d | d d d d`)
|
||||
The input is extended by replicating the last pixel.
|
||||
|
||||
'mirror' (`d c b | a b c d | c b a`)
|
||||
The input is extended by reflecting about the center of the last
|
||||
pixel. This mode is also sometimes referred to as whole-sample
|
||||
symmetric.
|
||||
|
||||
'grid-wrap' (`a b c d | a b c d | a b c d`)
|
||||
The input is extended by wrapping around to the opposite edge.
|
||||
|
||||
'wrap' (`d b c d | a b c d | b c a b`)
|
||||
The input is extended by wrapping around to the opposite edge, but in a
|
||||
way such that the last point and initial point exactly overlap. In this
|
||||
case it is not well defined which sample will be chosen at the point of
|
||||
overlap.""")
|
||||
_mode_interp_mirror_doc = (
|
||||
_mode_interp_constant_doc.replace("Default is 'constant'",
|
||||
"Default is 'mirror'")
|
||||
)
|
||||
assert _mode_interp_mirror_doc != _mode_interp_constant_doc, \
|
||||
'Default not replaced'
|
||||
|
||||
_mode_multiple_doc = (
|
||||
"""mode : str or sequence, optional
|
||||
The `mode` parameter determines how the input array is extended
|
||||
when the filter overlaps a border. By passing a sequence of modes
|
||||
with length equal to the number of dimensions of the input array,
|
||||
different modes can be specified along each axis. Default value is
|
||||
'reflect'. The valid values and their behavior is as follows:
|
||||
|
||||
'reflect' (`d c b a | a b c d | d c b a`)
|
||||
The input is extended by reflecting about the edge of the last
|
||||
pixel. This mode is also sometimes referred to as half-sample
|
||||
symmetric.
|
||||
|
||||
'constant' (`k k k k | a b c d | k k k k`)
|
||||
The input is extended by filling all values beyond the edge with
|
||||
the same constant value, defined by the `cval` parameter.
|
||||
|
||||
'nearest' (`a a a a | a b c d | d d d d`)
|
||||
The input is extended by replicating the last pixel.
|
||||
|
||||
'mirror' (`d c b | a b c d | c b a`)
|
||||
The input is extended by reflecting about the center of the last
|
||||
pixel. This mode is also sometimes referred to as whole-sample
|
||||
symmetric.
|
||||
|
||||
'wrap' (`a b c d | a b c d | a b c d`)
|
||||
The input is extended by wrapping around to the opposite edge.
|
||||
|
||||
For consistency with the interpolation functions, the following mode
|
||||
names can also be used:
|
||||
|
||||
'grid-constant'
|
||||
This is a synonym for 'constant'.
|
||||
|
||||
'grid-mirror'
|
||||
This is a synonym for 'reflect'.
|
||||
|
||||
'grid-wrap'
|
||||
This is a synonym for 'wrap'.""")
|
||||
_cval_doc = (
|
||||
"""cval : scalar, optional
|
||||
Value to fill past edges of input if `mode` is 'constant'. Default
|
||||
is 0.0.""")
|
||||
_origin_doc = (
|
||||
"""origin : int, optional
|
||||
Controls the placement of the filter on the input array's pixels.
|
||||
A value of 0 (the default) centers the filter over the pixel, with
|
||||
positive values shifting the filter to the left, and negative ones
|
||||
to the right.""")
|
||||
_origin_multiple_doc = (
|
||||
"""origin : int or sequence, optional
|
||||
Controls the placement of the filter on the input array's pixels.
|
||||
A value of 0 (the default) centers the filter over the pixel, with
|
||||
positive values shifting the filter to the left, and negative ones
|
||||
to the right. By passing a sequence of origins with length equal to
|
||||
the number of dimensions of the input array, different shifts can
|
||||
be specified along each axis.""")
|
||||
_extra_arguments_doc = (
|
||||
"""extra_arguments : sequence, optional
|
||||
Sequence of extra positional arguments to pass to passed function.""")
|
||||
_extra_keywords_doc = (
|
||||
"""extra_keywords : dict, optional
|
||||
dict of extra keyword arguments to pass to passed function.""")
|
||||
_prefilter_doc = (
|
||||
"""prefilter : bool, optional
|
||||
Determines if the input array is prefiltered with `spline_filter`
|
||||
before interpolation. The default is True, which will create a
|
||||
temporary `float64` array of filtered values if `order > 1`. If
|
||||
setting this to False, the output will be slightly blurred if
|
||||
`order > 1`, unless the input is prefiltered, i.e. it is the result
|
||||
of calling `spline_filter` on the original input.""")
|
||||
|
||||
docdict = {
|
||||
'input': _input_doc,
|
||||
'axis': _axis_doc,
|
||||
'output': _output_doc,
|
||||
'size_foot': _size_foot_doc,
|
||||
'mode_interp_constant': _mode_interp_constant_doc,
|
||||
'mode_interp_mirror': _mode_interp_mirror_doc,
|
||||
'mode_reflect': _mode_reflect_doc,
|
||||
'mode_multiple': _mode_multiple_doc,
|
||||
'cval': _cval_doc,
|
||||
'origin': _origin_doc,
|
||||
'origin_multiple': _origin_multiple_doc,
|
||||
'extra_arguments': _extra_arguments_doc,
|
||||
'extra_keywords': _extra_keywords_doc,
|
||||
'prefilter': _prefilter_doc
|
||||
}
|
||||
|
||||
docfiller = doccer.filldoc(docdict)
|
||||
Binary file not shown.
119
.venv/lib/python3.12/site-packages/scipy/ndimage/_ni_support.py
Normal file
119
.venv/lib/python3.12/site-packages/scipy/ndimage/_ni_support.py
Normal file
@@ -0,0 +1,119 @@
|
||||
# Copyright (C) 2003-2005 Peter J. Verveer
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# 1. Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
#
|
||||
# 2. Redistributions in binary form must reproduce the above
|
||||
# copyright notice, this list of conditions and the following
|
||||
# disclaimer in the documentation and/or other materials provided
|
||||
# with the distribution.
|
||||
#
|
||||
# 3. The name of the author may not be used to endorse or promote
|
||||
# products derived from this software without specific prior
|
||||
# written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
||||
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
||||
# GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
from collections.abc import Iterable
|
||||
import operator
|
||||
import warnings
|
||||
import numpy as np
|
||||
|
||||
|
||||
def _extend_mode_to_code(mode):
|
||||
"""Convert an extension mode to the corresponding integer code.
|
||||
"""
|
||||
if mode == 'nearest':
|
||||
return 0
|
||||
elif mode == 'wrap':
|
||||
return 1
|
||||
elif mode in ['reflect', 'grid-mirror']:
|
||||
return 2
|
||||
elif mode == 'mirror':
|
||||
return 3
|
||||
elif mode == 'constant':
|
||||
return 4
|
||||
elif mode == 'grid-wrap':
|
||||
return 5
|
||||
elif mode == 'grid-constant':
|
||||
return 6
|
||||
else:
|
||||
raise RuntimeError('boundary mode not supported')
|
||||
|
||||
|
||||
def _normalize_sequence(input, rank):
|
||||
"""If input is a scalar, create a sequence of length equal to the
|
||||
rank by duplicating the input. If input is a sequence,
|
||||
check if its length is equal to the length of array.
|
||||
"""
|
||||
is_str = isinstance(input, str)
|
||||
if not is_str and isinstance(input, Iterable):
|
||||
normalized = list(input)
|
||||
if len(normalized) != rank:
|
||||
err = "sequence argument must have length equal to input rank"
|
||||
raise RuntimeError(err)
|
||||
else:
|
||||
normalized = [input] * rank
|
||||
return normalized
|
||||
|
||||
|
||||
def _get_output(output, input, shape=None, complex_output=False):
|
||||
if shape is None:
|
||||
shape = input.shape
|
||||
if output is None:
|
||||
if not complex_output:
|
||||
output = np.zeros(shape, dtype=input.dtype.name)
|
||||
else:
|
||||
complex_type = np.promote_types(input.dtype, np.complex64)
|
||||
output = np.zeros(shape, dtype=complex_type)
|
||||
elif isinstance(output, (type, np.dtype)):
|
||||
# Classes (like `np.float32`) and dtypes are interpreted as dtype
|
||||
if complex_output and np.dtype(output).kind != 'c':
|
||||
warnings.warn("promoting specified output dtype to complex", stacklevel=3)
|
||||
output = np.promote_types(output, np.complex64)
|
||||
output = np.zeros(shape, dtype=output)
|
||||
elif isinstance(output, str):
|
||||
output = np.dtype(output)
|
||||
if complex_output and output.kind != 'c':
|
||||
raise RuntimeError("output must have complex dtype")
|
||||
elif not issubclass(output.type, np.number):
|
||||
raise RuntimeError("output must have numeric dtype")
|
||||
output = np.zeros(shape, dtype=output)
|
||||
elif output.shape != shape:
|
||||
raise RuntimeError("output shape not correct")
|
||||
elif complex_output and output.dtype.kind != 'c':
|
||||
raise RuntimeError("output must have complex dtype")
|
||||
return output
|
||||
|
||||
|
||||
def _check_axes(axes, ndim):
|
||||
if axes is None:
|
||||
return tuple(range(ndim))
|
||||
elif np.isscalar(axes):
|
||||
axes = (operator.index(axes),)
|
||||
elif isinstance(axes, Iterable):
|
||||
for ax in axes:
|
||||
axes = tuple(operator.index(ax) for ax in axes)
|
||||
if ax < -ndim or ax > ndim - 1:
|
||||
raise ValueError(f"specified axis: {ax} is out of range")
|
||||
axes = tuple(ax % ndim if ax < 0 else ax for ax in axes)
|
||||
else:
|
||||
message = "axes must be an integer, iterable of integers, or None"
|
||||
raise ValueError(message)
|
||||
if len(tuple(set(axes))) != len(axes):
|
||||
raise ValueError("axes must be unique")
|
||||
return axes
|
||||
27
.venv/lib/python3.12/site-packages/scipy/ndimage/filters.py
Normal file
27
.venv/lib/python3.12/site-packages/scipy/ndimage/filters.py
Normal file
@@ -0,0 +1,27 @@
|
||||
# This file is not meant for public use and will be removed in SciPy v2.0.0.
|
||||
# Use the `scipy.ndimage` namespace for importing the functions
|
||||
# included below.
|
||||
|
||||
from scipy._lib.deprecation import _sub_module_deprecation
|
||||
|
||||
|
||||
__all__ = [ # noqa: F822
|
||||
'correlate1d', 'convolve1d', 'gaussian_filter1d',
|
||||
'gaussian_filter', 'prewitt', 'sobel', 'generic_laplace',
|
||||
'laplace', 'gaussian_laplace', 'generic_gradient_magnitude',
|
||||
'gaussian_gradient_magnitude', 'correlate', 'convolve',
|
||||
'uniform_filter1d', 'uniform_filter', 'minimum_filter1d',
|
||||
'maximum_filter1d', 'minimum_filter', 'maximum_filter',
|
||||
'rank_filter', 'median_filter', 'percentile_filter',
|
||||
'generic_filter1d', 'generic_filter'
|
||||
]
|
||||
|
||||
|
||||
def __dir__():
|
||||
return __all__
|
||||
|
||||
|
||||
def __getattr__(name):
|
||||
return _sub_module_deprecation(sub_package='ndimage', module='filters',
|
||||
private_modules=['_filters'], all=__all__,
|
||||
attribute=name)
|
||||
21
.venv/lib/python3.12/site-packages/scipy/ndimage/fourier.py
Normal file
21
.venv/lib/python3.12/site-packages/scipy/ndimage/fourier.py
Normal file
@@ -0,0 +1,21 @@
|
||||
# This file is not meant for public use and will be removed in SciPy v2.0.0.
|
||||
# Use the `scipy.ndimage` namespace for importing the functions
|
||||
# included below.
|
||||
|
||||
from scipy._lib.deprecation import _sub_module_deprecation
|
||||
|
||||
|
||||
__all__ = [ # noqa: F822
|
||||
'fourier_gaussian', 'fourier_uniform',
|
||||
'fourier_ellipsoid', 'fourier_shift'
|
||||
]
|
||||
|
||||
|
||||
def __dir__():
|
||||
return __all__
|
||||
|
||||
|
||||
def __getattr__(name):
|
||||
return _sub_module_deprecation(sub_package='ndimage', module='fourier',
|
||||
private_modules=['_fourier'], all=__all__,
|
||||
attribute=name)
|
||||
@@ -0,0 +1,22 @@
|
||||
# This file is not meant for public use and will be removed in SciPy v2.0.0.
|
||||
# Use the `scipy.ndimage` namespace for importing the functions
|
||||
# included below.
|
||||
|
||||
from scipy._lib.deprecation import _sub_module_deprecation
|
||||
|
||||
|
||||
__all__ = [ # noqa: F822
|
||||
'spline_filter1d', 'spline_filter',
|
||||
'geometric_transform', 'map_coordinates',
|
||||
'affine_transform', 'shift', 'zoom', 'rotate',
|
||||
]
|
||||
|
||||
|
||||
def __dir__():
|
||||
return __all__
|
||||
|
||||
|
||||
def __getattr__(name):
|
||||
return _sub_module_deprecation(sub_package='ndimage', module='interpolation',
|
||||
private_modules=['_interpolation'], all=__all__,
|
||||
attribute=name)
|
||||
@@ -0,0 +1,24 @@
|
||||
# This file is not meant for public use and will be removed in SciPy v2.0.0.
|
||||
# Use the `scipy.ndimage` namespace for importing the functions
|
||||
# included below.
|
||||
|
||||
from scipy._lib.deprecation import _sub_module_deprecation
|
||||
|
||||
|
||||
__all__ = [ # noqa: F822
|
||||
'label', 'find_objects', 'labeled_comprehension',
|
||||
'sum', 'mean', 'variance', 'standard_deviation',
|
||||
'minimum', 'maximum', 'median', 'minimum_position',
|
||||
'maximum_position', 'extrema', 'center_of_mass',
|
||||
'histogram', 'watershed_ift', 'sum_labels'
|
||||
]
|
||||
|
||||
|
||||
def __dir__():
|
||||
return __all__
|
||||
|
||||
|
||||
def __getattr__(name):
|
||||
return _sub_module_deprecation(sub_package='ndimage', module='measurements',
|
||||
private_modules=['_measurements'], all=__all__,
|
||||
attribute=name)
|
||||
@@ -0,0 +1,27 @@
|
||||
# This file is not meant for public use and will be removed in SciPy v2.0.0.
|
||||
# Use the `scipy.ndimage` namespace for importing the functions
|
||||
# included below.
|
||||
|
||||
from scipy._lib.deprecation import _sub_module_deprecation
|
||||
|
||||
|
||||
__all__ = [ # noqa: F822
|
||||
'iterate_structure', 'generate_binary_structure',
|
||||
'binary_erosion', 'binary_dilation', 'binary_opening',
|
||||
'binary_closing', 'binary_hit_or_miss', 'binary_propagation',
|
||||
'binary_fill_holes', 'grey_erosion', 'grey_dilation',
|
||||
'grey_opening', 'grey_closing', 'morphological_gradient',
|
||||
'morphological_laplace', 'white_tophat', 'black_tophat',
|
||||
'distance_transform_bf', 'distance_transform_cdt',
|
||||
'distance_transform_edt'
|
||||
]
|
||||
|
||||
|
||||
def __dir__():
|
||||
return __all__
|
||||
|
||||
|
||||
def __getattr__(name):
|
||||
return _sub_module_deprecation(sub_package='ndimage', module='morphology',
|
||||
private_modules=['_morphology'], all=__all__,
|
||||
attribute=name)
|
||||
@@ -0,0 +1,13 @@
|
||||
from __future__ import annotations
|
||||
import numpy as np
|
||||
|
||||
# list of numarray data types
|
||||
integer_types: list[type] = [
|
||||
np.int8, np.uint8, np.int16, np.uint16,
|
||||
np.int32, np.uint32, np.int64, np.uint64]
|
||||
|
||||
float_types: list[type] = [np.float32, np.float64]
|
||||
|
||||
complex_types: list[type] = [np.complex64, np.complex128]
|
||||
|
||||
types: list[type] = integer_types + float_types
|
||||
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@@ -0,0 +1,21 @@
|
||||
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|
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|
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|
||||
1 1 1 1 1 1 1
|
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|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 0 1 1 1
|
||||
1 1 0 0 0 1 1
|
||||
1 0 1 0 1 0 1
|
||||
0 0 0 1 0 0 0
|
||||
1 0 1 0 1 0 1
|
||||
1 1 0 0 0 1 1
|
||||
1 1 1 0 1 1 1
|
||||
1 0 1 1 1 0 1
|
||||
0 0 0 1 0 0 0
|
||||
1 0 0 1 0 0 1
|
||||
1 1 1 1 1 1 1
|
||||
1 0 0 1 0 0 1
|
||||
0 0 0 1 0 0 0
|
||||
1 0 1 1 1 0 1
|
||||
@@ -0,0 +1,294 @@
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
2 2 2 2 2 2 2
|
||||
3 3 3 3 3 3 3
|
||||
4 4 4 4 4 4 4
|
||||
5 5 5 5 5 5 5
|
||||
6 6 6 6 6 6 6
|
||||
7 7 7 7 7 7 7
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 2 3 4 5 6 7
|
||||
8 9 10 11 12 13 14
|
||||
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|
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22 23 24 25 26 27 28
|
||||
29 30 31 32 33 34 35
|
||||
36 37 38 39 40 41 42
|
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43 44 45 46 47 48 49
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
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|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 2 3 4 5 6 7
|
||||
8 1 2 3 4 5 6
|
||||
9 8 1 2 3 4 5
|
||||
10 9 8 1 2 3 4
|
||||
11 10 9 8 1 2 3
|
||||
12 11 10 9 8 1 2
|
||||
13 12 11 10 9 8 1
|
||||
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|
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|
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|
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|
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|
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|
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|
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|
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|
||||
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|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 2 1 2 1 2 1
|
||||
2 1 2 1 2 1 2
|
||||
1 2 1 2 1 2 1
|
||||
2 1 2 1 2 1 2
|
||||
1 2 1 2 1 2 1
|
||||
2 1 2 1 2 1 2
|
||||
1 2 1 2 1 2 1
|
||||
1 2 3 4 5 6 7
|
||||
2 3 4 5 6 7 8
|
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|
||||
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|
||||
5 6 7 8 9 10 11
|
||||
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|
||||
7 8 9 10 11 12 13
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 1 1 1 1
|
||||
1 1 1 0 2 2 2
|
||||
1 1 0 0 0 2 2
|
||||
1 0 3 0 2 0 4
|
||||
0 0 0 2 0 0 0
|
||||
5 0 2 0 6 0 7
|
||||
2 2 0 0 0 7 7
|
||||
2 2 2 0 7 7 7
|
||||
1 1 1 0 2 2 2
|
||||
1 1 0 0 0 2 2
|
||||
3 0 1 0 4 0 2
|
||||
0 0 0 1 0 0 0
|
||||
5 0 6 0 1 0 7
|
||||
5 5 0 0 0 1 1
|
||||
5 5 5 0 1 1 1
|
||||
1 1 1 0 2 2 2
|
||||
3 3 0 0 0 4 4
|
||||
5 0 6 0 7 0 8
|
||||
0 0 0 9 0 0 0
|
||||
10 0 11 0 12 0 13
|
||||
14 14 0 0 0 15 15
|
||||
16 16 16 0 17 17 17
|
||||
1 1 1 0 2 3 3
|
||||
1 1 0 0 0 3 3
|
||||
1 0 4 0 3 0 3
|
||||
0 0 0 3 0 0 0
|
||||
3 0 3 0 5 0 6
|
||||
3 3 0 0 0 6 6
|
||||
3 3 7 0 6 6 6
|
||||
1 2 3 0 4 5 6
|
||||
7 8 0 0 0 9 10
|
||||
11 0 12 0 13 0 14
|
||||
0 0 0 15 0 0 0
|
||||
16 0 17 0 18 0 19
|
||||
20 21 0 0 0 22 23
|
||||
24 25 26 0 27 28 29
|
||||
1 1 1 0 2 2 2
|
||||
1 1 0 0 0 2 2
|
||||
1 0 3 0 2 0 2
|
||||
0 0 0 2 0 0 0
|
||||
2 0 2 0 4 0 5
|
||||
2 2 0 0 0 5 5
|
||||
2 2 2 0 5 5 5
|
||||
1 1 1 0 2 2 2
|
||||
1 1 0 0 0 2 2
|
||||
1 0 3 0 4 0 2
|
||||
0 0 0 5 0 0 0
|
||||
6 0 7 0 8 0 9
|
||||
6 6 0 0 0 9 9
|
||||
6 6 6 0 9 9 9
|
||||
1 2 3 0 4 5 6
|
||||
7 1 0 0 0 4 5
|
||||
8 0 1 0 9 0 4
|
||||
0 0 0 1 0 0 0
|
||||
10 0 11 0 1 0 12
|
||||
13 10 0 0 0 1 14
|
||||
15 13 10 0 16 17 1
|
||||
1 2 3 0 4 5 6
|
||||
1 2 0 0 0 5 6
|
||||
1 0 7 0 8 0 6
|
||||
0 0 0 9 0 0 0
|
||||
10 0 11 0 12 0 13
|
||||
10 14 0 0 0 15 13
|
||||
10 14 16 0 17 15 13
|
||||
1 1 1 0 1 1 1
|
||||
1 1 0 0 0 1 1
|
||||
1 0 1 0 1 0 1
|
||||
0 0 0 1 0 0 0
|
||||
1 0 1 0 1 0 1
|
||||
1 1 0 0 0 1 1
|
||||
1 1 1 0 1 1 1
|
||||
1 1 2 0 3 3 3
|
||||
1 1 0 0 0 3 3
|
||||
1 0 1 0 4 0 3
|
||||
0 0 0 1 0 0 0
|
||||
5 0 6 0 1 0 1
|
||||
5 5 0 0 0 1 1
|
||||
5 5 5 0 7 1 1
|
||||
1 2 1 0 1 3 1
|
||||
2 1 0 0 0 1 3
|
||||
1 0 1 0 1 0 1
|
||||
0 0 0 1 0 0 0
|
||||
1 0 1 0 1 0 1
|
||||
4 1 0 0 0 1 5
|
||||
1 4 1 0 1 5 1
|
||||
1 2 3 0 4 5 6
|
||||
2 3 0 0 0 6 7
|
||||
3 0 8 0 6 0 9
|
||||
0 0 0 6 0 0 0
|
||||
10 0 6 0 11 0 12
|
||||
13 6 0 0 0 12 14
|
||||
6 15 16 0 12 14 17
|
||||
1 1 1 0 2 2 2
|
||||
1 1 0 0 0 2 2
|
||||
1 0 1 0 3 0 2
|
||||
0 0 0 1 0 0 0
|
||||
4 0 5 0 1 0 1
|
||||
4 4 0 0 0 1 1
|
||||
4 4 4 0 1 1 1
|
||||
1 0 2 2 2 0 3
|
||||
0 0 0 2 0 0 0
|
||||
4 0 0 5 0 0 5
|
||||
5 5 5 5 5 5 5
|
||||
5 0 0 5 0 0 6
|
||||
0 0 0 7 0 0 0
|
||||
8 0 7 7 7 0 9
|
||||
1 0 2 2 2 0 3
|
||||
0 0 0 2 0 0 0
|
||||
4 0 0 4 0 0 5
|
||||
4 4 4 4 4 4 4
|
||||
6 0 0 4 0 0 4
|
||||
0 0 0 7 0 0 0
|
||||
8 0 7 7 7 0 9
|
||||
1 0 2 2 2 0 3
|
||||
0 0 0 4 0 0 0
|
||||
5 0 0 6 0 0 7
|
||||
8 8 8 8 8 8 8
|
||||
9 0 0 10 0 0 11
|
||||
0 0 0 12 0 0 0
|
||||
13 0 14 14 14 0 15
|
||||
1 0 2 3 3 0 4
|
||||
0 0 0 3 0 0 0
|
||||
5 0 0 3 0 0 6
|
||||
5 5 3 3 3 6 6
|
||||
5 0 0 3 0 0 6
|
||||
0 0 0 3 0 0 0
|
||||
7 0 3 3 8 0 9
|
||||
1 0 2 3 4 0 5
|
||||
0 0 0 6 0 0 0
|
||||
7 0 0 8 0 0 9
|
||||
10 11 12 13 14 15 16
|
||||
17 0 0 18 0 0 19
|
||||
0 0 0 20 0 0 0
|
||||
21 0 22 23 24 0 25
|
||||
1 0 2 2 2 0 3
|
||||
0 0 0 2 0 0 0
|
||||
2 0 0 2 0 0 2
|
||||
2 2 2 2 2 2 2
|
||||
2 0 0 2 0 0 2
|
||||
0 0 0 2 0 0 0
|
||||
4 0 2 2 2 0 5
|
||||
1 0 2 2 2 0 3
|
||||
0 0 0 2 0 0 0
|
||||
2 0 0 2 0 0 2
|
||||
2 2 2 2 2 2 2
|
||||
2 0 0 2 0 0 2
|
||||
0 0 0 2 0 0 0
|
||||
4 0 2 2 2 0 5
|
||||
1 0 2 3 4 0 5
|
||||
0 0 0 2 0 0 0
|
||||
6 0 0 7 0 0 8
|
||||
9 6 10 11 7 12 13
|
||||
14 0 0 10 0 0 12
|
||||
0 0 0 15 0 0 0
|
||||
16 0 17 18 15 0 19
|
||||
1 0 2 3 4 0 5
|
||||
0 0 0 3 0 0 0
|
||||
6 0 0 3 0 0 7
|
||||
6 8 9 3 10 11 7
|
||||
6 0 0 3 0 0 7
|
||||
0 0 0 3 0 0 0
|
||||
12 0 13 3 14 0 15
|
||||
1 0 2 2 2 0 3
|
||||
0 0 0 2 0 0 0
|
||||
2 0 0 2 0 0 2
|
||||
2 2 2 2 2 2 2
|
||||
2 0 0 2 0 0 2
|
||||
0 0 0 2 0 0 0
|
||||
4 0 2 2 2 0 5
|
||||
1 0 2 2 3 0 4
|
||||
0 0 0 2 0 0 0
|
||||
5 0 0 2 0 0 6
|
||||
5 5 2 2 2 6 6
|
||||
5 0 0 2 0 0 6
|
||||
0 0 0 2 0 0 0
|
||||
7 0 8 2 2 0 9
|
||||
1 0 2 3 2 0 4
|
||||
0 0 0 2 0 0 0
|
||||
5 0 0 6 0 0 7
|
||||
8 5 6 9 6 7 10
|
||||
5 0 0 6 0 0 7
|
||||
0 0 0 11 0 0 0
|
||||
12 0 11 13 11 0 14
|
||||
1 0 2 3 4 0 5
|
||||
0 0 0 4 0 0 0
|
||||
6 0 0 7 0 0 8
|
||||
9 10 7 11 12 8 13
|
||||
10 0 0 12 0 0 14
|
||||
0 0 0 15 0 0 0
|
||||
16 0 15 17 18 0 19
|
||||
1 0 2 2 2 0 3
|
||||
0 0 0 2 0 0 0
|
||||
2 0 0 2 0 0 2
|
||||
2 2 2 2 2 2 2
|
||||
2 0 0 2 0 0 2
|
||||
0 0 0 2 0 0 0
|
||||
4 0 2 2 2 0 5
|
||||
@@ -0,0 +1,42 @@
|
||||
0 0 1
|
||||
1 1 1
|
||||
1 0 0
|
||||
1 0 0
|
||||
1 1 1
|
||||
0 0 1
|
||||
0 0 0
|
||||
1 1 1
|
||||
0 0 0
|
||||
0 1 1
|
||||
0 1 0
|
||||
1 1 0
|
||||
0 0 0
|
||||
0 0 0
|
||||
0 0 0
|
||||
0 1 1
|
||||
1 1 1
|
||||
1 1 0
|
||||
0 1 0
|
||||
1 1 1
|
||||
0 1 0
|
||||
1 0 0
|
||||
0 1 0
|
||||
0 0 1
|
||||
0 1 0
|
||||
0 1 0
|
||||
0 1 0
|
||||
1 1 1
|
||||
1 1 1
|
||||
1 1 1
|
||||
1 1 0
|
||||
0 1 0
|
||||
0 1 1
|
||||
1 0 1
|
||||
0 1 0
|
||||
1 0 1
|
||||
0 0 1
|
||||
0 1 0
|
||||
1 0 0
|
||||
1 1 0
|
||||
1 1 1
|
||||
0 1 1
|
||||
BIN
.venv/lib/python3.12/site-packages/scipy/ndimage/tests/dots.png
Normal file
BIN
.venv/lib/python3.12/site-packages/scipy/ndimage/tests/dots.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 2.1 KiB |
@@ -0,0 +1,102 @@
|
||||
import numpy as np
|
||||
from numpy.testing import assert_allclose
|
||||
|
||||
from scipy import ndimage
|
||||
from scipy.ndimage import _ctest
|
||||
from scipy.ndimage import _cytest
|
||||
from scipy._lib._ccallback import LowLevelCallable
|
||||
|
||||
FILTER1D_FUNCTIONS = [
|
||||
lambda filter_size: _ctest.filter1d(filter_size),
|
||||
lambda filter_size: _cytest.filter1d(filter_size, with_signature=False),
|
||||
lambda filter_size: LowLevelCallable(
|
||||
_cytest.filter1d(filter_size, with_signature=True)
|
||||
),
|
||||
lambda filter_size: LowLevelCallable.from_cython(
|
||||
_cytest, "_filter1d",
|
||||
_cytest.filter1d_capsule(filter_size),
|
||||
),
|
||||
]
|
||||
|
||||
FILTER2D_FUNCTIONS = [
|
||||
lambda weights: _ctest.filter2d(weights),
|
||||
lambda weights: _cytest.filter2d(weights, with_signature=False),
|
||||
lambda weights: LowLevelCallable(_cytest.filter2d(weights, with_signature=True)),
|
||||
lambda weights: LowLevelCallable.from_cython(_cytest,
|
||||
"_filter2d",
|
||||
_cytest.filter2d_capsule(weights),),
|
||||
]
|
||||
|
||||
TRANSFORM_FUNCTIONS = [
|
||||
lambda shift: _ctest.transform(shift),
|
||||
lambda shift: _cytest.transform(shift, with_signature=False),
|
||||
lambda shift: LowLevelCallable(_cytest.transform(shift, with_signature=True)),
|
||||
lambda shift: LowLevelCallable.from_cython(_cytest,
|
||||
"_transform",
|
||||
_cytest.transform_capsule(shift),),
|
||||
]
|
||||
|
||||
|
||||
def test_generic_filter():
|
||||
def filter2d(footprint_elements, weights):
|
||||
return (weights*footprint_elements).sum()
|
||||
|
||||
def check(j):
|
||||
func = FILTER2D_FUNCTIONS[j]
|
||||
|
||||
im = np.ones((20, 20))
|
||||
im[:10,:10] = 0
|
||||
footprint = np.array([[0, 1, 0], [1, 1, 1], [0, 1, 0]])
|
||||
footprint_size = np.count_nonzero(footprint)
|
||||
weights = np.ones(footprint_size)/footprint_size
|
||||
|
||||
res = ndimage.generic_filter(im, func(weights),
|
||||
footprint=footprint)
|
||||
std = ndimage.generic_filter(im, filter2d, footprint=footprint,
|
||||
extra_arguments=(weights,))
|
||||
assert_allclose(res, std, err_msg=f"#{j} failed")
|
||||
|
||||
for j, func in enumerate(FILTER2D_FUNCTIONS):
|
||||
check(j)
|
||||
|
||||
|
||||
def test_generic_filter1d():
|
||||
def filter1d(input_line, output_line, filter_size):
|
||||
for i in range(output_line.size):
|
||||
output_line[i] = 0
|
||||
for j in range(filter_size):
|
||||
output_line[i] += input_line[i+j]
|
||||
output_line /= filter_size
|
||||
|
||||
def check(j):
|
||||
func = FILTER1D_FUNCTIONS[j]
|
||||
|
||||
im = np.tile(np.hstack((np.zeros(10), np.ones(10))), (10, 1))
|
||||
filter_size = 3
|
||||
|
||||
res = ndimage.generic_filter1d(im, func(filter_size),
|
||||
filter_size)
|
||||
std = ndimage.generic_filter1d(im, filter1d, filter_size,
|
||||
extra_arguments=(filter_size,))
|
||||
assert_allclose(res, std, err_msg=f"#{j} failed")
|
||||
|
||||
for j, func in enumerate(FILTER1D_FUNCTIONS):
|
||||
check(j)
|
||||
|
||||
|
||||
def test_geometric_transform():
|
||||
def transform(output_coordinates, shift):
|
||||
return output_coordinates[0] - shift, output_coordinates[1] - shift
|
||||
|
||||
def check(j):
|
||||
func = TRANSFORM_FUNCTIONS[j]
|
||||
|
||||
im = np.arange(12).reshape(4, 3).astype(np.float64)
|
||||
shift = 0.5
|
||||
|
||||
res = ndimage.geometric_transform(im, func(shift))
|
||||
std = ndimage.geometric_transform(im, transform, extra_arguments=(shift,))
|
||||
assert_allclose(res, std, err_msg=f"#{j} failed")
|
||||
|
||||
for j, func in enumerate(TRANSFORM_FUNCTIONS):
|
||||
check(j)
|
||||
@@ -0,0 +1,66 @@
|
||||
""" Testing data types for ndimage calls
|
||||
"""
|
||||
import numpy as np
|
||||
from numpy.testing import assert_array_almost_equal, assert_
|
||||
import pytest
|
||||
|
||||
from scipy import ndimage
|
||||
|
||||
|
||||
def test_map_coordinates_dts():
|
||||
# check that ndimage accepts different data types for interpolation
|
||||
data = np.array([[4, 1, 3, 2],
|
||||
[7, 6, 8, 5],
|
||||
[3, 5, 3, 6]])
|
||||
shifted_data = np.array([[0, 0, 0, 0],
|
||||
[0, 4, 1, 3],
|
||||
[0, 7, 6, 8]])
|
||||
idx = np.indices(data.shape)
|
||||
dts = (np.uint8, np.uint16, np.uint32, np.uint64,
|
||||
np.int8, np.int16, np.int32, np.int64,
|
||||
np.intp, np.uintp, np.float32, np.float64)
|
||||
for order in range(0, 6):
|
||||
for data_dt in dts:
|
||||
these_data = data.astype(data_dt)
|
||||
for coord_dt in dts:
|
||||
# affine mapping
|
||||
mat = np.eye(2, dtype=coord_dt)
|
||||
off = np.zeros((2,), dtype=coord_dt)
|
||||
out = ndimage.affine_transform(these_data, mat, off)
|
||||
assert_array_almost_equal(these_data, out)
|
||||
# map coordinates
|
||||
coords_m1 = idx.astype(coord_dt) - 1
|
||||
coords_p10 = idx.astype(coord_dt) + 10
|
||||
out = ndimage.map_coordinates(these_data, coords_m1, order=order)
|
||||
assert_array_almost_equal(out, shifted_data)
|
||||
# check constant fill works
|
||||
out = ndimage.map_coordinates(these_data, coords_p10, order=order)
|
||||
assert_array_almost_equal(out, np.zeros((3,4)))
|
||||
# check shift and zoom
|
||||
out = ndimage.shift(these_data, 1)
|
||||
assert_array_almost_equal(out, shifted_data)
|
||||
out = ndimage.zoom(these_data, 1)
|
||||
assert_array_almost_equal(these_data, out)
|
||||
|
||||
|
||||
@pytest.mark.xfail(True, reason="Broken on many platforms")
|
||||
def test_uint64_max():
|
||||
# Test interpolation respects uint64 max. Reported to fail at least on
|
||||
# win32 (due to the 32 bit visual C compiler using signed int64 when
|
||||
# converting between uint64 to double) and Debian on s390x.
|
||||
# Interpolation is always done in double precision floating point, so
|
||||
# we use the largest uint64 value for which int(float(big)) still fits
|
||||
# in a uint64.
|
||||
# This test was last enabled on macOS only, and there it started failing
|
||||
# on arm64 as well (see gh-19117).
|
||||
big = 2**64 - 1025
|
||||
arr = np.array([big, big, big], dtype=np.uint64)
|
||||
# Tests geometric transform (map_coordinates, affine_transform)
|
||||
inds = np.indices(arr.shape) - 0.1
|
||||
x = ndimage.map_coordinates(arr, inds)
|
||||
assert_(x[1] == int(float(big)))
|
||||
assert_(x[2] == int(float(big)))
|
||||
# Tests zoom / shift
|
||||
x = ndimage.shift(arr, 0.1)
|
||||
assert_(x[1] == int(float(big)))
|
||||
assert_(x[2] == int(float(big)))
|
||||
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,137 @@
|
||||
import numpy as np
|
||||
from numpy import fft
|
||||
from numpy.testing import (assert_almost_equal, assert_array_almost_equal,
|
||||
assert_equal)
|
||||
|
||||
import pytest
|
||||
|
||||
from scipy import ndimage
|
||||
|
||||
|
||||
class TestNdimageFourier:
|
||||
|
||||
@pytest.mark.parametrize('shape', [(32, 16), (31, 15), (1, 10)])
|
||||
@pytest.mark.parametrize('dtype, dec', [(np.float32, 6), (np.float64, 14)])
|
||||
def test_fourier_gaussian_real01(self, shape, dtype, dec):
|
||||
a = np.zeros(shape, dtype)
|
||||
a[0, 0] = 1.0
|
||||
a = fft.rfft(a, shape[0], 0)
|
||||
a = fft.fft(a, shape[1], 1)
|
||||
a = ndimage.fourier_gaussian(a, [5.0, 2.5], shape[0], 0)
|
||||
a = fft.ifft(a, shape[1], 1)
|
||||
a = fft.irfft(a, shape[0], 0)
|
||||
assert_almost_equal(ndimage.sum(a), 1, decimal=dec)
|
||||
|
||||
@pytest.mark.parametrize('shape', [(32, 16), (31, 15)])
|
||||
@pytest.mark.parametrize('dtype, dec', [(np.complex64, 6), (np.complex128, 14)])
|
||||
def test_fourier_gaussian_complex01(self, shape, dtype, dec):
|
||||
a = np.zeros(shape, dtype)
|
||||
a[0, 0] = 1.0
|
||||
a = fft.fft(a, shape[0], 0)
|
||||
a = fft.fft(a, shape[1], 1)
|
||||
a = ndimage.fourier_gaussian(a, [5.0, 2.5], -1, 0)
|
||||
a = fft.ifft(a, shape[1], 1)
|
||||
a = fft.ifft(a, shape[0], 0)
|
||||
assert_almost_equal(ndimage.sum(a.real), 1.0, decimal=dec)
|
||||
|
||||
@pytest.mark.parametrize('shape', [(32, 16), (31, 15), (1, 10)])
|
||||
@pytest.mark.parametrize('dtype, dec', [(np.float32, 6), (np.float64, 14)])
|
||||
def test_fourier_uniform_real01(self, shape, dtype, dec):
|
||||
a = np.zeros(shape, dtype)
|
||||
a[0, 0] = 1.0
|
||||
a = fft.rfft(a, shape[0], 0)
|
||||
a = fft.fft(a, shape[1], 1)
|
||||
a = ndimage.fourier_uniform(a, [5.0, 2.5], shape[0], 0)
|
||||
a = fft.ifft(a, shape[1], 1)
|
||||
a = fft.irfft(a, shape[0], 0)
|
||||
assert_almost_equal(ndimage.sum(a), 1.0, decimal=dec)
|
||||
|
||||
@pytest.mark.parametrize('shape', [(32, 16), (31, 15)])
|
||||
@pytest.mark.parametrize('dtype, dec', [(np.complex64, 6), (np.complex128, 14)])
|
||||
def test_fourier_uniform_complex01(self, shape, dtype, dec):
|
||||
a = np.zeros(shape, dtype)
|
||||
a[0, 0] = 1.0
|
||||
a = fft.fft(a, shape[0], 0)
|
||||
a = fft.fft(a, shape[1], 1)
|
||||
a = ndimage.fourier_uniform(a, [5.0, 2.5], -1, 0)
|
||||
a = fft.ifft(a, shape[1], 1)
|
||||
a = fft.ifft(a, shape[0], 0)
|
||||
assert_almost_equal(ndimage.sum(a.real), 1.0, decimal=dec)
|
||||
|
||||
@pytest.mark.parametrize('shape', [(32, 16), (31, 15)])
|
||||
@pytest.mark.parametrize('dtype, dec', [(np.float32, 4), (np.float64, 11)])
|
||||
def test_fourier_shift_real01(self, shape, dtype, dec):
|
||||
expected = np.arange(shape[0] * shape[1], dtype=dtype)
|
||||
expected.shape = shape
|
||||
a = fft.rfft(expected, shape[0], 0)
|
||||
a = fft.fft(a, shape[1], 1)
|
||||
a = ndimage.fourier_shift(a, [1, 1], shape[0], 0)
|
||||
a = fft.ifft(a, shape[1], 1)
|
||||
a = fft.irfft(a, shape[0], 0)
|
||||
assert_array_almost_equal(a[1:, 1:], expected[:-1, :-1], decimal=dec)
|
||||
assert_array_almost_equal(a.imag, np.zeros(shape), decimal=dec)
|
||||
|
||||
@pytest.mark.parametrize('shape', [(32, 16), (31, 15)])
|
||||
@pytest.mark.parametrize('dtype, dec', [(np.complex64, 4), (np.complex128, 11)])
|
||||
def test_fourier_shift_complex01(self, shape, dtype, dec):
|
||||
expected = np.arange(shape[0] * shape[1], dtype=dtype)
|
||||
expected.shape = shape
|
||||
a = fft.fft(expected, shape[0], 0)
|
||||
a = fft.fft(a, shape[1], 1)
|
||||
a = ndimage.fourier_shift(a, [1, 1], -1, 0)
|
||||
a = fft.ifft(a, shape[1], 1)
|
||||
a = fft.ifft(a, shape[0], 0)
|
||||
assert_array_almost_equal(a.real[1:, 1:], expected[:-1, :-1], decimal=dec)
|
||||
assert_array_almost_equal(a.imag, np.zeros(shape), decimal=dec)
|
||||
|
||||
@pytest.mark.parametrize('shape', [(32, 16), (31, 15), (1, 10)])
|
||||
@pytest.mark.parametrize('dtype, dec', [(np.float32, 5), (np.float64, 14)])
|
||||
def test_fourier_ellipsoid_real01(self, shape, dtype, dec):
|
||||
a = np.zeros(shape, dtype)
|
||||
a[0, 0] = 1.0
|
||||
a = fft.rfft(a, shape[0], 0)
|
||||
a = fft.fft(a, shape[1], 1)
|
||||
a = ndimage.fourier_ellipsoid(a, [5.0, 2.5],
|
||||
shape[0], 0)
|
||||
a = fft.ifft(a, shape[1], 1)
|
||||
a = fft.irfft(a, shape[0], 0)
|
||||
assert_almost_equal(ndimage.sum(a), 1.0, decimal=dec)
|
||||
|
||||
@pytest.mark.parametrize('shape', [(32, 16), (31, 15)])
|
||||
@pytest.mark.parametrize('dtype, dec', [(np.complex64, 5), (np.complex128, 14)])
|
||||
def test_fourier_ellipsoid_complex01(self, shape, dtype, dec):
|
||||
a = np.zeros(shape, dtype)
|
||||
a[0, 0] = 1.0
|
||||
a = fft.fft(a, shape[0], 0)
|
||||
a = fft.fft(a, shape[1], 1)
|
||||
a = ndimage.fourier_ellipsoid(a, [5.0, 2.5], -1, 0)
|
||||
a = fft.ifft(a, shape[1], 1)
|
||||
a = fft.ifft(a, shape[0], 0)
|
||||
assert_almost_equal(ndimage.sum(a.real), 1.0, decimal=dec)
|
||||
|
||||
def test_fourier_ellipsoid_unimplemented_ndim(self):
|
||||
# arrays with ndim > 3 raise NotImplementedError
|
||||
x = np.ones((4, 6, 8, 10), dtype=np.complex128)
|
||||
with pytest.raises(NotImplementedError):
|
||||
ndimage.fourier_ellipsoid(x, 3)
|
||||
|
||||
def test_fourier_ellipsoid_1d_complex(self):
|
||||
# expected result of 1d ellipsoid is the same as for fourier_uniform
|
||||
for shape in [(32, ), (31, )]:
|
||||
for type_, dec in zip([np.complex64, np.complex128], [5, 14]):
|
||||
x = np.ones(shape, dtype=type_)
|
||||
a = ndimage.fourier_ellipsoid(x, 5, -1, 0)
|
||||
b = ndimage.fourier_uniform(x, 5, -1, 0)
|
||||
assert_array_almost_equal(a, b, decimal=dec)
|
||||
|
||||
@pytest.mark.parametrize('shape', [(0, ), (0, 10), (10, 0)])
|
||||
@pytest.mark.parametrize('dtype', [np.float32, np.float64,
|
||||
np.complex64, np.complex128])
|
||||
@pytest.mark.parametrize('test_func',
|
||||
[ndimage.fourier_ellipsoid,
|
||||
ndimage.fourier_gaussian,
|
||||
ndimage.fourier_uniform])
|
||||
def test_fourier_zero_length_dims(self, shape, dtype, test_func):
|
||||
a = np.ones(shape, dtype)
|
||||
b = test_func(a, 3)
|
||||
assert_equal(a, b)
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@@ -0,0 +1,77 @@
|
||||
import pytest
|
||||
|
||||
import numpy as np
|
||||
from .._ni_support import _get_output
|
||||
|
||||
|
||||
@pytest.mark.parametrize(
|
||||
'dtype',
|
||||
[
|
||||
# String specifiers
|
||||
'f4', 'float32', 'complex64', 'complex128',
|
||||
# Type and dtype specifiers
|
||||
np.float32, float, np.dtype('f4'),
|
||||
# Derive from input
|
||||
None,
|
||||
],
|
||||
)
|
||||
def test_get_output_basic(dtype):
|
||||
shape = (2, 3)
|
||||
|
||||
input_ = np.zeros(shape, 'float32')
|
||||
|
||||
# For None, derive dtype from input
|
||||
expected_dtype = 'float32' if dtype is None else dtype
|
||||
|
||||
# Output is dtype-specifier, retrieve shape from input
|
||||
result = _get_output(dtype, input_)
|
||||
assert result.shape == shape
|
||||
assert result.dtype == np.dtype(expected_dtype)
|
||||
|
||||
# Output is dtype specifier, with explicit shape, overriding input
|
||||
result = _get_output(dtype, input_, shape=(3, 2))
|
||||
assert result.shape == (3, 2)
|
||||
assert result.dtype == np.dtype(expected_dtype)
|
||||
|
||||
# Output is pre-allocated array, return directly
|
||||
output = np.zeros(shape, dtype)
|
||||
result = _get_output(output, input_)
|
||||
assert result is output
|
||||
|
||||
|
||||
def test_get_output_complex():
|
||||
shape = (2, 3)
|
||||
|
||||
input_ = np.zeros(shape)
|
||||
|
||||
# None, promote input type to complex
|
||||
result = _get_output(None, input_, complex_output=True)
|
||||
assert result.shape == shape
|
||||
assert result.dtype == np.dtype('complex128')
|
||||
|
||||
# Explicit type, promote type to complex
|
||||
with pytest.warns(UserWarning, match='promoting specified output dtype to complex'):
|
||||
result = _get_output(float, input_, complex_output=True)
|
||||
assert result.shape == shape
|
||||
assert result.dtype == np.dtype('complex128')
|
||||
|
||||
# String specifier, simply verify complex output
|
||||
result = _get_output('complex64', input_, complex_output=True)
|
||||
assert result.shape == shape
|
||||
assert result.dtype == np.dtype('complex64')
|
||||
|
||||
|
||||
def test_get_output_error_cases():
|
||||
input_ = np.zeros((2, 3), 'float32')
|
||||
|
||||
# Two separate paths can raise the same error
|
||||
with pytest.raises(RuntimeError, match='output must have complex dtype'):
|
||||
_get_output('float32', input_, complex_output=True)
|
||||
with pytest.raises(RuntimeError, match='output must have complex dtype'):
|
||||
_get_output(np.zeros((2, 3)), input_, complex_output=True)
|
||||
|
||||
with pytest.raises(RuntimeError, match='output must have numeric dtype'):
|
||||
_get_output('void', input_)
|
||||
|
||||
with pytest.raises(RuntimeError, match='shape not correct'):
|
||||
_get_output(np.zeros((3, 2)), input_)
|
||||
@@ -0,0 +1,65 @@
|
||||
"""Tests for spline filtering."""
|
||||
import numpy as np
|
||||
import pytest
|
||||
|
||||
from numpy.testing import assert_almost_equal
|
||||
|
||||
from scipy import ndimage
|
||||
|
||||
|
||||
def get_spline_knot_values(order):
|
||||
"""Knot values to the right of a B-spline's center."""
|
||||
knot_values = {0: [1],
|
||||
1: [1],
|
||||
2: [6, 1],
|
||||
3: [4, 1],
|
||||
4: [230, 76, 1],
|
||||
5: [66, 26, 1]}
|
||||
|
||||
return knot_values[order]
|
||||
|
||||
|
||||
def make_spline_knot_matrix(n, order, mode='mirror'):
|
||||
"""Matrix to invert to find the spline coefficients."""
|
||||
knot_values = get_spline_knot_values(order)
|
||||
|
||||
matrix = np.zeros((n, n))
|
||||
for diag, knot_value in enumerate(knot_values):
|
||||
indices = np.arange(diag, n)
|
||||
if diag == 0:
|
||||
matrix[indices, indices] = knot_value
|
||||
else:
|
||||
matrix[indices, indices - diag] = knot_value
|
||||
matrix[indices - diag, indices] = knot_value
|
||||
|
||||
knot_values_sum = knot_values[0] + 2 * sum(knot_values[1:])
|
||||
|
||||
if mode == 'mirror':
|
||||
start, step = 1, 1
|
||||
elif mode == 'reflect':
|
||||
start, step = 0, 1
|
||||
elif mode == 'grid-wrap':
|
||||
start, step = -1, -1
|
||||
else:
|
||||
raise ValueError(f'unsupported mode {mode}')
|
||||
|
||||
for row in range(len(knot_values) - 1):
|
||||
for idx, knot_value in enumerate(knot_values[row + 1:]):
|
||||
matrix[row, start + step*idx] += knot_value
|
||||
matrix[-row - 1, -start - 1 - step*idx] += knot_value
|
||||
|
||||
return matrix / knot_values_sum
|
||||
|
||||
|
||||
@pytest.mark.parametrize('order', [0, 1, 2, 3, 4, 5])
|
||||
@pytest.mark.parametrize('mode', ['mirror', 'grid-wrap', 'reflect'])
|
||||
def test_spline_filter_vs_matrix_solution(order, mode):
|
||||
n = 100
|
||||
eye = np.eye(n, dtype=float)
|
||||
spline_filter_axis_0 = ndimage.spline_filter1d(eye, axis=0, order=order,
|
||||
mode=mode)
|
||||
spline_filter_axis_1 = ndimage.spline_filter1d(eye, axis=1, order=order,
|
||||
mode=mode)
|
||||
matrix = make_spline_knot_matrix(n, order, mode=mode)
|
||||
assert_almost_equal(eye, np.dot(spline_filter_axis_0, matrix))
|
||||
assert_almost_equal(eye, np.dot(spline_filter_axis_1, matrix.T))
|
||||
Reference in New Issue
Block a user