查询词典 parametric curve

Based on a localization principle and subband decomposition, monoscale ridgelet and curvelet were proposed, both of which were derived from ridgelet transform and can efficiently deal with smooth images with smooth edges including straight and curve singularity. They, hence, are of better application potention. sparse representation;optimal basis;ridgelet;curvelet;image denoising;non-parametric estimation

单尺度脊波和Curvelet变换由脊波变换发展而来，分别利用了函数局部化和频带剖分的思想，将脊波理论发展到了一个更高的阶段，这两种变换都能"近似最优"的表示直线和曲线奇异，因而具有更好的应用前景。

Finally, the difficulty of curve parametric design is discussed, the research direction is pointed out.

最后讨论了曲线参数化的难点，给出了进一步研究的方向。

The problem of parametric speed approximation of a curve is raised in this paper.

该文提出了曲线的参数速度逼近问题，指出等距曲线逼近的关键在于参数速度的逼近，并用两种方式来实现它。

In order to solve these problems, a direct interpolation algorithm for the projective curve on parametric surface is proposed in this paper.

针对这种情况，文中针对参数曲面上以投影方式形成的空间曲线轨迹，提出了一种直接插补算法。

Returns the parametric extents of the curve.

返回曲线的参数，参数相当于曲线终点。

The paper mainly expatiates how to get vector contours quickly and accurately by parametric spline curve in AutoCAD.

0引言随着计算机制图技术的不断发展，纸质地形图的矢量化成了实际生产过程中一项繁重而重要的工作。

Consider a plane curve with parametric equation.

设平面曲线的参数方程为，则曲率为

Based on the local parametric representation of a curve, the mathematical models of planar mechanism optimum synthesis for the local path generation are built. Objective functions are constructed generally and for some special cases as well.

在平面曲线局部参数表示的基础上建立平面机构局部轨迹优化综合的数学模型，构造了一般情况下及常见特殊情形的优化目标函数。

This problem of planar parametric polynomial curve of degree 3 had been discussed perfectly many years ago, making use of invariant of affine transformation.

关于三次代数多项式参数曲线的这一问题早已解决，然而所用的几何不变量方法对于非代数曲线失效。

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。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。