2018 | OriginalPaper | Buchkapitel
Efficient and Accurate Evaluation of Bézier Tensor Product Surfaces
verfasst von : Jing Lan, Hao Jiang, Peibing Du
Erschienen in: Computational Science – ICCS 2018
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Abstract
CompVSTP
) algorithm, which extends the compensated Volk and Schumaker (CompVS
) algorithm, to evaluate Bèzier tensor product surfaces with floating-point coefficients and coordinates. The CompVSTP
algorithm is obtained by applying error-free transformations to improve the traditional Volk and Schumaker tensor product (VSTP
) algorithm. We study in detail the forward error analysis of the VSTP
, CompVS
and CompVSTP
algorithms. Our numerical experiments illustrate that the Comp-
VSTP
algorithm is much more accurate than the VSTP
algorithm, relegating the influence of the condition numbers up to second order in the rounding unit of the computer.