In geometric modeling , the manipulation of objects may need complex operations such as compress , expand or twist a part of an object 在几何造型，数控加工领域中。常常需要应用变形技术来处理一些易于弯曲伸缩的物体。
Reconstruction of b - spline surface is an important part of computer geometric modeling and plays an essential role in computer graphics B样条曲面重建是三维几何造型技术中很重要的部分，也是计算机图形学研究的重要内容。
Ieee computer graphics and its applications , 1993 , 13 : 53 - 59 . 3 middleditch a , sears k . blending surfaces for settheoretic volume modeling system 曲面拼接在诸如机械设计计算机图形与动画以及几何造型等各种领域都有广泛的应用。
Studying works are as follows : ( 1 ) with the radial edge data structure , the description of ob - ject in c omputer memory is provided 本文的工作是该系统中的几何造型系统部分，主要包括以下几个方面： ( 1 )用辐射边结构提供形体在计算机内部的表示。
In chapter 4 we constitute the dynamic ir scene by combining scene geometry modeling with ir texture images . in this way the complexity of ir scene is reduced 本文第四章采用了场景几何造型和红外纹理图像混合的简化方法来进行红外动态场景的建模。
Special geometries and complex constructional elements that incorporate tecsis know - how are increasingly taking over complex tasks in plant and machinery 结合了tecsis擅长技术的独特几何造型和复杂结构元件越来越多的为我们接来工厂和机械上复杂的任务。
With traditional gcometry - based rendering techniques , the time required in rendering an image increases with the geometric complexity of the scene 与传统基于几何造型的绘制技术相比较，它具有造型简单、成象复杂度与场景复杂度无关、真实感强等许多优点。
A solution that java3d constructs gridding model ’ s display on the client side and the server side realizes geometric modeling function ground on acis is proposed 本文提出了一种由java3d构建客户端网格模型显示,服务器基于acis实现几何造型功能的解决方案。
The purpose of the research is to create a new model from existing geometric models with their characteristics . the existing mesh fusion methods have two disadvantages 它的目的是在基于多边形网格的几何造型的框架下，用已有的物体模型构造出兼有它们特点的新模型。
At last , the t - b zier curves and t - b - spline curves can be converted to rational curves so easily that they can be merged into current geometry modeling rapidly 最后由于这两类曲线仅由三角函数构成，所以它们较易转化为有理多项式曲线。从而融入到现有的几何造型系统中。
