Multigrid Convergent Curvature Estimator [chapter]

Christophe Fiorio, Christian Mercat, Frédéric Rieux
2013 Lecture Notes in Computer Science  
We propose in this paper an estimator of derivative and curvature of discrete curves. Based on adaptive convolution that preserves contour, we use local geometrical information as the heat kernel to convolve with a discrete curve and give estimation of its geometrical parameters. We recover on regular part of the curve the classical convolution based on gaussian kernel. We study the bounded error of our approach for first and second order derivative and we discuss about the multigrid convergence.
doi:10.1007/978-3-642-37067-0_34 fatcat:mqvvhq77kzaizedcmyt6sd5ffi