loadsave
¶
Utilities to load and save image objects
guessed_image_type (filename) |
Guess image type from file filename |
load (filename, **kwargs) |
Load file given filename, guessing at file type |
save (img, filename) |
Save an image to file adapting format to filename |
which_analyze_type (binaryblock) |
Is binaryblock from NIfTI1, NIfTI2 or Analyze header? |
guessed_image_type¶
-
nibabel.loadsave.
guessed_image_type
(filename)¶ Guess image type from file filename
Parameters: filename : str
File name containing an image
Returns: image_class : class
Class corresponding to guessed image type
load¶
-
nibabel.loadsave.
load
(filename, **kwargs)¶ Load file given filename, guessing at file type
Parameters: filename : string
specification of file to load
**kwargs : keyword arguments
Keyword arguments to format-specific load
Returns: img :
SpatialImage
Image of guessed type
save¶
-
nibabel.loadsave.
save
(img, filename)¶ Save an image to file adapting format to filename
Parameters: img :
SpatialImage
image to save
filename : str
filename (often implying filenames) to which to save img.
Returns: None :
which_analyze_type¶
-
nibabel.loadsave.
which_analyze_type
(binaryblock)¶ Is binaryblock from NIfTI1, NIfTI2 or Analyze header?
Parameters: binaryblock : bytes
The binaryblock is 348 bytes that might be NIfTI1, NIfTI2, Analyze, or None of the the above.
Returns: hdr_type : str
- a nifti1 header (pair or single) -> return ‘nifti1’
- a nifti2 header (pair or single) -> return ‘nifti2’
- an Analyze header -> return ‘analyze’
- None of the above -> return None
Notes
Algorithm:
- read in the first 4 bytes from the file as 32-bit int
sizeof_hdr
- if
sizeof_hdr
is 540 or byteswapped 540 -> assume nifti2 - Check for ‘ni1’, ‘n+1’ magic -> assume nifti1
- if
sizeof_hdr
is 348 or byteswapped 348 assume Analyze - Return None