AffineInitializer brick¶

Initialize an affine transform using ANTs AffineInitizer¶

Mandatory inputs parameters:

moving_image (a string representing an existing file)
The moving image to be mapped to the fixed space (valid extensions: [.nii, .nii.gz]).
ex. '/home/username/data/raw_data/T1w.nii'
fixed_image (a string representing an existing file)
The fixed reference image (valid extensions: [.nii, .nii.gz]).
ex. '/home/username/data/raw_data/T1w_template.nii'

Optional inputs parameters with a default value:

dimension (3 or 2, optional, default value is 3)
Image dimension.
ex. 3
local_search (an integer, optional, default value is 10)
Determines if a local optimization is run at each search point for the set number of iterations.
ex. 10
out_prefix (a string, optional, default value is ‘AffineTransform’)
Prefix of the out transform file.
ex. 'AffineTransform_'
principal_axes (a boolean, optional, default value is False)
Whether the rotation is searched around an initial principal axis alignment.
ex. False
radian_fraction (a float between 0.0 and 1.0, optional, default value is 0.1)
Search this arc +/- principal axes.
ex. 0.1
search_factor (a float, optional, default value is 15.0)
Increments (degrees) for affine search.
ex. 15.0

Outputs parameters:

out_file (a strings representing a file)
Output transform file (extensions: [.mat]).
ex. '/home/username/data/derived_data/AffineTransform_T1w.mat'

Useful links: