Introduction - If you have any usage issues, please Google them yourself
Function to find B-spline discrete points, that is to find a polynomial, so the polynomial through the N points. B-spline fitting using neighboring points. For sampled data, according to three groups of consecutive samples of data to calculate a 2-order B-spline fitting as the function of this interval, the next three sets of data and then calculate the next B-spline, so you can continuously calculate the continuous sampling .