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Rational Operators Based on q-Integers
被引:3
|作者:
Amato, Umberto
[1
]
Della Vecchia, Biancamaria
[2
]
机构:
[1] Natl Res Council Italy, Ist Microelettron & Microsistemi, Via Pietro Castellino 111, I-80131 Naples, Italy
[2] Univ Roma La Sapienza, Dipartimento Matemat, Piazzale Aldo Moro 5, I-00185 Rome, Italy
关键词:
Shepard operators;
q-integers;
pointwise approximation error estimates;
Shepard-type curves;
shape modeling;
LUPAS Q-ANALOG;
BERNSTEIN OPERATOR;
BEZIER CURVES;
APPROXIMATION;
SATURATION;
SURFACES;
D O I:
10.1007/s00025-017-0682-8
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
Shepard-type rational operators based on q-integers are studied and convergence results and pointwise approximation error estimates improving previous statements are obtained. Influence of choice of q on the error estimates is also discussed. Techniques in CAGD for shape modeling of rational curves based on above operators are also presented and numerical examples are given.
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页码:1109 / 1128
页数:20
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