Non-uniform subdivision schemes of omega B-spline curves and surfaces with variable parameters?
Comput. Aided Des.(2023)
Abstract
In this paper, we propose a new non-uniform subdivision scheme that includes a tension parameters sequence. Each tension parameter of the sequence is assigned at each edge of the initial control polygon. The proposed scheme can produce limiting curves that are more consistent with the original data points and the control polygon. It has also the advantage of generating a wide variety of shapes for the limiting curves. Moreover, to produce smooth limit surfaces, the proposed scheme is firstly extended to tensor-product surfaces, then to meshes of arbitrary topology. The convergence and smoothness of the proposed scheme are proven. Numerical results that illustrate the advantages of the proposed non-uniform scheme are given. (c) 2022 Elsevier Ltd. All rights reserved.
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Key words
Non -uniform subdivision scheme,?B-spline,Variable parameters,Tensor -product,Arbitrary topology,Smoothness
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