Dyadic C2 Hermite interpolation on a square mesh
For prescribed values of a function and its partial derivatives of orders 1 and 2 at the vertices of a square, we fit an interpolating surface. We investigate two families of solutions provided by two Hermite subdivision schemes, denoted HD^2 and HR^2. ...
Euclidean and Minkowski Pythagorean hodograph curves over planar cubics
Starting with a given planar cubic curve [x(t),y(t)]^T, we construct Pythagorean hodograph (PH) space curves of the form [x(t),y(t),z(t)]^T in Euclidean and in Minkowski space, which interpolate the tangent vector at a given point. We prove the ...
Surface mesh segmentation and smooth surface extraction through region growing
Laser range-scanners are used in fields as diverse as product design, reverse engineering, and rapid prototyping to quickly acquire geometric surface data of parts and models. This data is often in the form of a dense, noisy surface mesh that must be ...
Shape-preserving interpolation by fair discrete G 3 space curves
We present a new method for interpolation by a shape-preserving space curve with third-order geometric continuity. The curve is represented by a discrete sequence of vertices along with first, second, and third derivative vectors at each vertex, where ...
Dyadic C2 Hermite interpolation on a square mesh
For prescribed values of a function and its partial derivatives of orders 1 and 2 at the vertices of a square, we fit an interpolating surface. We investigate two families of solutions provided by two Hermite subdivision schemes, denoted H D2 and H R2. ...
Shape-preserving interpolation by fair discrete G3 space curves
We present a new method for interpolation by a shape-preserving space curve with third-order geometric continuity. The curve is represented by a discrete sequence of vertices along with first, second, and third derivative vectors at each vertex, where ...