14 citations · 14 across the 2 of their papers we have counts for
2 papers
math.GR2017
Nilpotent Approximations of Sub-Riemannian Distances for Fast Perceptual Grouping of Blood Vessels in 2D and 3D
Erik J. Bekkers, Da Chen, Jorg M. Portegies
We propose an efficient approach for the grouping of local orientations (points on vessels) via nilpotent approximations of sub-Riemannian distances in the 2D and 3D roto-translati…
math.AP2015★ 14 cited
New Approximation of a Scale Space Kernel on SE(3) and Applications in Neuroimaging
J. M. Portegies, G. R. Sanguinetti, S. P. L Meesters +1
We provide a new, analytic kernel for scale space filtering of dMRI data. The kernel is an approximation for the Green's function of a hypo-elliptic diffusion on the 3D rigid body…