parametric curvature

According to the project of the Mini-Astrodynamical Space Test of Relativity using Optical Devices,(Mini-ASTROD) the Shapiro time delay in the general relativity is examined using the ground deep-space laser ranging,a scheme that observational values are compared with theoretical ones is given,and the value of the spatial curvature parameter γ is fit out.

根据Mini-ASTROD空间计划方案 ,利用地面深空激光测距来检验引力时延 ,给出了测量值与理论值直接比对的方案 ,并拟合出空间曲率参数γ的值。

Note on geometric transformation of parameter curve;

关于参数曲线的几何变换的一个注记

A pixel-by-pixel generating algorithm for polynomial parameter curves of degree 4 is presented.

提出一种生成四次参数曲线的算法 在生成曲线的过程中，采用增量计算有效地降低了计算量，并可动态调整步长，使生成的曲线达到像素

C~1 surface interpolation restricted to smooth parametric curve;

限制在光滑参数曲线上的С~1曲面插值

In response to new challenges and difficulties in multi-axis CNC machining, the angular interpolation for parametric curves is proposed and the general principle is outlined.

基于五轴数控加工的运动的分析,提出了旋转插补及相关的概念,讨论了线性进给速度与旋转进给速度之间的关系,针对参数曲线,建立了沿曲线的角弧长导数与旋转进给速度之间的关系,基于泰勒级数展开构建了参数曲线的旋转插补方法及算法。

A new real time interpolation algorithm for complex parametric curve, including high order polynomial curve, Bezier curve, B spline curve, NURBS curve, etc, was developed, which is based on Gauss Legendre quadrature and polynomial interpolation.

提出一种基于 Gauss- Legendre求积和多项式插值的复杂参数曲线 (包括高次多项式曲线、Bezier曲线、B样条曲线、NURBS曲线等 )实时插补算法 。

Research on a Number of Triangular Bézier Curves and Surfaces with Parameters;

三角Bézier参数曲线曲面的若干研究

Extensions of Curves and Surfaces with Shape Parameters in CAGD;

CAGD中带形状参数曲线曲面的扩展

Convexity Analysis and Convex-preserving Connection of Parametric Curves and Surfaces;

参数曲线曲面的凸性分析及保凸拼接

Research on Curved Path Real-time Interpolator with Feedrate Guide Curves

基于进给速度引导曲线的参数曲线实时插补器

Method of Polynomial Factor for Free-Form Deformation of Parametric Curves and Surfaces

参数曲线曲面自由变形的多项式因子方法

Research of Some Curves with Multiple Parameters in CAGD;

CAGD中某些多形状参数曲线的研究

T-Bézier Curves with Shape Parameter

带形状参数的T-Bézier曲线

Research on Bézier Curves and Surfaces with Shape Parameter;

带形状参数的Bézier曲线曲面的研究

Research on Bézier-Type Curve and Surface with Shape Parameters

带形状参数Bézier型曲线及曲面的研究

Hyperbolic Bézier Curves with Multiple Shape Parameters

带多形状参数的双曲Bézier曲线

The Parameter Equation of Space Curve s Projection on the Plane;

空间曲线在平面上的投影曲线参数方程

BASIC SPLINE CLASS CURVES AND ITS APPLICATION IN PARAMETRIZATION OF CURVES

B样条类曲线及其在曲线参数化中的应用

Returns an array of values that describes an exponential curve calculated in regression analysis to fit your data

返回一指数回归拟合曲线方程的参数

Estimator of Regression Coefficients in the Growth Curve Model;

生长曲线模型中回归系数的参数估计

Numeric and curve parameters for freeform surface feature models

自由曲面特征模型中的数值和曲线参数

Subdivision Curves and Surfaces Modeling with Geometric Constraints and Subdivision Parametrization;

带几何约束的细分曲线曲面与细分参数化

α-B Spline Interpolation Curves and Surface with Shape Parameters;

带形状参数的α-B样条插值曲线及曲面

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