The function cvApproxPoly approximates one or more curves and returns the approximation result[s]. In case of multiple curves approximation the resultant tree will have the same structure as the input one (1:1 correspondence)

public Contour ApproxPoly(
	double accuracy
)

Public Function ApproxPoly ( _
	accuracy As Double _
) As Contour

public:
Contour^ ApproxPoly(
	double accuracy
)