Method and system for determining connection states of straight short vectors representing figure in curve fitting

摘要

In curve fitting to straight short vectors, a corner point is detected by a determination of |Pi - Vi| δ on the basis of a connecting point Pi, an interpolation point Vi and a reference value δ . After a comparison of the distance between vectors Pi-1Pi and PiPi+1 connected at the connecting point Pi, a determination of |Pi - Pi-1| cos(ϑi/2) δ or |Pi+1 - Pi-1| cos(ϑi/2) δ is performed to detect a point at which a straight line connects a curve smoothly, a point at which a curve connects a straight line smoothly or a point on a curve.