It works like a parametric curve but with two parameters.
它像一个有两个参数的参数曲线。
The other is smoothing of combination of parametric curve.
二是组合参数曲线的磨光。
There are two kinds of curve definitions: implicit curve and parametric curve.
前言： 空间三维曲线有两种数学表达形式：隐式方程曲线及参数方程曲线。
And then, we provide an algorithm for approximating an arbitrary parametric curve by circular arcs.
然后针对给定参数方程的曲线，提出一种圆弧拟和的实用算法。
In this paper, a numerical method is presented for nearly arc length parameterization of parametric curve.
讨论参数曲线近似弧长参数化的数值方法。
B-Spline curves and curve surfaces are the most commonly used parametric curves and surfaces in Computer Graphics.
样条曲线曲面是在计算机图形学中应用最广泛的参数曲线曲面类型。
So, I will have some parametric curve that lives on this surface so, the question is, what's going to happen at any given time?
也就是我在此平面上有一个参数曲线，所以问题就是，在任意给定时刻会发生什么呢？
The experimental result shows that the parametric curve of uniform interpolation in less than 6 rank is better in performance.
实验表明，采用低阶(一般小于6阶)参数插值方程实现连接，效果好。
Space Deformations controlled by parametric curve or surface are important methods for geometric shape edit and flexible object animation.
基于参数曲线和曲面控制的空间变形是重要的几何外形编辑和柔性物体动画实现手段。
Regularity is an important algebraic property of parametric curve and surface, which depends on the parameterization of parametric curve and surface.
正则性是参数曲线曲面的重要代数性质，是由参数曲线曲面的参数化决定的。
Based on the original geometrical definition of the convexity for planar parametric curve, the local and global convexity are discussed, and a few properties are obtained.
依据参数曲线凸性的原始几何定义，讨论了参数曲线的局部凸和全局凸性，得到了参数曲线局部凸和全局凸的若干性质。
By using a certain projective transformation, a smooth planar parametric curve with any function may be changed into a new planar parametric curve of order 3 in a rational form.
本文讨论了任意函数类的一条光滑平面参数曲线段，在适当的射影变换下，可以变为相应的有理形式的平面三阶参数曲线。
At any knots, the nearly arc length are precise for the resulting nearly arc length parametric curve, and it has the unit tangent same as that of the real arc length parametric curve.
所作近似弧长参数化曲线在插值节点处，近似弧长是精确的，并且具有与精确弧长参数曲线同方向的单位切矢。
This paper proposes two different interpolation algorithms for parametric curve. These algorithms are of great value to improve the accuracy and machining speed of numerical control system.
本文介绍了参数曲线的两种不同的实时插补算法，它们在提高数控系统的速度和精度方面具有很好的效果。
Based on geometry and convex set methods, this paper gives systemically the definitions of global and local convexity for planar closed parametric curve, and proves the two definitions are equivalent.
从几何和凸集的角度，系统地给出了平面闭参数曲线全局凸和局部凸定义，并且证明了这两个定义是等价的。
A method for constructing a parametric cubic curve to interpolate a set of distinct data points was presented.
提出了一种构造三次参数曲线对给定数据点插值的新方法。
By the parametric representation, fuzzy number means a bounded continuous curve in the two-dimensional metric space R2, so that it is easy to analyze fuzzy differential equations.
在此参数表示下，模糊数可直接视为二维度量空间r 2中的有界连续曲线，这给分析模糊微分方程带来了便利。
When a inverse function of monotone function can not show the explicit formula, the distribution density curve of continuous randon variable can be gained with a parametric equation.
当单调函数的反函数不能显性表示时，连续型随机变量的分布密度曲线仍可通过参数方程的形式获得。
From commonly used equation of calculating plane figure quadrature, formulas of calculating plane figure quadrature by applying curve parametric equation can be deduced.
从由曲线普通方程求平面图形面积的公式出发推出在各种情形下由曲线参数方程求平面图形面积的公式。
Based on the vector equation, a real time interpolation algorithm for the cubic parametric spline curve in CNC systems is proposed.
根据三次参数样条曲线的矢量表示方法，导出了一种CNC系统中样条曲线的实时插补算法。
Geometric active contour model has many advantages over parametric active contour model, such as computational simplicity and the ability to change curve topology during deformation, et al.
相对于参数活动轮廓模型，几何活动轮廓模型具有很多的优点，如计算的简单性和在变形的过程中能够处理曲线的拓扑变化，等等。
This paper infers the parametric equation of the quadric B-spline curve, introduces its character, and gives the special method of process when the curve is approximated.
本文推导出计算机绘图中的二次B一样条曲线的参数方程，介绍二次B一样条曲线的性质，并给出在逼近曲线时的特殊处理方法。
The method has many USES, such as the design of industry shaping and the parametric deform of spline-curve.
这种方法有很多的用途，可以用于工业造型设计，也可以用于曲线的参数化变形。
Based on the parametric design of fair curve, the parametric design method of hull form is presented in the paper.
基于光顺曲线的参数化设计，提出了参数化的船型设计方法。
This paper describes the method that the irregular curve is fitted with accumulated chord length parametric cubic spline.
用累加弦长参数三次样条拟合不规则曲线，使拟合后的曲线光滑圆顺。
Furthermore, a fractional linear parametric segment is defined; the necessary and sufficient conditions for which the curve is such a segment are also obtained. All the above condition...
还给出了它是分式线性参数段的充分必要条件，这些条件都仅与权系数有关。
The paper studies the tessellating algorithm of NURBS curve and surface, then puts forward the tessellating method of NURBS tri-parametric solids.
随后论文研究了NURBS曲线曲面的分割算法，进而推导出NURBS三参数实体的离散方法。
The parametric representations of curved surface and curve line are given. The advantage of this representation is also analyzed.
给出曲面、曲线的参数表示法，并且分析了参数表示法的优越性。
The parametric representations of curved surface and curve line are given. The advantage of this representation is also analyzed.
给出曲面、曲线的参数表示法，并且分析了参数表示法的优越性。
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