本文整理汇总了Python中nipy.core.api.AffineTransform.identity方法的典型用法代码示例。如果您正苦于以下问题：Python AffineTransform.identity方法的具体用法？Python AffineTransform.identity怎么用？Python AffineTransform.identity使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类nipy.core.api.AffineTransform的用法示例。
在下文中一共展示了AffineTransform.identity方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: smooth
# 需要导入模块: from nipy.core.api import AffineTransform [as 别名]
# 或者: from nipy.core.api.AffineTransform import identity [as 别名]
def smooth(self, inimage, clean=False, is_fft=False):
""" Apply smoothing to `inimage`
Parameters
----------
inimage : ``Image``
The image to be smoothed. Should be 3D.
clean : bool, optional
Should we call ``nan_to_num`` on the data before smoothing?
is_fft : bool, optional
Has the data already been fft'd?
Returns
-------
s_image : `Image`
New image, with smoothing applied
"""
if inimage.ndim == 4:
# we need to generalize which axis to iterate over. By
# default it should probably be the last.
raise NotImplementedError('Smoothing volumes in a 4D series '
'is broken, pending a rethink')
_out = np.zeros(inimage.shape)
# iterate over the first (0) axis - this is confusing - see
# above
nslice = inimage.shape[0]
elif inimage.ndim == 3:
nslice = 1
else:
raise NotImplementedError('expecting either 3 or 4-d image')
in_data = inimage.get_data()
for _slice in range(nslice):
if in_data.ndim == 4:
data = in_data[_slice]
elif in_data.ndim == 3:
data = in_data[:]
if clean:
data = np.nan_to_num(data)
if not is_fft:
data = self._presmooth(data)
data *= self.fkernel
data = fft.irfftn(data) / self.norms[self.normalization]
gc.collect()
_dslice = [slice(0, self.bshape[i], 1) for i in range(3)]
if self.scale != 1:
data = self.scale * data[_dslice]
if self.location != 0.0:
data += self.location
gc.collect()
# Write out data
if in_data.ndim == 4:
_out[_slice] = data
else:
_out = data
_slice += 1
gc.collect()
_out = _out[[slice(self._kernel.shape[i]/2, self.bshape[i] +
self._kernel.shape[i]/2) for i in range(len(self.bshape))]]
if inimage.ndim == 3:
return Image(_out, coordmap=self.coordmap)
else:
# This does not work as written. See above
concat_affine = AffineTransform.identity('concat')
return Image(_out, coordmap=product(self.coordmap, concat_affine))示例2: smooth
# 需要导入模块: from nipy.core.api import AffineTransform [as 别名]
# 或者: from nipy.core.api.AffineTransform import identity [as 别名]
def smooth(self, inimage, clean=False, is_fft=False):
"""
:Parameters:
inimage : `core.api.Image`
The image to be smoothed
clean : ``bool``
Should we call ``nan_to_num`` on the data before smoothing?
is_fft : ``bool``
Has the data already been fft'd?
:Returns: `Image`
"""
if inimage.ndim == 4:
_out = np.zeros(inimage.shape)
nslice = inimage.shape[0]
elif inimage.ndim == 3:
nslice = 1
else:
raise NotImplementedError, 'expecting either 3 or 4-d image.'
for _slice in range(nslice):
if inimage.ndim == 4:
data = inimage[_slice]
elif inimage.ndim == 3:
data = inimage[:]
if clean:
data = np.nan_to_num(data)
if not is_fft:
data = self._presmooth(data)
data *= self.fkernel
else:
data *= self.fkernel
data = fft.irfftn(data) / self.norms[self.normalization]
gc.collect()
_dslice = [slice(0, self.bshape[i], 1) for i in range(3)]
if self.scale != 1:
data = self.scale * data[_dslice]
if self.location != 0.0:
data += self.location
gc.collect()
# Write out data
if inimage.ndim == 4:
_out[_slice] = data
else:
_out = data
_slice += 1
gc.collect()
_out = _out[[slice(self._kernel.shape[i]/2, self.bshape[i] +
self._kernel.shape[i]/2) for i in range(len(self.bshape))]]
if inimage.ndim == 3:
return Image(_out, coordmap=self.coordmap)
else:
concat_affine = AffineTransform.identity('concat')
return Image(_out, coordmap=product(self.coordmap, concat_affine))