4-8 Subdivision
(CAGD 2001, Special Issue on Subdivision)
This paper extends four direction box splines to irregular triangle meshes.
It presents a semi-regular 4-8 refinement procedure and a generalization of
a box spline which is C4 continuous almost everywhere.
(See also Generalizing the C4 Four-directional Box Spline to Surfaces of Arbitrary Topology , Mathematical Methods in CAGD: Oslo 2000.)
Quasi 4-8 Subdivision Surfaces
(CAGD 2001)
This paper investigates the concept of quasi-stationary subdivision
arising from geometry-dependent refinement.
It also proposes a factorization of high order subdivision schemes through
repeated convolution.
