cubic curve

Using the theories of polarity and the properties of cubic curves on Newton s classification.

应用三次曲线的配极理论及其基本性质 ,讨论了三次曲线牛顿分类的依据 ,确定了牛顿分类中 4种形式和 7类曲线所对应的坐标系。

Research of a class of cubic curve graphs;

一类三次曲线图形的研究

In this paper we give the general form of a class of cubic system with cubic curve solution y=ax3+bx2+cx+d and we prove that this system has no limit cycle in the whole plane.

给出了以三次曲线ｙ＝ａｘ３＋ｂｘ２＋ｃｘ＋ｄ为解的一类三次系统的一般形式，并证明了该类 系统在全平面上不存在极限环。

Class of cubic Bézier curve with two phape parameters;

一类带两个形状参数的三次Bézier曲线

The curve inherits the most properties of cubic Bézier curve and the shape of Q-Bézier curve can be adjusted by alerting the two shape parameters when the control polygon is maintained.

Q-Bézier曲线不仅具有三次Bézier曲线的特征,而且在控制多边形保持不变的条件下,具有形状可调性和对控制多边形更好的逼近性。

Firstly, a quintic PH-spline curve is used to approximate a cubic Bézier curve within a bound.

研究用C1连续的五次Pythagorean-Hodograph样条曲线逼近一给定的三次Bézier曲线,证明了这种逼近算法在常用误差测度下的收敛性。

In CNC,it is often required to approximate cubic Bézier curves by arc splines with few arc segments as possible.

在数控加工领域,通常需要用尽量少段数的圆弧样条来逼近三次Bézier曲线。

This article mainly discussed some problems about clothoid transition curve in railway or highway winding section including a deduction method of clothoid equation, relationship of different presentations about similar formulas and comparition about cubic spiral equation and cubic parabola equation.

该文主要讨论铁路公路弯道中的回旋线缓和曲线的一些问题 ,包括 :回旋线方程式的一种导出方法、同类公式不同表达形式间的关系以及三次螺线方程式和三次抛物线方程式的比较讨论等

The paper proves an important property of n-order parabola, gereralizing the corresponding properties of cubic parabola.

证明了n次抛物线的一个重要性质,从而推广了三次抛物线的相应性质。

tangental point of a cubic

三次曲线的切线割点

A cubic expression, curve, or equation.

三次表达式，三次曲线，三次方程

A PLANE PARAMETRIC CUBIC CURVE THAT CONTACTS THE SECOND EDGE OF THE CHARACTERISTIC POLYGON

与特征多边形第二边相切的平面参数三次曲线

Cubic Trigonometric Bézier Curves and Surfaces with Multi-shape-parameters;

带多个形状参数的三次三角Bézier曲线和曲面

Automatic Fairing Algorithm for Planar Cubic NURBS Curves

平面三次NURBS曲线的自动光顺算法

Realization Cubic B-spline Curve Interpolation Based on DSP;

基于DSP的三次B样条曲线插补的实现

Determining Three-Dimensional Motion of Rigid Object from Image Sequence Using Correspondences of Conic Curves;

利用二次曲线对应确定刚体三维运动

Approximation of Circles by Curvature Continuous Be′zier Curves;

利用三次Be′zier曲线逼近圆的一种方法

The Program of Visual Basic for Thrice Spline Interpolatory;

三次样条曲线的Visual Basic程序设计

Spline Interpolation Based on Cubic Bézier Curve

基于三次Bézier曲线的样条插值算法

Thinning and Optimization of Cubic Hermit Curves

三次Hermite插值曲线的细化优化

Distorting method for cubic NURBS based on weights

基于权因子的三次NURBS曲线推拉方法

Cubic NURBS expression for contour curves of parallel indexing cam

平行分度凸轮轮廓曲线的三次NURBS表示

Fairing Extending of Cubic Bézier Curve with Parameter

带参数λ的三次Bézier曲线的光顺延拓

Interpolation method of cam profile based on cubic NURBS curve

基于三次NURBS曲线的凸轮轮廓插值方法

Subdivision Algorithm,Connection and Applications of Cubic H-Bézier Curves

三次H-Bézier曲线的分割、拼接及其应用

Cubic TC-Bézier curves with shape parameter

带形状参数的三次TC-Bézier曲线

Geometric constraint solving with cubic Bezier curve

利用三次Bezier曲线求解几何约束问题