有理Bézier曲线
有理Bézier曲线的相关文献在1998年到2021年内共计62篇,主要集中在自动化技术、计算机技术、数学、自然科学丛书、文集、连续性出版物
等领域,其中期刊论文54篇、会议论文6篇、专利文献28156篇;相关期刊37种,包括高师理科学刊、研究生论丛、安徽大学学报(自然科学版)等;
相关会议6种,包括第十届中国计算机图形学大会暨第十八届全国计算机辅助设计与图形学会会议、第十七届全国计算机辅助设计与图形学学术会议(CAD/CG’ 2012)暨第九届全国智能CAD与数字娱乐学术会议(CID’ 2012)、第四届全国几何设计与计算学术会议(GDC2009)等;有理Bézier曲线的相关文献由108位作者贡献,包括王国瑾、朱春钢、朱晓临等。
有理Bézier曲线—发文量
专利文献>
论文:28156篇
占比:99.79%
总计:28216篇
有理Bézier曲线
-研究学者
- 王国瑾
- 朱春钢
- 朱晓临
- 章林忠
- 蒋莉
- 韩旭里
- 余胜蛟
- 冯仁忠
- 刘莲
- 叶正麟
- 夏宝玉
- 康宝生
- 张跃
- 徐晨东
- 朱如媛
- 李汪根
- 杨莉
- 杭后俊
- 汪国昭
- 石茂
- 肖鸣宇
- 胡倩倩
- 芮义鹤
- 赵轩艺
- 邓金秋
- 郭庆杰
- 陈军
- 高文武
- Guo Qingjie
- XIA Bao-Yu
- Xu Chendong
- YANG Li
- ZHAO Xuan-Yi
- ZHU Chun-Gang
- Zhang Yue
- Zhu Chungang
- Zhu Ruyuan
- 严兰兰
- 乌仁高娃1
- 于淑妹
- 井爱雯
- 何磊
- 刘圣军
- 刘建贞
- 吴欢欢
- 周敏
- 周联
- 唐月红
- 姚云
- 孙黎
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刘建贞;
李亚娟
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摘要:
由一个简单不等式出发,采用函数分解之后再归类综合的方法,提出一种有理Bézier曲线高阶导矢界的计算方法.当有理Bézier曲线的权因子都退化为1时,高阶导矢界就退化成Bézier曲线的高阶导矢界.
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胡倩倩;
王伟伟;
王国瑾
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摘要:
In order to get the approximately arc-length parameterized rational Bézier curves, a method for reparameterization of rational Bézier curves is proposed based on a piecewise M?bius parameter transfor-mation. This method constructs the piecewise M?bius transformation applying to the rational Bézier curve, on which the break points are chosen as the locally maximal value points of its curvature. And a metric function is defined by the deviation of new parametric speed from unit-speed with respect to L2norm under the condition of C1continuous parametric speed. Then the expression of this M?bius transformation is ob-tained by minimizing the metric function. Numerical examples show that rational Bézier curves with piece-wise M?bius transformation have good parameters very close to the arc-length parameter.%为了得到近似弧长参数的有理Bézier曲线表示, 提出基于分段M?bius参数变换的有理Bézier曲线的重新参数化方法. 该方法将曲线的曲率极大值点作为分段点构造分段 M?bius 参数函数; 在保证参数速率 C1的连续条件下,用新参数速率关于单位速率偏离变量的 L2范数作为度量标准函数; 通过最小化该目标函数求得分段 M?bius 函数的具体表示. 实例结果表明, 通过分段M?bius变换后, 有理Bézier曲线的参数具有很好的弧长参数近似效果.
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李敬改;
陈秋阳;
韩佳琦;
黄奇立;
朱春钢
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摘要:
构造参数曲线曲面一直是计算机辅助几何设计研究的核心内容之一.以Bernstein基函数构造的Bézier曲线是参数曲线造型最基本的方法,B样条曲线和NURBS曲线都是在其基础上发展而来.利用给定的实数节点集,构造一类特殊的基函数,此类基函数是Bernstein基函数的推广.在此基础上,构造了一类新的参数曲线,称为T-Bézier曲线,T-Bézier曲线继承了有理Bézier曲线的若干性质;证明了当节点移动时极限曲线的几何性质,并通过实例进行了验证.%The construction of parametric curves and surfaces is very important in computer aided geometric design.It's well known that Bézier curve,which is defined by Bernstein basis functions is a basic method in curve design,and the B-spline curve and NURBS curve are generalizations of the Bézier curve.This paper defined a new kind of basis functions by a given real knot points set,which is a generalization of Bernstein basis functions,and defined a new parametric curve by these basis functions,called T-Bézier curve,which preserves some properties of Bézier curve.What's more,this pa-per presented the limit property of T-Bézier curve while some knots move and gave some examples to verify the proper-ties of the curve.
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李志惠
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摘要:
In this paper,some basic inequalities are introduced,the height estimation of Bézier curve and rational Bézier curve is improved according to the derivation rule,and the discrete final criterion of rational Bézier curve is optimized.At last,the improved criterion in this paper is validated by using the extreme value problem.The validity of the proposed method is verified by experiments.%利用一些基本的不等式,按照求导法则,对Bézier曲线和有理Bézier曲线的高度估计进行改进,同时对有理Bézier曲线的离散终判准则进行了优化,最后利用极值问题验证了改进准则的有效性.
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张久廷
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摘要:
针对实际应用中B′ezier曲线和有理B′ezier曲线的边界估计问题,建立了一类Bernstein多项式的不等式,使B′ezier曲线和有理B′ezier曲线的边界估计得到了提升.实际应用表明,改进的方法优于现有的B′ezier曲线和有理B′ezier曲线高度估计方法.%In order to solve the problem of boundary estimation of B′ezier curve and rational B′ezier curve in practice,a class of Bernstein polynomial inequalities is established.By constructing a series of ine-qualities on Bernstein polynomial,the boundary estimation of B′ezier curves and rational B′ezier curves is improved.The practical application shows that the improved method in this paper is superior to the exist-ing B′ezier curve and rational B′ezier curve height estimation method.
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王慧;
朱春钢;
李彩云
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摘要:
为构造封闭的曲线为有理Bézier曲面的边界渐近线,给出封闭四边曲线为渐近四边形的条件,并提出插值该四边形的曲面构造方法.首先在给定角点数据的前提下构造优化的n次有理Bézier渐近四边形;然后利用该四边形和曲面在四边形上的切矢确定曲面沿边界的两排控制顶点和权;最后极小化曲面薄板能量函数确定剩余自由的控制顶点,进而构造出光滑的双5n-7次有理Bézier插值曲面.实例展示边界曲线为有理3,4,5次时曲面的构造结果,以及边界曲线含有直线或者拐点的情况,表明该方法是可行的.%Conditions for construction of rational Bézier surface interpolating a closed quadrilateral as its asymptotic boundary are presented.Firstly,from the given comer data,an optimized rational Bézier asymptotic quadrilateral of degree n is constructed.Secondly,two arrays of control points and weights along the boundary curves are obtained from the quadrilateral and the tangent vectors of the surface.Finally,minimizing the plate spline energy determines the other free control points and then a smooth rational Bézier surface ofbi-(5n-7) degree is constructed.Some representative examples show the construction of surfaces interpolating the cubic,quartic or quintic rational Bézier asymptotic quadrilaterals and verify the effectiveness of the method.
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蒋莉
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摘要:
有理Bézier曲线的降阶是样条曲线和曲面造型中的关键技术之一,为了实现不同CAD系统之间的数据交换,都要用到这一技术,因此它已经成为该领域的热点问题.本文结合作者在该领域的研究成果,综述了近年来国内外专家学者关于有理Bezier曲线的降阶逼近研究的方法、理论成果及实际应用情况,对各种不同的方法进行了分析比较.
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