CURVATURE APPROXIMATION FROM PARABOLIC SECTORS

Abstract

We propose an invariant three-point curvature approximation for plane curves based on the arc of a parabolic sector, and we analyze how closely this approximation is to the true curvature of the curve. We compare our results with the obtained with other invariant three-point curvature approximations. Finally, an application is discussed.

Keywords

• curvature
• digital curve
• shape analysis
• three-point curvature approximation