1) Catmull-Rom spline
Catmull-Rom样条
1.
Image magnification method based on the C~2-continuous Catmull-Rom spline;
一种基于C~2连续Catmull-Rom样条的图像放大方法
2.
Catmull-Rom spline function has efficient interpolating ability and C1 continuity,and its derivative at each point is defined by the previous and next point.
Catmull-Rom样条函数具有C1连续性质与快速插值能力,其每一个节点的导数值都是由其相邻的2个节点确定。
3.
A new method of computer aided design for parison thickness was presented based on Catmull-Rom spline,which used geometric continuity of the Catmull-Rom spline,and operated curves by a set of control vertices and a set of shape parameter values.
提出了基于Catmull-Rom样条的型坯壁厚设计方法,该方法考虑Catmull-Rom样条的几何连续性,采用基于型值点和形状参数两种自由度的修改操作。
2) Catmull-Rom interpolation
Catmull-Rom插值
1.
First the original image was scaled with Catmull-Rom interpolation algorithm,then functions were invoked from OpenGL to draw triangle facets to produce smooth 3-D surface of the image,and in the end,OpenGL lighting was used to produce 3-D effect.
文中提出了一种二维图像的三维显示方法:首先利用Catmull-Rom插值算法对原图像进行缩放处理,再利用OpenGL绘制小三角形面片生成二维图像的三维平滑曲面,然后利用光照技术生成二维图像的三维显示效果。
3) Catmull-Rom interpolation algorithm
Catmull-Rom插值算法
1.
The article studied on the process of Catmull-Rom interpolation algorithm to improve show effecet of draw 3D terrain, the analysis and describe the algorithm and its application in specific OpenGL-based 3D terrain example, through projects to achieve the effect of contrast, Catmull-Rom interpolation algorithm will largely improve the 3D terrain s effect of show.
文章对应用Catmull-Rom插值算法改进三维地形绘制显示效果的过程进行了研究,在分析描述该算法后将其应用在具体的基于OpenGL的三维地形绘制实例中,通过工程实现的效果对比来看,Catmull-Rom插值算法将在很大程度上改进三维地形的绘制显示的效果。
4) spline
[英][splain] [美][splaɪn]
样条
1.
Automatic method of first break picking based on edge detection and spline interpolation.;
基于单道边界检测和样条插值的初至波自动拾取
2.
Wave surface reconstruction based on spline;
基于样条的波浪表面重建(英文)
3.
Spline Method for High-Precision Inter-Satellite Relative Positioning Based on Augmented DGPS;
基于增强型DGPS高精度星间相对定位的样条方法
5) splines
样条
1.
Temperature compensation of pressure sensor based on the interpolation of splines;
基于样条曲线插值的压力传感器的温度补偿
6) spline/Beta spline
样条/Beta样条
补充资料:B样条曲面
B样条曲面
B-spline surface
B yangtiao qumianB样条曲面(Bsp一ine surface)用分段B样条多项式函数及控制点网格定义的面。基于B样条曲线,可以得到B样条曲面的表示式。给定(m+1)(n十l)个空间点列凡(i=0,1,…,m,]=0,1,…,n),则s(二,w)一艺艺尸。从,*(。)凡,,(w),该二0少=O u,功任[0,1」定义了kXz次B样条曲面。式中从,*(u)和凡,,(w)分别是k次和l次的B样条基函数,由凡组成 的空间网格称为B样条曲面的控制点网格。上式 也可写成如下的矩阵式称(u,二)二认呱几M王w王,y任[l,。+2一划 z任[l,n+2一z〕,u,wC〔O,1」式中y,z—表示在u,w参数方向上曲面片的 个数。 Uk=[。‘一‘,uk一2,…,u,1〕, 钱二仁砂一’,砂一2,…,w,1〕, 凡,二氏,i任[y一1,y+k一2〕, ,任仁z一1,z+z一2] 凡是某一个B样条面片的控制点编号。最常用的 是二、三次均匀B样条曲面的构造。 (1)均匀双二次B样条曲面 已知曲面的控制点巧(i,]=o,1,2),参数u、 二,且O镇u,w簇1,k=l=2,构造步骤是: ①沿w(或u)向构造均匀二次B样条曲线,即 有 ,「‘一“P0(w,一L矿“」[一::侃同哪 WMs经转置后尸。(w)=「尸oo尸。,尸。2〕磷wT;同上可得P,(二)=[尸,。尸,,尸,2」M五WT pZ(二)=[pZ。p21 p22]M百wT ②再沿u(或w)向构造均匀二次B样条曲线,即可得到均匀双二次B样条曲面。 ,L 11﹁.!一|到泊恤、、/)pp(w嘿的嘿编s(u,w)二UM日(w T W TB M翻川州护P PP=UM白 匕PZo P21简记为s(u,二)二〔侧砂呵百wl (2)均匀双三次B样条曲面 已知曲面的控制点八(£,j=o,1,2,3),参数u,二且“,w任【0,1],构造双三次B样条曲面的步骤同上述,其矩阵形式是 S(u,w)=L时正声吸至百wT, 门几创川川旧洲翻叼--302 1222犯尸尸尸P尸尸尸尸尸冲尸峥 一一 P月J月j 3一6,l八、︶n”4.内J,1卜|匡IL 1一6 一一 姚双三次B样条曲面如图1所示。图1双三次B样条曲面
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参考词条