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We are talking about Non-uniform rational B-spline. We have some simple 3 dimensional array like


Which are points from a plane created by some B-spline

How to find control points of spline that created that plane? (I know its a hard task because of weights that need to be calculated but I really hope it is solvable)

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I really do not know tag system on math.stackexchange so feel free to edit tags. – Kabumbus Dec 14 '10 at 12:15

I saw a paper on Object contour extraction using adaptive NURBS VFC active contour:

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Welcome to MSE! I realize you don't yet have enough reputation, but this is better as a comment. It can certainly be improved by adding more specific details to answer the OP. Reagrds. – Amzoti May 4 '13 at 5:37

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