def __init__(self, file_object: Union[str, BinaryIO]):
"""
Parameters
----------
file_object : str|BinaryIO
file name or file like object for a NITF 2.1 or 2.0 containing a SICD.
"""
self._des_index = None
self._des_header = None
self._img_headers = None
self._is_sicd = False
self._sicd_meta = None
NITFDetails.__init__(self, file_object)
if self._nitf_header.ImageSegments.subhead_sizes.size == 0:
raise SarpyIOError('There are no image segments defined.')
if self._nitf_header.GraphicsSegments.item_sizes.size > 0:
raise SarpyIOError('A SICD file does not allow for graphics segments.')
if self._nitf_header.DataExtensions.subhead_sizes.size == 0:
raise SarpyIOError(
'A SICD file requires at least one data extension, containing the '
'SICD xml structure.')
# define the sicd metadata
self._find_sicd()
if not self.is_sicd:
raise SarpyIOError('Could not find the SICD XML des.')
def __init__(self,
file_name: str,
reverse_axes: Union[None, int, Sequence[int]] = None,
transpose_axes: Optional[Tuple[int, ...]] = None):
"""
Parameters
----------
file_name : str
file name for a NITF file containing a complex SICD
reverse_axes : None|Sequence[int]
Any entries should be restricted to `{0, 1}`. The presence of
`0` means to reverse the rows (in the raw sense), and the presence
of `1` means to reverse the columns (in the raw sense).
transpose_axes : None|Tuple[int, ...]
If presented this should be only `(1, 0)`.
"""
self._reverse_axes = reverse_axes
self._transpose_axes = transpose_axes
self._segment_status = None
self._sicd_meta = None
self._segment_bands = None
NITFDetails.__init__(self, file_name)
self._find_complex_image_segments()
if len(self.sicd_meta) == 0:
raise SarpyIOError(
'No complex valued image segments found in file {}'.format(
file_name))