Boundary conforming mesh to T-NURCC surface conversion

The problem of seamless parametrization of surfaces is of interest in the context of structured quadrilateral mesh generation and spline‐based surface approximation. It has been tackled by a variety of approaches, commonly relying on continuous numerical optimization to ultimately obtain suitable parameter domains. We present a general combinatorial seamless parameter domain construction, free from the potential numerical issues inherent to continuous optimization techniques in practice. The domains are constructed as abstract polygonal complexes which can be embedded in a discrete planar grid space, as unions of unit squares. We ensure that the domain structure matches any prescribed parametrization singularities (cones) and satisfies seamlessness conditions. Surfaces of arbitrary genus are supported. Once a domain suitable for a given surface is constructed, a seamless and locally injective parametrization over this domain can be obtained using existing planar disk mapping techniques, making recourse to Tutte's classical embedding theorem.

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Section: Introductionmentioning

confidence: 99%

“…By construction, the resulting parametrizations are locally injective. This is a common prerequisite for the generation of valid integer grid maps, thus also quad meshes [BZK09] and spline surfaces [MAC19]. Specifically, we focus on the challenging problem of constructing suitable parameter domains for such parametrizations.…”

Section: Introductionmentioning

confidence: 99%