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- W3100401424 abstract "Intrinsic and parametric regression models are of high interest for the statistical analysis of manifold-valued data such as images and shapes. The standard linear ansatz has been generalized to geodesic regression on manifolds making it possible to analyze dependencies of random variables that spread along generalized straight lines. Nevertheless, in some scenarios, the evolution of the data cannot be modeled adequately by a geodesic. We present a framework for nonlinear regression on manifolds by considering Riemannian splines, whose segments are B'ezier curves, as trajectories. Unlike variational formulations that require time-discretization, we take a constructive approach that provides efficient and exact evaluation by virtue of the generalized de Casteljau algorithm. We validate our method in experiments on the reconstruction of periodic motion of the mitral valve as well as the analysis of femoral shape changes during the course of osteoarthritis, endorsing B'ezier spline regression as an effective and flexible tool for manifold-valued regression." @default.
- W3100401424 created "2020-11-23" @default.
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- W3100401424 date "2020-01-01" @default.
- W3100401424 modified "2023-10-03" @default.
- W3100401424 title "Nonlinear Regression on Manifolds for Shape Analysis using Intrinsic Bézier Splines" @default.
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- W3100401424 doi "https://doi.org/10.1007/978-3-030-59719-1_60" @default.
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