White Matter Fiber Tractography Using Nonuniform Rational B-Splines Curve Fitting

Algorithm 3

Summary of NURBS-G fiber tracking.

	Input: consecutive diffusion directions
	Output: fiber pathways
	(1) Determine the control points. The set of control points is only composed of intersection points between diffusion direction and voxel border. The intersection points are acquired according to the equation given in the Algorithm 2.
	(2) Compute the weights according to the equation given in the Algorithm 2.
	(3) The knot vector is the same as the equation given in the Algorithm 2.
	(4) NURBS fitting according to the equation given in the Algorithm 2.