pub const STI_DEFAULT_PAD_MM: f64 = 6.0;Expand description
Zero padding STI’s QSM_iLSQR uses when called without 'padsize' (as QSMART calls it),
in mm. Probed in STI Suite 3.0: output bitwise equal to an explicit padsize of 6 mm
(and different at 5.5 and 6.5) on five crop / voxel-size combinations.