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


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.


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How to Cite

Gual-Arnau, X., Ibáñez Gual, M. V., & Monterde, J. (2017). CURVATURE APPROXIMATION FROM PARABOLIC SECTORS. Image Analysis and Stereology, 36(3), 233–241.



Original Research Paper