Parameter	Value	Description
opt.method	‘nonrigid’	Non-rigid or rigid registration
opt.beta	1	The width of gaussian kernel (smoothness)
opt.lambda	3	Regularization weight
opt.viz	0	Don’t show any iteration
opt.outliers	0.3	Noise weight
opt.fgt	0	Do not use FGT (fast gaussian transform)
opt.normalize	1	Normalize to unit variance and zero mean before registering
opt.corresp	1	Compute correspondence vector at the end of registration
opt.max_it	100	Max number of iterations
opt.tol	1e-10	tolerance