torchio.transforms.transform.Transform.parse_range() - Code Metrics - Inspection of "Add support to pass parameters by axis" - fepegar/torchio - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#346)

by Fernando

created 2020-11-04 16:42 UTC

Transform.parse_range() F

↳ Parent: torchio.transforms.transform

Complexity

Conditions

Size

Total Lines	104
Code Lines	50

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	21
eloc	50
nop	5
dl	0
loc	104
rs	0
c	0
b	0
f	0

How to fix Long Method Complexity

import copy
import numbers
import warnings
from abc import ABC, abstractmethod
from typing import Optional, Union, Tuple, List

import torch
import numpy as np
import nibabel as nib
import SimpleITK as sitk

from .. import TypeData, DATA, AFFINE, TypeNumber
from ..data.subject import Subject
from ..data.image import Image, ScalarImage
from ..utils import nib_to_sitk, sitk_to_nib, to_tuple
from .interpolation import Interpolation


TypeTransformInput = Union[Subject, torch.Tensor, np.ndarray, dict, sitk.Image]


class Transform(ABC):
    """Abstract class for all TorchIO transforms.

    All subclasses should overwrite
    :py:meth:`torchio.tranforms.Transform.apply_transform`,
    which takes data, applies some transformation and returns the result.

    The input can be an instance of
    :py:class:`torchio.Subject`,
    :py:class:`torchio.Image`,
    :py:class:`numpy.ndarray`,
    :py:class:`torch.Tensor`,
    :py:class:`SimpleITK.image`,
    or a Python dictionary.

    Args:
        p: Probability that this transform will be applied.
        copy: Make a shallow copy of the input before applying the transform.
        keys: Mandatory if the input is a Python dictionary. The transform will
            be applied only to the data in each key.
    """
    def __init__(
            self,
            p: float = 1,
            copy: bool = True,
            keys: Optional[List[str]] = None,
            ):
        self.probability = self.parse_probability(p)
        self.copy = copy
        self.keys = keys
        self.default_image_name = 'default_image_name'

    def __call__(self, data: TypeTransformInput) -> TypeTransformInput:
        """Transform data and return a result of the same type.

        Args:
            data: Instance of :py:class:`~torchio.Subject`, 4D
                :py:class:`torch.Tensor` or 4D NumPy array with dimensions
                :math:`(C, W, H, D)`, where :math:`C` is the number of channels
                and :math:`W, H, D` are the spatial dimensions. If the input is
                a tensor, the affine matrix is an identity and a tensor will be
                also returned.
        """
        if torch.rand(1).item() > self.probability:
            return data

        is_tensor = is_array = is_dict = is_image = is_sitk = is_nib = False

        if isinstance(data, nib.Nifti1Image):
            tensor = data.get_fdata(dtype=np.float32)
            data = ScalarImage(tensor=tensor, affine=data.affine)
            subject = self._get_subject_from_image(data)
            is_nib = True
        elif isinstance(data, (np.ndarray, torch.Tensor)):
            subject = self.parse_tensor(data)
            is_array = isinstance(data, np.ndarray)
            is_tensor = True
        elif isinstance(data, Image):
            subject = self._get_subject_from_image(data)
            is_image = True
        elif isinstance(data, Subject):
            subject = data
        elif isinstance(data, sitk.Image):
            subject = self._get_subject_from_sitk_image(data)
            is_sitk = True
        elif isinstance(data, dict):  # e.g. Eisen or MONAI dicts
            if self.keys is None:
                message = (
                    'If input is a dictionary, a value for "keys" must be'
                    ' specified when instantiating the transform'
                )
                raise RuntimeError(message)
            subject = self._get_subject_from_dict(data, self.keys)
            is_dict = True
        else:
            raise ValueError(f'Input type not recognized: {type(data)}')
        self.parse_subject(subject)

        if self.copy:
            subject = copy.copy(subject)

        with np.errstate(all='raise'):
            transformed = self.apply_transform(subject)

        for image in transformed.get_images(intensity_only=False):
            ndim = image[DATA].ndim
            assert ndim == 4, f'Output of {self.name} is {ndim}D'

        if is_tensor or is_sitk:
            image = transformed[self.default_image_name]
            transformed = image[DATA]
            if is_array:
                transformed = transformed.numpy()
            elif is_sitk:
                transformed = nib_to_sitk(image[DATA], image[AFFINE])
        elif is_image:
            transformed = transformed[self.default_image_name]
        elif is_dict:
            transformed = dict(transformed)
            for key, value in transformed.items():
                if isinstance(value, Image):
                    transformed[key] = value.data
        elif is_nib:
            image = transformed[self.default_image_name]
            data = image[DATA]
            if len(data) > 1:
                message = (
                    'Multichannel images not supported for input of type'
                    ' nibabel.nifti.Nifti1Image'
                )
                raise RuntimeError(message)
            transformed = nib.Nifti1Image(data[0].numpy(), image[AFFINE])
        return transformed

    @abstractmethod
    def apply_transform(self, subject: Subject):
        raise NotImplementedError

    @staticmethod
    def to_range(n, around):
        if around is None:
            return 0, n
        else:
            return around - n, around + n

    def parse_params(self, params, around, name, **kwargs):
        params = to_tuple(params)
        if len(params) == 1 or len(params) == 2:  # d or (a, b)
            params *= 3  # (d, d, d) or (a, b, a, b, a, b)
        if len(params) == 3:  # (a, b, c)
            items = [self.to_range(n, around) for n in params]
            # (-a, a, -b, b, -c, c) or (1-a, 1+a, 1-b, 1+b, 1-c, 1+c)
            params = [n for prange in items for n in prange]
        if len(params) != 6:
            message = (
                f'If "{name}" is a sequence, it must have length 2, 3 or 6,'
                f' not {len(params)}'
            )
            raise ValueError(message)
        for param_range in zip(params[::2], params[1::2]):
            self.parse_range(param_range, name, **kwargs)
        return tuple(params)

    @staticmethod
    def parse_range(
            nums_range: Union[TypeNumber, Tuple[TypeNumber, TypeNumber]],
            name: str,
            min_constraint: TypeNumber = None,
            max_constraint: TypeNumber = None,
            type_constraint: type = None,
            ) -> Tuple[TypeNumber, TypeNumber]:
        r"""Adapted from ``torchvision.transforms.RandomRotation``.

        Args:
            nums_range: Tuple of two numbers :math:`(n_{min}, n_{max})`,
                where :math:`n_{min} \leq n_{max}`.
                If a single positive number :math:`n` is provided,
                :math:`n_{min} = -n` and :math:`n_{max} = n`.
            name: Name of the parameter, so that an informative error message
                can be printed.
            min_constraint: Minimal value that :math:`n_{min}` can take,
                default is None, i.e. there is no minimal value.
            max_constraint: Maximal value that :math:`n_{max}` can take,
                default is None, i.e. there is no maximal value.
            type_constraint: Precise type that :math:`n_{max}` and
                :math:`n_{min}` must take.

        Returns:
            A tuple of two numbers :math:`(n_{min}, n_{max})`.

        Raises:
            ValueError: if :attr:`nums_range` is negative
            ValueError: if :math:`n_{max}` or :math:`n_{min}` is not a number
            ValueError: if :math:`n_{max} \lt n_{min}`
            ValueError: if :attr:`min_constraint` is not None and
                :math:`n_{min}` is smaller than :attr:`min_constraint`
            ValueError: if :attr:`max_constraint` is not None and
                :math:`n_{max}` is greater than :attr:`max_constraint`
            ValueError: if :attr:`type_constraint` is not None and
                :math:`n_{max}` and :math:`n_{max}` are not of type
                :attr:`type_constraint`.
        """
        if isinstance(nums_range, numbers.Number):  # single number given
            if nums_range < 0:
                raise ValueError(
                    f'If {name} is a single number,'
                    f' it must be positive, not {nums_range}')
            if min_constraint is not None and nums_range < min_constraint:
                raise ValueError(
                    f'If {name} is a single number, it must be greater'
                    f' than {min_constraint}, not {nums_range}'
                )
            if max_constraint is not None and nums_range > max_constraint:
                raise ValueError(
                    f'If {name} is a single number, it must be smaller'
                    f' than {max_constraint}, not {nums_range}'
                )
            if type_constraint is not None:
                if not isinstance(nums_range, type_constraint):
                    raise ValueError(
                        f'If {name} is a single number, it must be of'
                        f' type {type_constraint}, not {nums_range}'
                    )
            min_range = -nums_range if min_constraint is None else nums_range
            return (min_range, nums_range)

        try:
            min_value, max_value = nums_range
        except (TypeError, ValueError):
            raise ValueError(
                f'If {name} is not a single number, it must be'
                f' a sequence of len 2, not {nums_range}'
            )

        min_is_number = isinstance(min_value, numbers.Number)
        max_is_number = isinstance(max_value, numbers.Number)
        if not min_is_number or not max_is_number:
            message = (
                f'{name} values must be numbers, not {nums_range}')
            raise ValueError(message)

        if min_value > max_value:
            raise ValueError(
                f'If {name} is a sequence, the second value must be'
                f' equal or greater than the first, but it is {nums_range}')

        if min_constraint is not None and min_value < min_constraint:
            raise ValueError(
                f'If {name} is a sequence, the first value must be greater'
                f' than {min_constraint}, but it is {min_value}'
            )

        if max_constraint is not None and max_value > max_constraint:
            raise ValueError(
                f'If {name} is a sequence, the second value must be smaller'
                f' than {max_constraint}, but it is {max_value}'
            )

        if type_constraint is not None:
            min_type_ok = isinstance(min_value, type_constraint)
            max_type_ok = isinstance(max_value, type_constraint)
            if not min_type_ok or not max_type_ok:
                raise ValueError(
                    f'If "{name}" is a sequence, its values must be of'
                    f' type "{type_constraint}", not "{type(nums_range)}"'
                )
        return nums_range

    @staticmethod
    def parse_probability(probability: float) -> float:
        is_number = isinstance(probability, numbers.Number)
        if not (is_number and 0 <= probability <= 1):
            message = (
                'Probability must be a number in [0, 1],'
                f' not {probability}'
            )
            raise ValueError(message)
        return probability

    @staticmethod
    def parse_subject(subject: Subject) -> None:
        if not isinstance(subject, Subject):
            message = (
                'Input to a transform must be a tensor or an instance'
                f' of torchio.Subject, not "{type(subject)}"'
            )
            raise RuntimeError(message)

    def parse_tensor(self, data: TypeData) -> Subject:
        if data.ndim != 4:
            message = (
                'The input must be a 4D tensor with dimensions'
                f' (channels, x, y, z) but it has shape {tuple(data.shape)}'
            )
            raise ValueError(message)
        return self._get_subject_from_tensor(data)

    @staticmethod
    def parse_interpolation(interpolation: str) -> Interpolation:
        if isinstance(interpolation, Interpolation):
            message = (
                'Interpolation of type torchio.Interpolation'
                ' is deprecated, please use a string instead'
            )
            warnings.warn(message, FutureWarning)
        elif isinstance(interpolation, str):
            interpolation = interpolation.lower()
            supported_values = [key.name.lower() for key in Interpolation]
            if interpolation in supported_values:
                interpolation = getattr(Interpolation, interpolation.upper())
            else:
                message = (
                    f'Interpolation "{interpolation}" is not among'
                    f' the supported values: {supported_values}'
                )
                raise AttributeError(message)
        else:
            message = (
                'image_interpolation must be a string,'
                f' not {type(interpolation)}'
            )
            raise TypeError(message)
        return interpolation

    def _get_subject_from_tensor(self, tensor: torch.Tensor) -> Subject:
        image = ScalarImage(tensor=tensor)
        return self._get_subject_from_image(image)

    def _get_subject_from_image(self, image: Image) -> Subject:
        subject = Subject({self.default_image_name: image})
        return subject

    @staticmethod
    def _get_subject_from_dict(
            data: dict,
            image_keys: List[str],
            ) -> Subject:
        subject_dict = {}
        for key, value in data.items():
            if key in image_keys:
                value = ScalarImage(tensor=value)
            subject_dict[key] = value
        return Subject(subject_dict)

    def _get_subject_from_sitk_image(self, image):
        tensor, affine = sitk_to_nib(image)
        image = ScalarImage(tensor=tensor, affine=affine)
        return self._get_subject_from_image(image)

    @staticmethod
    def nib_to_sitk(data: TypeData, affine: TypeData) -> sitk.Image:
        return nib_to_sitk(data, affine)

    @staticmethod
    def sitk_to_nib(image: sitk.Image) -> Tuple[torch.Tensor, np.ndarray]:
        return sitk_to_nib(image)

    @property
    def name(self):
        return self.__class__.__name__


1			import copy
2			import numbers
3			import warnings
4			from abc import ABC, abstractmethod
5			from typing import Optional, Union, Tuple, List
6
7			import torch
8			import numpy as np
9			import nibabel as nib
10			import SimpleITK as sitk
11
12			from .. import TypeData, DATA, AFFINE, TypeNumber
13			from ..data.subject import Subject
14			from ..data.image import Image, ScalarImage
15			from ..utils import nib_to_sitk, sitk_to_nib, to_tuple
16			from .interpolation import Interpolation
17
18
19			TypeTransformInput = Union[Subject, torch.Tensor, np.ndarray, dict, sitk.Image]
20
21
22			class Transform(ABC):
23			"""Abstract class for all TorchIO transforms.
24
25			All subclasses should overwrite
26			:py:meth:`torchio.tranforms.Transform.apply_transform`,
27			which takes data, applies some transformation and returns the result.
28
29			The input can be an instance of
30			:py:class:`torchio.Subject`,
31			:py:class:`torchio.Image`,
32			:py:class:`numpy.ndarray`,
33			:py:class:`torch.Tensor`,
34			:py:class:`SimpleITK.image`,
35			or a Python dictionary.
36
37			Args:
38			p: Probability that this transform will be applied.
39			copy: Make a shallow copy of the input before applying the transform.
40			keys: Mandatory if the input is a Python dictionary. The transform will
41			be applied only to the data in each key.
42			"""
43			def __init__(
44			self,
45			p: float = 1,
46			copy: bool = True,
47			keys: Optional[List[str]] = None,
48			):
49			self.probability = self.parse_probability(p)
50			self.copy = copy
51			self.keys = keys
52			self.default_image_name = 'default_image_name'
53
54			def __call__(self, data: TypeTransformInput) -> TypeTransformInput:
55			"""Transform data and return a result of the same type.
56
57			Args:
58			data: Instance of :py:class:`~torchio.Subject`, 4D
59			:py:class:`torch.Tensor` or 4D NumPy array with dimensions
60			:math:`(C, W, H, D)`, where :math:`C` is the number of channels
61			and :math:`W, H, D` are the spatial dimensions. If the input is
62			a tensor, the affine matrix is an identity and a tensor will be
63			also returned.
64			"""
65			if torch.rand(1).item() > self.probability:
66			return data
67
68			is_tensor = is_array = is_dict = is_image = is_sitk = is_nib = False
69
70			if isinstance(data, nib.Nifti1Image):
71			tensor = data.get_fdata(dtype=np.float32)
72			data = ScalarImage(tensor=tensor, affine=data.affine)
73			subject = self._get_subject_from_image(data)
74			is_nib = True
75			elif isinstance(data, (np.ndarray, torch.Tensor)):
76			subject = self.parse_tensor(data)
77			is_array = isinstance(data, np.ndarray)
78			is_tensor = True
79			elif isinstance(data, Image):
80			subject = self._get_subject_from_image(data)
81			is_image = True
82			elif isinstance(data, Subject):
83			subject = data
84			elif isinstance(data, sitk.Image):
85			subject = self._get_subject_from_sitk_image(data)
86			is_sitk = True
87			elif isinstance(data, dict): # e.g. Eisen or MONAI dicts
88			if self.keys is None:
89			message = (
90			'If input is a dictionary, a value for "keys" must be'
91			' specified when instantiating the transform'
92			)
93			raise RuntimeError(message)
94			subject = self._get_subject_from_dict(data, self.keys)
95			is_dict = True
96			else:
97			raise ValueError(f'Input type not recognized: {type(data)}')
98			self.parse_subject(subject)
99
100			if self.copy:
101			subject = copy.copy(subject)
102
103			with np.errstate(all='raise'):
104			transformed = self.apply_transform(subject)
105
106			for image in transformed.get_images(intensity_only=False):
107			ndim = image[DATA].ndim
108			assert ndim == 4, f'Output of {self.name} is {ndim}D'
109
110			if is_tensor or is_sitk:
111			image = transformed[self.default_image_name]
112			transformed = image[DATA]
113			if is_array:
114			transformed = transformed.numpy()
115			elif is_sitk:
116			transformed = nib_to_sitk(image[DATA], image[AFFINE])
117			elif is_image:
118			transformed = transformed[self.default_image_name]
119			elif is_dict:
120			transformed = dict(transformed)
121			for key, value in transformed.items():
122			if isinstance(value, Image):
123			transformed[key] = value.data
124			elif is_nib:
125			image = transformed[self.default_image_name]
126			data = image[DATA]
127			if len(data) > 1:
128			message = (
129			'Multichannel images not supported for input of type'
130			' nibabel.nifti.Nifti1Image'
131			)
132			raise RuntimeError(message)
133			transformed = nib.Nifti1Image(data[0].numpy(), image[AFFINE])
134			return transformed
135
136			@abstractmethod
137			def apply_transform(self, subject: Subject):
138			raise NotImplementedError
139
140			@staticmethod
141			def to_range(n, around):
142			if around is None:
143			return 0, n
144			else:
145			return around - n, around + n
146
147			def parse_params(self, params, around, name, **kwargs):
148			params = to_tuple(params)
149			if len(params) == 1 or len(params) == 2: # d or (a, b)
150			params *= 3 # (d, d, d) or (a, b, a, b, a, b)
151			if len(params) == 3: # (a, b, c)
152			items = [self.to_range(n, around) for n in params]
153			# (-a, a, -b, b, -c, c) or (1-a, 1+a, 1-b, 1+b, 1-c, 1+c)
154			params = [n for prange in items for n in prange]
155			if len(params) != 6:
156			message = (
157			f'If "{name}" is a sequence, it must have length 2, 3 or 6,'
158			f' not {len(params)}'
159			)
160			raise ValueError(message)
161			for param_range in zip(params[::2], params[1::2]):
162			self.parse_range(param_range, name, **kwargs)
163			return tuple(params)
164
165			@staticmethod
166			def parse_range(
167			nums_range: Union[TypeNumber, Tuple[TypeNumber, TypeNumber]],
168			name: str,
169			min_constraint: TypeNumber = None,
170			max_constraint: TypeNumber = None,
171			type_constraint: type = None,
172			) -> Tuple[TypeNumber, TypeNumber]:
173			r"""Adapted from ``torchvision.transforms.RandomRotation``.
174
175			Args:
176			nums_range: Tuple of two numbers :math:`(n_{min}, n_{max})`,
177			where :math:`n_{min} \leq n_{max}`.
178			If a single positive number :math:`n` is provided,
179			:math:`n_{min} = -n` and :math:`n_{max} = n`.
180			name: Name of the parameter, so that an informative error message
181			can be printed.
182			min_constraint: Minimal value that :math:`n_{min}` can take,
183			default is None, i.e. there is no minimal value.
184			max_constraint: Maximal value that :math:`n_{max}` can take,
185			default is None, i.e. there is no maximal value.
186			type_constraint: Precise type that :math:`n_{max}` and
187			:math:`n_{min}` must take.
188
189			Returns:
190			A tuple of two numbers :math:`(n_{min}, n_{max})`.
191
192			Raises:
193			ValueError: if :attr:`nums_range` is negative
194			ValueError: if :math:`n_{max}` or :math:`n_{min}` is not a number
195			ValueError: if :math:`n_{max} \lt n_{min}`
196			ValueError: if :attr:`min_constraint` is not None and
197			:math:`n_{min}` is smaller than :attr:`min_constraint`
198			ValueError: if :attr:`max_constraint` is not None and
199			:math:`n_{max}` is greater than :attr:`max_constraint`
200			ValueError: if :attr:`type_constraint` is not None and
201			:math:`n_{max}` and :math:`n_{max}` are not of type
202			:attr:`type_constraint`.
203			"""
204			if isinstance(nums_range, numbers.Number): # single number given
205			if nums_range < 0:
206			raise ValueError(
207			f'If {name} is a single number,'
208			f' it must be positive, not {nums_range}')
209			if min_constraint is not None and nums_range < min_constraint:
210			raise ValueError(
211			f'If {name} is a single number, it must be greater'
212			f' than {min_constraint}, not {nums_range}'
213			)
214			if max_constraint is not None and nums_range > max_constraint:
215			raise ValueError(
216			f'If {name} is a single number, it must be smaller'
217			f' than {max_constraint}, not {nums_range}'
218			)
219			if type_constraint is not None:
220			if not isinstance(nums_range, type_constraint):
221			raise ValueError(
222			f'If {name} is a single number, it must be of'
223			f' type {type_constraint}, not {nums_range}'
224			)
225			min_range = -nums_range if min_constraint is None else nums_range
226			return (min_range, nums_range)
227
228			try:
229			min_value, max_value = nums_range
230			except (TypeError, ValueError):
231			raise ValueError(
232			f'If {name} is not a single number, it must be'
233			f' a sequence of len 2, not {nums_range}'
234			)
235
236			min_is_number = isinstance(min_value, numbers.Number)
237			max_is_number = isinstance(max_value, numbers.Number)
238			if not min_is_number or not max_is_number:
239			message = (
240			f'{name} values must be numbers, not {nums_range}')
241			raise ValueError(message)
242
243			if min_value > max_value:
244			raise ValueError(
245			f'If {name} is a sequence, the second value must be'
246			f' equal or greater than the first, but it is {nums_range}')
247
248			if min_constraint is not None and min_value < min_constraint:
249			raise ValueError(
250			f'If {name} is a sequence, the first value must be greater'
251			f' than {min_constraint}, but it is {min_value}'
252			)
253
254			if max_constraint is not None and max_value > max_constraint:
255			raise ValueError(
256			f'If {name} is a sequence, the second value must be smaller'
257			f' than {max_constraint}, but it is {max_value}'
258			)
259
260			if type_constraint is not None:
261			min_type_ok = isinstance(min_value, type_constraint)
262			max_type_ok = isinstance(max_value, type_constraint)
263			if not min_type_ok or not max_type_ok:
264			raise ValueError(
265			f'If "{name}" is a sequence, its values must be of'
266			f' type "{type_constraint}", not "{type(nums_range)}"'
267			)
268			return nums_range
269
270			@staticmethod
271			def parse_probability(probability: float) -> float:
272			is_number = isinstance(probability, numbers.Number)
273			if not (is_number and 0 <= probability <= 1):
274			message = (
275			'Probability must be a number in [0, 1],'
276			f' not {probability}'
277			)
278			raise ValueError(message)
279			return probability
280
281			@staticmethod
282			def parse_subject(subject: Subject) -> None:
283			if not isinstance(subject, Subject):
284			message = (
285			'Input to a transform must be a tensor or an instance'
286			f' of torchio.Subject, not "{type(subject)}"'
287			)
288			raise RuntimeError(message)
289
290			def parse_tensor(self, data: TypeData) -> Subject:
291			if data.ndim != 4:
292			message = (
293			'The input must be a 4D tensor with dimensions'
294			f' (channels, x, y, z) but it has shape {tuple(data.shape)}'
295			)
296			raise ValueError(message)
297			return self._get_subject_from_tensor(data)
298
299			@staticmethod
300			def parse_interpolation(interpolation: str) -> Interpolation:
301			if isinstance(interpolation, Interpolation):
302			message = (
303			'Interpolation of type torchio.Interpolation'
304			' is deprecated, please use a string instead'
305			)
306			warnings.warn(message, FutureWarning)
307			elif isinstance(interpolation, str):
308			interpolation = interpolation.lower()
309			supported_values = [key.name.lower() for key in Interpolation]
310			if interpolation in supported_values:
311			interpolation = getattr(Interpolation, interpolation.upper())
312			else:
313			message = (
314			f'Interpolation "{interpolation}" is not among'
315			f' the supported values: {supported_values}'
316			)
317			raise AttributeError(message)
318			else:
319			message = (
320			'image_interpolation must be a string,'
321			f' not {type(interpolation)}'
322			)
323			raise TypeError(message)
324			return interpolation
325
326			def _get_subject_from_tensor(self, tensor: torch.Tensor) -> Subject:
327			image = ScalarImage(tensor=tensor)
328			return self._get_subject_from_image(image)
329
330			def _get_subject_from_image(self, image: Image) -> Subject:
331			subject = Subject({self.default_image_name: image})
332			return subject
333
334			@staticmethod
335			def _get_subject_from_dict(
336			data: dict,
337			image_keys: List[str],
338			) -> Subject:
339			subject_dict = {}
340			for key, value in data.items():
341			if key in image_keys:
342			value = ScalarImage(tensor=value)
343			subject_dict[key] = value
344			return Subject(subject_dict)
345
346			def _get_subject_from_sitk_image(self, image):
347			tensor, affine = sitk_to_nib(image)
348			image = ScalarImage(tensor=tensor, affine=affine)
349			return self._get_subject_from_image(image)
350
351			@staticmethod
352			def nib_to_sitk(data: TypeData, affine: TypeData) -> sitk.Image:
353			return nib_to_sitk(data, affine)
354
355			@staticmethod
356			def sitk_to_nib(image: sitk.Image) -> Tuple[torch.Tensor, np.ndarray]:
357			return sitk_to_nib(image)
358
359			@property
360			def name(self):
361			return self.__class__.__name__
362

fepegar / torchio

Pull Request — master (#346)

Transform.parse_range() F

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