查询词典 absolutely convex hull

First,The properties of the spherical Bezier Curvesproposed by Ken Shoemake(Spherical Bezier curve of first kind)are listed,such asEndpoint property,Symmetry property,Invariant property under solid motion,Spherical convex hull property,etc.,and the fact that this kind of spherical BezierCurve is devoid of subdivision property is pointed out;Based on subdivision,theconcept of a new kind of spherical Bezier curve(Spherical Bezier curve of secondkind)is proposed.This kind of spherical Bezier curve is continuous differentiable.Furthermore,generalization of Bezier curve on more comprehensive manifolds isdiscussed.2Spherical Chaikin algorithm and general spherical corner-cuttingalgorithm.

首先，文中列举了Ken Shoemake提出的点点生成的球面Bezier曲线(第一类球面Bezier曲线)的性质，如端点性质、对称性质、运动不变性质、球面凸包性质等，并指出这种球面Bezier曲线没有剖分性质；基于细分，文中给出了一种新的球面Bezier曲线(第二类球面Bezier曲线)的构造方法，指出这种曲线是连续可微的；作为这些理论的应用，文中改进了Ken Shoemake提出的球面插值曲线构造方法；进一步，文中探讨了Bezier曲线在更广泛的流形上的推广方法。2球面Chaikin算法和一般的球面割角算法。

Based on nonsmooth analysis theory, the viability criterion is verified under the condition that the set-valued mapping in the right hand side is a polytope and the boundary function of the region is subdifferentiable and its subdifferential is a convex hull of finitely many points.

当右端集值映射为多面体，边界为次可微函数，且次微分为有限点集凸包时，基于非光滑分析理论，给出了在一点处检验生存性条件是否成立的方法。

This kind of tangential distortion, rubber fabric is like a kind of enterokinesia myofascialcutaneous, the ultimate in Nano-imprint lithography appear on both ends of the interval size of nano-imprint lithography convex hull, with the time, rubberand enterokinesia of largening, resulting in business card printing and membership card product forward control appears on the line of symmetry.

这种切向变形，使橡皮布暗地有如一种蠢动状，首先在不抬印区间的两头不入现不小小不等的凹包，随着不抬印工夫的放不小，橡皮蠢动量加不小，从而造不败在制卡和会员卡制作产物上不入现周向后规线不不差称不到位的本体。

The traditional convex hull algorithms of point set and that of simple polygons have parallelly developed without any combination.

传统点集凸包算法和简单多边形凸包算法平行发展，互不相干。

The key point is the convex hull and triangulated irregular network and their arithmetics and realizations.

在总结了前人在这些方面所做的工作的基础上，重点研究了凸壳算法和生成，基于不规则三网地形模型的算法和生成及详细的步骤。

Two different section planes'y coordinates are used to obtain one length size of human and a method, called convex hull method, to measure body section's girth, respectively. Using this technique, the 34 key figure lengths and girth sizes can be measured, and the factors affecting measurement precision can be analyzed.

确定人体的6个特征点和20个特征平面，分别应用对应截面y坐标差值法测量长度尺寸，凸壳法测量截面周长，测量了34个人体关键长度和周长，对影响测量精度的因素进行了分析。

Achieve a two-dimensional point set of convex hull algorithm, which uses quick sort.

详细说明：实现了一个2维点集的凸包算法，其中用到快速排序。

After doing a lot of experiments, the paper analyses the parameters that take effects when people judge directions between two objects, and concludes that there are two factors that play important roles: one is the diameter of the convex hull of the point set of two objects; another is the visible field between two objects.

在大量实验的基础上得出结论：在两目标方向关系判断中，目标图形的各个部分所起的作用是不一样的，起主要作用的因素有两个，其一是两目标间的可视区域，其二是两目标群点凸壳的直径。

To identify polyhedra which may be efficiently constructed by means of the convex hull operation

了解有那类多面体能够透过凸包而得以快速建构？

Based on analyzing the algorithms of Delaunay triangulation creation in domestic and abroad, in view of the situation of building DTM and the need of realizing railway 3D visual design, a divide-and-conquer algorithm to build DTM is presented, the algorithm use square grids to manage disordered points, to form triangular meshes in grids, DTM can be obtained by merging the triangular meshes, so that the work of sorting of the disordered points before building DTM is reduced greatly; moreover, the algorithm utilize subarea to control the vertices of convex hull so that the range which support points locate in can be predefined when searching support points, the workload of searching support points can be reduced and the speed of merging two triangulations is raised.

在分析了国内外构建DTM算法的基础上，针对DTM算法的现状及铁路线路三维可视化设计的需要，创立了一种构建DTM的分治算法。算法引入方格网管理离散点数据，在格中构建三角网，然后再将这些三角网合并形成DTM，极大地减少了构网前对所有参加构网的离散点进行排序的工作量。此外，通过对凸包顶点数据进行分区管理，在搜寻凸包支撑线时，能预先确定出支撑点的范围，减少了搜索工作量，提高了三角网的合并速度。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。