Electronic Skeletons: Modeling Skeletal Structures with Piecewise Algebraic Surfaces
Chanderjit L. Bajaj · Purdue e-Pubs (Purdue University System) · 1991
We present two algorithms to construct C1-smooth models of skeletal structures from CT/NMR voxel data.The boundary of the reconstructed models consist of a C1-continuous mesh of triangular algebraic surface patches.One algorithm first constructs Cl-continuous piecewise conic contours on each of the CT/NMR data slices and then uses piecewise triangular algebraic surface patches.to C 1 interpolate the contours on adjacent slices.The other algorithm works directly in voxel space and replaces an initial CO triangular facet approximation of the model with a highly compressed C1-continuous mesh of triangular algebraic surface patches.Both schemes are adaptive, yielding a higher density of patches in regions of higher curvature.