Remove the comments field from a nifti file

strip_comments_from_nifti.py

#! /usr/bin/env python

import nibabel as nib
import sys

if len(sys.argv) <= 2:
    print('Usage : strip_comments_from_nifti.py input_file output_file')
    exit()

infile, outfile = sys.argv[1:]

vol = nib.load(infile)
data = vol.get_data()
affine = vol.get_affine()
header = vol.get_header()

# Strip comments field, passes the fslhd, print header from nibabel
# and mrinfo tests for comments string.
header['db_name'] = ''
header['descrip'] = ''

# Save back everything
nib.save(nib.Nifti1Image(data, affine, header), outfile)