网页In the mathematical subfield of numerical analysis, a B-spline or basis spline is a spline function that has minimal support with respect to a given degree, smoothness, and domain partition. Any spline function of given degree can be expressed as a linear combination of B-splines of that degree.
网页B-样条是 貝茲曲線 的一种一般化,可以进一步推广为 非均匀有理B样条 (NURBS),使得我们能给更多一般的几何体建造精确的模型。 De Boor算法 是一个 数值上稳定 的计算B样条的方法。 术语 B样条 是 Isaac Jacob Schoenberg 创造的,B 是基(basis)样条的缩略。 定义. 给定 m +1 个节点 ti ,分布在 [0,1]区间,满足. 一个 n 次 B样条 是一个 参数曲线: 它由 n 次 B样条基 (basis B-spline) 组成. . Pi 称为 控制点 或 de Boor点. m +1个 n 次B样条基可 …
网页2024年8月22日 · A B-spline is a generalization of the Bézier curve. Let a vector known as the knot vector be defined T={t_0,t_1,...,t_m}, (1) where T is a nondecreasing sequence with t_i in [0,1], and define control points P_0, ..., P_n.
网页For example, each cubic basis spline, or B-spline, is a continuous piecewise-cubic function with continuous first and second deriva-tives. Thus any linear combination of such B-splines will inherit the same continuity properties.
网页A B-spline curve is defined as a linear combination of control points and B-spline basis functions given by (1.62) In this context the control points are called de Boor points .
网页These notes present the direct definition of the B-Spline curve. This definition is given in two ways: first by an analytical definition using the normalized B-spline blending functions, and then through a geometric