查询词典 spline function

Further, it is found that the limit curve is a uniform rational cubic B-spline curve or the curve's control polygon when its tension parameters tend to zero or infinity respectively.

Barsky[4 ] 将具有张力参数样条的双曲样条曲线引入CAGD ，称之为张力样条参数曲线，并证明了这种曲线是一类泛函问题的极小解。

A new method of controlling moving path in real-time for engineering animation is presented based on de Boer algorithm for B-spline construction.

本文引入一种新的实时控制工程动画运动路径的方法，以构造B样条的德波尔算法为基础，在初始驱动样条路径上进行节点插入的局部升阶，生成新的插入节点u，并实时响应控制参数的输入v，将输入参数节点与节点插入生成的节点形成一组控制节点用来控制样条的偏移度，然后引入关于时间t的线性函数的质量权重Wk来控制路径曲线的偏移量。

The control point of new B spline can be computed by an explicit recurrence formula.

新B样条曲线的控制点由一个显式递推公式计算。

In this paper,the construction of parametric rational circular arc spline is introduced briefly,the recurrence relation bet.

文章首先介绍参数有理圆弧样条的构造，并建立相邻两分段点切向量之间的递推关系式，然后再利用此关系式给出了此参数有理圆弧样条保形性的充要条件，为实际应用提供了理论依据。

A new algorithm for modeling regression curve is put forward in the paper, it combines B- spline network with support vector regression.

摘要将ε-支持向量回归机与B-样条网络相结合，提出了一种建立回归曲线模型的新算法。

This dissertation researches in the vibrant clipped data of a plane, proposes regression analysis, BP learning algorithm and cubic spline interpolation to forecast the clipped data.

以国产某型无人机空飞时振动传感器测得的振动削波数据为研究对象，选用回归分析法、BP神经网络法和三次样条插值法对削波数据进行预测恢复。

The results are much better than the other approaches'. Then we give another method for approximating offset curves. The circle is first approximated by regular polygon within some tolerance. The exact offset curve is then approximated by the convolution of the regular polygon with a B-spline curve or a NURBS curve having the same degree.

与此同时作者从基圆的正多边形逼近出发，通过求解包络的技巧给出了等距曲线逼近的另一个算法，可整体估计误差，所得的等距逼近曲线为与基曲线同次数的B样条或NURBS曲线，克服了国际上现有同类算法中逼近曲线次数几倍于基曲线次数的缺陷。

We introduce the concept of irregular incremental integral samples. Therefore, we present the reconstruction of signal from regular and irregular incremental integral samples in spline subspaces and show the essence of the concept of incremental integral samples. The obtained results improve and generalize the Aldroubi, Moon, Zhou and Sun's results.

我们引入了非均匀增量积分采样的概念，并讨论了在样条子空间中从均匀增量积分采样和非均匀增量积分采样中的重构，从而揭示了增量积分采样的实质，获得的结果推广并改进了Aldroubi、Moon、周性伟、孙文昌等人的工作。

The road network segmentation results show that the improved B-spline Ribbon Snake can obtain a more accurate and smoother segmentation and is more robust to noise.

从改进的B样条Ribbon Snake的道路网分割结果可以看出，分割的结果更加平滑，精度更高，对噪声具有更好的鲁棒性。

The surface of conventional engineering part is composed of simple analytical surfaces and four-boundary ruled surface primarily. Therefore a point cloud segmentation method based on those feature surfaces is proposed. Several algorithms to identify the simple analytical surface feature are investigated and discussed. The theory of fitting scattered point to B－Spline and Bézier surfaces is introduced and a fitting method based on four boundary and point set is also discussed. Moreover, anew method to recover the fix-radius rolling ball blend is proposed and discussed in detail.

常规工程零件的外表面中包含了大量的特征曲面，如简单解析曲面和四边直纹面，因此，本文提出基于特征曲面的的点云分割方法，研究几种识别简单解析曲面的算法；研究由点云拟合B－Spline和Bézier曲线的理论基础，总结曲面拟合的几种方法，提出一种反求定半径滚球圆角的方法。

The studies on the developing of new media are very important to the increasing of the area density of HDD and to the implementation of hybrid recoding technology.

光磁混合记录方法，是一种可以突破超顺磁极限的限制，并进一步提高硬盘记录密度和读写速率的一种新型超高密度信息存储方式。

In io, mTOR inhibition promotes T cell anergy under conditions that would normally induce priming.

体内研究中，在正常可激发免疫反应的条件下，抑制mTOR可促使T细胞无能。