 全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多   control polygons 在 计算机软件及计算机应用 分类中 的翻译结果: 查询用时：0.266秒 在分类学科中查询 所有学科 计算机软件及计算机应用 数学 更多类别查询 历史查询  control polygons 控制多边形(8)  控制多边形
 The Research of the Bounds on the Deviation between Curves and the Corresponding Control Polygons 曲线与控制多边形之间偏差的界的研究 短句来源 Based on the study of the bounds on the deviation between curves and surfaces and the corresponding control polygons and nets, a new algorithm is presented to reduce the bounds on the deviation between the former curves and the corresponding control polygons. 本文在研究了以往关于曲线曲面与控制多边形及控制网格之间偏差界的基础上,提出了一种新的算法,缩小了原有的曲线与控制多边形之间偏差的界。 短句来源 In this paper conception and current research of bounding box is firstly introduced, and necessity of the research about the bounds on the deviation between curves and surfaces and the corresponding control polygons and nets is pointed out. 本文首先介绍了包围盒的概念和研究现状,指出了对曲线曲面与控制多边形及控制网格之间偏差的界的研究的必要性。 短句来源 In the second chapter brief introduction about the development and basic conceptions of curves and surfaces is presented. Meanwhile, it is illustrated that characteristic of curves and surfaces is one of the important foundations in the research of the bounds on the deviation between curves and surfaces and the corresponding control polygons and nets. 第二章对曲线曲面的发展及基本概念作了比较简短的概括性介绍,阐明了曲线曲面的性质是研究曲线曲面与控制多边形及控制网格之间偏差的界的重要基础。 短句来源 We present the bounds on the deviation between univariate polynomials, tensor product polynomials, univariate splines, and tensor product splines and the corresponding control polygons and nets. The bounds on the Lp-norm are given in terms of the maximal absolute second differences of the control point sequence. 最后分别介绍了一元多项式、张量积多项式、一元样条和张量积样条同相应的控制多边形或者控制网格之间偏差的界,给出了Lp-norm范数空间下,根据控制顶点序列的最大绝对二阶差分得出的界。 短句来源 更多 “control polygons”译为未确定词的双语例句
 A simple algorithm of constructing planar piecewise 4-order HBézier-like curves with all edges tangent to given control polygons is described. 提出了构造与多边形各边都相切的平面分段 4 阶 H Bézier-like 曲线的简便算法. 短句来源 First the control mesh is refined twice by using subdivision rules such as Doo-Sabin subdivision, Catmull-Clark subdivision. Then the refined control mesh is transformed into control polygons of Bézier surfaces or B-spline surfaces. 首先,采用Doo-Sabin或Catmull-Clark细分规则细分控制网格,并把细分后的控制网格转化为整体光滑拼接的Bézier曲面或B-样条曲面,自由曲面上的参数切向与其法向张成了一个局部坐标系; 短句来源 On this basic, paper find the connection of rational B-spline basis and rational Bézier basis,based on these relation ,find the control polygons’relation. 进一步还给出了有理B样条曲线和有理Bézier曲线的相互转化关系. 短句来源 Through a parameterization to the control polygons of 3D Rational Bezier curves,the approximative degree of the series of degree elevation polygons to their curves is presented, the uniform convengence property is obtained further. 本文通过对空间参数有理Bezier曲线的特征多边形的参数化，推得升阶多边形序列对曲线的逼近程度，进而得到一致收敛性。 短句来源 By changing the value of the shape parameter,the approaching degree of the curves to their control polygons can be adjusted and the n-degree Bézier curves can be manipulated from both sides. The presented method is very useful for the curve design. 通过改变形状参数的取值,可以调整生成曲线接近控制多边形的程度,调整曲线从n次Bézier曲线的两侧逼近n次Bézier曲线,便于进行曲线设计。 短句来源 更多 查询“control polygons”译词为用户自定义的双语例句

我想查看译文中含有：的双语例句  control polygons
 It is known that non-self-intersecting regular Bézier curves have non-self-intersecting control polygons, after sufficiently many uniform subdivisions. It is known that the sequence of control polygons of a Bézier-De Casteljau curve or surface obtained by the "degree elevation" process converges towards the underlying curve and surface. Bernstein bases, control polygons and corner-cutting algorithms are defined for C1 Merrien's curves introduced in . This paper presents a short, simple, and general proof showing that the control polygons generated by subdivision and degree elevation converge to the underlying splines, box-splines, or multivariate Bézier polynomials, respectively. The paper analyses the convergence of sequences of control polygons produced by a binary subdivision scheme of the form 更多 A new method for fast finding the intersection of two bicubic parametric sulfaces in theform of Bezier and B-spline is proposed.It is an improvement on three existing ones.Thismethod is based on the“subdivision”of control polygons of the surfaces. If two control poly-gons are sufficiently approximate to the surfaces,the latter can be replaced by the tinyplanes of the control polygons and the curve of intersection can be quickly found by a seriesof intersections of triangles and lines defined... A new method for fast finding the intersection of two bicubic parametric sulfaces in theform of Bezier and B-spline is proposed.It is an improvement on three existing ones.Thismethod is based on the“subdivision”of control polygons of the surfaces. If two control poly-gons are sufficiently approximate to the surfaces,the latter can be replaced by the tinyplanes of the control polygons and the curve of intersection can be quickly found by a seriesof intersections of triangles and lines defined in a particular way.This method is stable andof good convergence rate and high efficiency.It has been successfully used in the investiga-tion on VISC for a 3-D computer electromagnetic radiation field and some other investiga-tions. 针对工程上广泛应用的双三次Ｂｅｚｉｅｒ，Ｂ样条曲面，提出一种新的曲面求交方法．这种方法基于曲面控制网格的“子”分方法，只要控制网格足够逼近曲面，便可用控制网格的小平面代替曲面本身，从而快速求出两张双三次参数曲面的交线． Through a parameterization to the control polygons of 3D Rational Bezier curves,the approximative degree of the series of degree elevation polygons to their curves is presented, the uniform convengence property is obtained further.Then a geometric definition of variation diminishing property is given, and it is proved that 3D Rational Bezier curves have this property. At last, the convexity property of this kind of curves is shown. 本文通过对空间参数有理Ｂｅｚｉｅｒ曲线的特征多边形的参数化，推得升阶多边形序列对曲线的逼近程度，进而得到一致收敛性。接着用几何方法定义了变差减缩性质，并且推得空间有理Ｂｅｚｉｅｒ曲线具有这种性质。最后是参数有理Ｂｅｚｉｅｒ曲线为凸的条件。 This paper presents a method to ensure the fitting convex interpolation value,namely,to control the controlling vector of Beta sample which has a functional fitting curve,thus establishing a criterion in judging the convex with the relation between node control polygons and the control of polygons as a conditions. 本文采用Ｂｅｔａ样条函数拟合曲线，提出了通过控制Ｂｅｔａ样条的控制矢量以保证拟合的保凸性，建立了以节点多边形与控制多边形之间关系为条件的保凸性判别准则。 << 更多相关文摘 相关查询

 CNKI小工具 在英文学术搜索中查有关control polygons的内容 在知识搜索中查有关control polygons的内容 在数字搜索中查有关control polygons的内容 在概念知识元中查有关control polygons的内容 在学术趋势中查有关control polygons的内容
 CNKI主页 |  设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索 2008 CNKI－中国知网 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社