Sciweavers

CAGD
2004
63views more  CAGD 2004»
13 years 10 months ago
Inflection points and singularities on C-curves
We show that all so-called C-curves are affine images of trochoids or sine curves and use this relation to investigate the occurrence of inflection points, cusps, and loops. The re...
Qinmin Yang, Guozhao Wang
CAGD
2004
74views more  CAGD 2004»
13 years 10 months ago
Discrete Laplace-Beltrami operators and their convergence
The convergence property of the discrete Laplace
Guoliang Xu
CAGD
2004
82views more  CAGD 2004»
13 years 10 months ago
NUAT B-spline curves
This paper presents a new kind of splines, called non-uniform algebraic-trigonometric B-splines (NUAT B-splines), generated over the space spanned by {1,t,...,tk-3,cost,sint} in w...
Guozhao Wang, Qinyu Chen, Minghua Zhou
CAGD
2004
87views more  CAGD 2004»
13 years 10 months ago
Existence of set-interpolating and energy-minimizing curves
We consider existence of curves c : [0, 1] Rn which minimize an energy of the form c(k) p (k = 1, 2, . . . , 1 < p < ) under side-conditions of the form Gj(c(t1,j), . . . ,...
Johannes Wallner
CAGD
2004
87views more  CAGD 2004»
13 years 10 months ago
Gliding spline motions and applications
We consider the ICP (iterative closest point) algorithm, which may in general be used for moving `active' elements such as curves and surfaces towards geometric objects whose...
Johannes Wallner
CAGD
2004
60views more  CAGD 2004»
13 years 10 months ago
Linear perturbation methods for topologically consistent representations of free-form surface intersections
By applying displacement maps to slightly perturb two free
Xiaowen Song, Thomas W. Sederberg, Jianmin Zheng, ...
CAGD
2004
121views more  CAGD 2004»
13 years 10 months ago
A conjecture on tangent intersections of surface patches
This note conjectures that if two surface patches intersect with G1 continuity along an entire curve, the probability is one that the curve is rational. This idea has significance...
Thomas W. Sederberg, Jianmin Zheng, Xiaowen Song
CAGD
2004
76views more  CAGD 2004»
13 years 10 months ago
Mesh quality improvement and other properties in the four-triangles longest-edge partition
The four-triangles longest-edge (4T-LE) partition of a triangle t is obtained by joining the midpoint of the longest edge of t to the opposite vertex and to the midpoints of the t...
Angel Plaza, José P. Suárez, Miguel ...
CAGD
2004
52views more  CAGD 2004»
13 years 10 months ago
SLEVEs for planar spline curves
Jörg Peters, Xiaobin Wu
CAGD
2004
113views more  CAGD 2004»
13 years 10 months ago
Developable surface fitting to point clouds
Given a set of data points as measurements from a developable surface, the present paper investigates the recognition and reconstruction of these objects. We investigate the set o...
Martin Peternell